vSAN Performance Graphs in the vSphere Web Client Part 1
Article ID: 326953
Updated On:
Products
VMware vSAN
Issue/Introduction
This article explains vSAN Performance Graphs, available in vSAN (formerly known as Virtual SAN) 6.2 and later.
For Remote VM graphs in vSAN 7.0 U1 and later, see: vSAN Performance Graphs in the vSphere Web Client Part 2
For RDT network graphs in vSAN 8.0 U1 and later, see: vSAN Performance Graphs in the vSphere Web Client Part 3.
For Remote VM graphs in vSAN 7.0 U1 and later, see: vSAN Performance Graphs in the vSphere Web Client Part 2
For RDT network graphs in vSAN 8.0 U1 and later, see: vSAN Performance Graphs in the vSphere Web Client Part 3.
Environment
VMware vSAN 6.2.x
VMware vSAN 6.6.x
VMware vSAN 7.0.x
VMware vSAN 6.5.x
VMware vSAN 6.6.x
VMware vSAN 7.0.x
VMware vSAN 6.5.x
Resolution
To get vSAN performance graphs/charts, first you need to enable the vSAN performance service.
You can view performance changes from different levels of entities (clusters, hosts, disk groups, physical disks, virtual machines and virtual disks) and different standpoints (Virtual Machine consumption, vSAN backend).
There are multiple graphs you can monitor to understand vSAN performance. Here are the details of all available vSAN performance graphs.
Notes:
* denotes vSAN 6.6 and later only.
** denotes vSAN 7.0 and later only.
- Cluster performance
- Host Performance
- vSAN Disk Group Performance
- vSAN iSCSI Target Performance *
- vSAN Physical Disks Performance
- Virtual Machine Performance
- Virtual Disk Performance
- IOInsight Performance ** (Note: These IOInsight graphs are available in vSAN 7.0 U1 and later)
Cluster performance
Virtual Machine Consumption graphs
These graphs show metrics about clusters in the perspective of VM consumption.
IOPS
This graph shows iOPS consumed by all vSAN clients in the cluster, such as virtual machines, stats object, etc.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read IOPS | Read IOPS consumed by all vSAN clients in the cluster, such as virtual machines, stats object, etc. | iopsRead | cluster-domclient |
| Write IOPS | Write IOPS consumed by all vSAN clients in the cluster, such as virtual machines, stats object, etc. | iopsWrite | cluster-domclient |
Throughput
This graph shows throughput consumed by all vSAN clients in the cluster, such as virtual machines, stats object, etc.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Throughput | Read Throughput consumed by all vSAN clients in the cluster, such as virtual machines, stats object, etc. | throughputRead | cluster-domclient |
| Write Throughput | Write Throughput consumed by all vSAN clients in the cluster, such as virtual machines, stats object, etc. | throughputWrite | cluster-domclient |
Latency
This graph shows average latency of IOs generated by all vSAN clients in the cluster, such as virtual machines, stats object, etc.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Latency | Average read latency of IOs generated by all vSAN clients in the cluster, such as virtual machines, stats object, etc. | latencyAvgRead | cluster-domclient |
| Write Latency | Average write latency of IOs generated by all vSAN clients in the cluster, such as virtual machines, stats object, etc. | latencyAvgWrite | cluster-domclient |
Congestions
This graph shows congestions of IOs generated by all vSAN clients in the cluster, such as virtual machines, stats object, etc.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Congestions | Congestions of IOs generated by all vSAN clients in the cluster, such as virtual machines, stats object, etc. | congestion | cluster-domclient |
Outstanding IO
This graph shows outstanding IO from all vSAN clients in the cluster, such as virtual machines, stats object, etc.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Outstanding IO | Outstanding IO from all vSAN clients in the cluster, such as virtual machines, stats object, etc. | oio | cluster-domclient |
vSAN Backend graphs
These graphs show metrics about clusters in the perspective of vSAN backend.
IOPS
This graph shows vSAN cluster backend IOPS.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read IOPS | vSAN cluster read IOPS in the perspective of vSAN backend. | iopsRead | cluster-domcompmgr |
| Resync Read IOPS | vSAN cluster read IOPS of resync traffic, including policy change, repair, maintenance mode / evacuation and rebalance from resyncing objects in the perspective of vSAN backend. | iopsResyncRead | cluster-domcompmgr |
| Write IOPS | vSAN cluster write IOPS in the perspective of vSAN backend. | iopsWrite | cluster-domcompmgr |
| Recovery Write IOPS | vSAN cluster recovery write IOPS in the perspective of vSAN backend. | iopsRecWrite | cluster-domcompmgr |
Throughput
This graph shows vSAN cluster backend throughput.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Throughput | vSAN cluster read throughput in the perspective of vSAN backend. | throughputRead | cluster-domcompmgr |
| Resync Read Throughput | vSAN cluster read throughput of resync traffic, including policy change, repair, maintenance mode / evacuation and rebalance from resyncing objects in the perspective of vSAN backend. | tputResyncRead | cluster-domcompmgr |
| Write Throughput | vSAN cluster write throughput in the perspective of vSAN backend. | throughputWrite | cluster-domcompmgr |
| Recovery Write Throughput | vSAN cluster recovery write throughput in the perspective of vSAN backend. | throughputRecWrite | cluster-domcompmgr |
Latency
This graph shows vSAN cluster backend latency.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Latency | vSAN cluster average read latency in the perspective of vSAN backend. | latencyAvgRead | cluster-domcompmgr |
| Resync Read Latency | vSAN cluster read average latency of resync traffic, including policy change, repair, maintenance mode / evacuation and rebalance from resyncing objects in the perspective of vSAN backend. | latAvgResyncRead | cluster-domcompmgr |
| Write Latency | vSAN cluster average write latency in the perspective of vSAN backend. | latencyAvgWrite | cluster-domcompmgr |
| Recovery Write Latency | vSAN cluster recovery write average latency in the perspective of vSAN backend. | latencyAvgRecWrite | cluster-domcompmgr |
Congestions
This graph shows vSAN cluster backend congestions.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Congestions | vSAN cluster congestions in the perspective of vSAN backend. | congestion | cluster-domcompmgr |
Outstanding IO
This graph shows vSAN cluster backend outstanding IO.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Outstanding IO | vSAN cluster outstanding IO in the perspective of vSAN backend. | oio | cluster-domcompmgr |
IOPS
This graph shows iOPS consumed by
| Metrics | Metrics Descriptions | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| IOPS for read operations | Read IOPS consumed by all clients that mount the file share | readOpTotal | vsan-file-service |
| IOPS for write operations | Read IOPS consumed by all clients that mount the file share | writeOpTotal | vsan-file-service |
Throughput
This graph shows throughput consumed by
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Requested bytes for read | Read Throughput requested by all clients that mount the file share | readRequested | vsan-file-service |
| Actual transferred bytes for read | Read Throughput actual transferred from the file share to all clients | readTransferred | vsan-file-service |
| Requested bytes for write | Write Throughput requested by all clients that mount the file share | writeRequested | vsan-file-service |
| Actual transferred bytes for write | Write Throughput actual transferred and written to the file share | writeTransferred | vsan-file-service |
Latency
This graph shows average latency of IOs generated by
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Latency | Average latency of read IOs generated by all clients that mount the file share | readLatency | vsan-file-service |
| Write Latency | Average latency of write IOs generated by all clients that mount the file share | writeLatency | vsan-file-service |
File Share Status graphs **
These graphs show metrics about vSAN file services per file share. NFS/SMB performance indicates the aggregation of the performance statistics from vSAN file service with the corresponding protocol. Turning on the file system performance allows you to identify performance breakdown at file system layer and protocol stack.
IOPS
This graph shows iOPS consumed by
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| IOPS for read operations | Read IOPS consumed by all clients that mount the file share. | readOpTotal | vsan-file-service |
| IOPS for write operations | Write IOPS consumed by all clients that mount the file share. | writeOpTotal | vsan-file-service |
Throughput
This graph shows throughput consumed by
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Requested bytes for read | Read Throughput requested by all clients that mount the file share. | readRequested | vsan-file-service |
| Actual transferred bytes for read | Read Throughput actual transferred from the file share to all clients. | readTransferred | vsan-file-service |
| Requested bytes for write | Write Throughput requested by all clients that mount the file share. | writeRequested | vsan-file-service |
| Actual transferred bytes for write | Write Throughput actual transferred and written to the file share. | writeTransferred | vsan-file-service |
Latency
This graph shows average latency of IOs generated by
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Latency | Average latency of read IOs generated by all clients that mount the file share. | readLatency | vsan-file-service |
| Write Latency | Average latency of write IOs generated by all clients that mount the file share. | writeLatency | vsan-file-service |
Virtual Machine Consumption graphs
These graphs show metrics about hosts in the perspective of VM consumption.
IOPS
This graph shows iOPS consumed by all vSAN clients in the host, such as virtual machines, stats object, etc.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read IOPS | Read IOPS consumed by all vSAN clients in the host, such as virtual machines, stats object, etc. | iopsRead | host-domclient |
| Write IOPS | Write IOPS consumed by all vSAN clients in the host, such as virtual machines, stats object, etc. | iopsWrite | host-domclient |
| Unmap IOPS | vSAN host IOPS of trim/unmap commands consumed by all vSAN clients in the host, such as virtual machines, stats object, etc. | iopsUnmap | host-domclient |
Throughput
This graph shows throughput consumed by all vSAN clients in the host, such as virtual machines, stats object, etc.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Throughput | Read Throughput consumed by all vSAN clients in the host, such as virtual machines, stats object, etc. | throughputRead | host-domclient |
| Write Throughput | Write Throughput consumed by all vSAN clients in the host, such as virtual machines, stats object, etc. | throughputWrite | host-domclient |
Trim/Unmap Throughput
This graph shows trim/unmap throughput consumed by all vSAN clients in the host, such as virtual machines, stats object, etc.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Unmap Throughput | vSAN host throughput of trim/unmap commands consumed by all vSAN clients in the host, such as virtual machines, stats object, etc. | throughputUnmap | host-domclient |
Latency
This graph shows average latency of IOs generated by all vSAN clients in the host, such as virtual machines, stats object, etc.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Latency | Average read latency of IOs generated by all vSAN clients in the host, such as virtual machines, stats object, etc. | latencyAvgRead | host-domclient |
| Write Latency | Average write latency of IOs generated by all vSAN clients in the host, such as virtual machines, stats object, etc. | latencyAvgWrite | host-domclient |
| Unmap Latency | vSAN host average latency of trim/unmap commands generated by all vSAN clients in the host, such as virtual machines, stats object, etc. | latencyAvgUnmap | host-domclient |
Local Client Cache Hit IOPS
This graph shows average local client cache read IOPS.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Local Client Cache Hit IOPS | Average local client cache read IOPS. | clientCacheHits | host-domclient |
Local Client Cache Hit Rate
This graph shows percentage of read IOs which could be satisfied by the local client cache.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Local Client Cache Hit Rate | Percentage of read IOs which could be satisfied by the local client cache. | clientCacheHitRate | host-domclient |
Congestions
This graph shows congestions of IOs generated by all vSAN clients in the host, such as virtual machines, stats object, etc.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Congestions | Congestions of IOs generated by all vSAN clients in the host, such as virtual machines, stats object, etc. | congestion | host-domclient |
Outstanding IO
This graph shows outstanding IO from all vSAN clients in the host, such as virtual machines, stats object, etc.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Outstanding IO | Outstanding IO from all vSAN clients in the host, such as virtual machines, stats object, etc. | oio | host-domclient |
vSAN Backend graphs
These graphs show metrics about hosts in the perspective of vSAN backend.
IOPS
This graph shows vSAN Backend Host IOPS.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read IOPS | vSAN host read IOPS in the perspective of vSAN backend. | iopsRead | host-domcompmgr |
| Write IOPS | vSAN host write IOPS in the perspective of vSAN backend. | iopsWrite | host-domcompmgr |
| Resync Read IOPS | vSAN host read IOPS of resync traffic, including policy change, repair, maintenance mode / evacuation and rebalance from resyncing objects in the perspective of vSAN backend. | iopsResyncRead | host-domcompmgr |
| Recovery Write IOPS | vSAN host recovery write IOPS in the perspective of vSAN backend. | iopsRecWrite | host-domcompmgr |
| Unmap IOPS | IOPS of trim/unmap command going to disk groups on this host. | iopsUnmap | host-domcompmgr |
| Recovery Unmap IOPS | IOPS of Recovery trim/unmap command going to disk groups on this host. | iopsRecUnmap | host-domcompmgr |
Throughput
This graph shows vSAN Backend Host Throughput.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Throughput | vSAN host read throughput in the perspective of vSAN backend. | throughputRead | host-domcompmgr |
| Write Throughput | vSAN host write throughput in the perspective of vSAN backend. | throughputWrite | host-domcompmgr |
| Resync Read Throughput | vSAN host read throughput of resync traffic, including policy change, repair, maintenance mode / evacuation and rebalance from resyncing objects in the perspective of vSAN backend. | tputResyncRead | host-domcompmgr |
| Recovery Write Throughput | vSAN host recovery write throughput in the perspective of vSAN backend. | throughputRecWrite | host-domcompmgr |
Trim/Unmap Throughput
This graph shows trim/Unmap Throughput going to disk groups on this host.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Unmap Throughput | Total trim/unmap throughput going to disk groups on this host. | throughputUnmap | host-domcompmgr |
| Recovery Unmap Throughput | Total recovery trim/unmap throughput going to disk groups on this host. | throughputRecUnmap | host-domcompmgr |
Latency
This graph shows vSAN Backend Host Latency.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Latency | vSAN host read IO average latency in the perspective of vSAN backend. | latencyAvgRead | host-domcompmgr |
| Write Latency | vSAN host write IO average latency in the perspective of vSAN backend. | latencyAvgWrite | host-domcompmgr |
| Resync Read Latency | vSAN host read average latency of resync traffic, including policy change, repair, maintenance mode / evacuation and rebalance from resyncing objects in the perspective of vSAN backend. | latAvgResyncRead | host-domcompmgr |
| Recovery Write Latency | vSAN host recovery write IO average latency in the perspective of vSAN backend. | latencyAvgRecWrite | host-domcompmgr |
| Unmap Latency | Average trim/unmap latency going to disk groups on this host. | latencyAvgUnmap | host-domcompmgr |
| Recovery Unmap Latency | Average trim/unmap latency going to disk groups on this host. | latencyAvgRecUnmap | host-domcompmgr |
Congestions
This graph shows vSAN Backend Host Congestions.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Congestions | vSAN host Congestions in the perspective of vSAN backend. | congestion | host-domcompmgr |
Outstanding IO
This graph shows vSAN Backend Host Outstanding IO.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Outstanding IO | vSAN host Outstanding IO in the perspective of vSAN backend. | oio | host-domcompmgr |
Network Consumption graphs *
Physical NIC network status graphs
These graphs show metrics for vSAN physical NIC.
pNIC Throughput
This graph shows physical NIC Network I/O Throughput.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| pNIC Throughput Inbound | Physical NIC Throughput Inbound. | rxThroughput | vsan-pnic-net |
| pNIC Throughput Outbound | Physical NIC Throughput Outbound. | txThroughput | vsan-pnic-net |
pNIC Packets Per Second
This graph shows physical NIC Packets Per Second.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| pNIC Inbound Packets Per Second | Physical NIC Inbound Packets Per Second. | rxPackets | vsan-pnic-net |
| pNIC Outbound Packets Per Second | Physical NIC Outbound Packets Per Second. | txPackets | vsan-pnic-net |
pNIC Packet Error Rate
This graph shows percentage of Physical NIC Packet Error Rate.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| pNIC Inbound Packet Error Rate | Percentage of Physical NIC Inbound Packet Error Rate. | rxPacketsLossRate | vsan-pnic-net |
| pNIC Outbound Packet Error Rate | Percentage of Physical NIC Outbound Packet Error Rate. | txPacketsLossRate | vsan-pnic-net |
pNIC vSwitch Port Drop Rate
This graph shows percentage of Physical NIC vSwitch Port Drop Rate.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Inbound Packet Drop Rate of pNic vSwitch Port | Percentage of Physical NIC Inbound vSwitch Port Drop Rate. | portRxDrops | vsan-pnic-net |
| Outbound Packet Drop Rate of pNic vSwitch Port | Percentage of Physical NIC Outbound vSwitch Port Drop Rate. | portTxDrops | vsan-pnic-net |
pNIC Flow Control
This graph shows percentage of Physical NIC 802.3x Pause Rate.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| pNic 802.3x Pause Rate | Percentage of Physical NIC 802.3x Pause Rate. | pauseCount | vsan-pnic-net |
VMKernel Network Adapter status graphs
These graphs show metrics for vSAN VMkernel Network Adapter.
VMkernel Network Adapter Throughput
This graph shows vMkernel Network Adapter Network I/O Throughput.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Throughput Inbound | VMkernel Network Adapter Throughput Inbound. | rxThroughput | vsan-vnic-net |
| Throughput Outbound | VMkernel Network Adapter Throughput Outbound. | txThroughput | vsan-vnic-net |
VMkernel Network Adapter Packets Per Second
This graph shows vMkernel Network Adapter Packets Per Second.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Inbound Packets Per Second | VMkernel Network Adapter Inbound Packets Per Second. | rxPackets | vsan-vnic-net |
| Outbound Packets Per Second | VMkernel Network Adapter Outbound Packets Per Second. | txPackets | vsan-vnic-net |
VMkernel Network Adapter Packet Discard Rate
This graph shows percentage of VMkernel Network Adapter Packet Discard Rate.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Inbound Packet Discard Rate | Percentage of VMkernel Network Adapter Inbound Packet Discard Rate. | rxPacketsLossRate | vsan-vnic-net |
| Outbound Packet Discard Rate | Percentage of VMkernel Network Adapter Outbound Packet Discard Rate. | txPacketsLossRate | vsan-vnic-net |
VMkernel Network vSwitch Port Drop Rate
This graph shows percentage of VMkernel Network vSwitch Port Drop Rate.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Inbound Packet Drop Rate of vSwitch Port | Percentage of VMkernel Network vSwitch Port Inbound Packet Drop Rate. | portRxDrops | vsan-vnic-net |
| Outbound Packet Drop Rate of vSwitch Port | Percentage of VMkernel Network vSwitch Port Outbound Packet Drop Rate. | portTxDrops | vsan-vnic-net |
vSAN Host Network status graphs
These graphs show metrics for vSAN Host Network.
vSAN Host Network I/O Throughput
This graph shows host Network I/O Throughput of All VMkernel Network Adapters Enabled vSAN Traffic.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Network Inbound Throughput | Host Throughput Inbound of All VMkernel Network Adapters Enabled vSAN Traffic. | rxThroughput | vsan-host-net |
| Network Outbound Throughput | Host Throughput Outbound of All VMkernel Network Adapters Enabled vSAN Traffic. | txThroughput | vsan-host-net |
vSAN Host Packets Per Second
This graph shows vSAN Host Packets Per Second of All VMkernel Network Adapters Enabled vSAN Traffic.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Network Inbound Packets Per Second | Host Network Inbound Packets Per Second of All VMkernel Network Adapters Enabled vSAN Traffic. | rxPackets | vsan-host-net |
| Network Outbound Packets Per Second | Host Network Outbound Packets Per Second of All VMkernel Network Adapters Enabled vSAN Traffic. | txPackets | vsan-host-net |
vSAN Host Packet Discard Rate
This graph shows percentage of Host Packet Discard Rate of All VMkernel Network Adapters Enabled vSAN Traffic.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Network Inbound Packet Discard Rate | Percentage of Host Inbound Packet Discard Rate of All VMkernel Network Adapters Enabled vSAN Traffic. | rxPacketsLossRate | vsan-host-net |
| Network Outbound Packet Discard Rate | Percentage of Host Outbound Packet Discard Rate of All VMkernel Network Adapters Enabled vSAN Traffic. | txPacketsLossRate | vsan-host-net |
vSAN Host Port Drop Rate
This graph shows percentage of vSAN Host Port Drop Rate of All vSAN VMkernel Network vSwitch Ports.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Inbound Packet Drop Rate of vSAN Host Port | Percentage of vSAN Host Port Inbound Packet Drop Rate. | portRxDrops | vsan-host-net |
| Outbound Packet Drop Rate of vSAN Host Port | Percentage of vSAN Host Port Outbound Packet Drop Rate. | portTxDrops | vsan-host-net |
vSAN Host TCP Packet Retransmission and Loss Rate
This graph shows percentage of Host TCP Packet Retransmission and Loss Rate of All vSAN Traffic.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| TCP Outbound Retransmission Rate | Percentage of Host TCP Outbound Retransmission Rate of All vSAN Traffic. | tcpTxRexmitRate | vsan-host-net |
| TCP Inbound Loss Rate | Percentage of Host TCP Inbound Loss Rate of All vSAN Traffic. | tcpRxErrRate | vsan-host-net |
vSAN Disk Group Performance
Disk Group graphs
These graphs show metrics about disk groups.
Frontend(Guest) IOPS
This graph shows vSAN disk group (cache tier disk) frontend(guest) IOPS.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Frontend Read IOPS | vSAN disk group (cache tier disk) frontend read IOPS including RC read misses. | iopsRead | disk-group |
| Frontend Write IOPS | vSAN disk group (cache tier disk) frontend write IOPS. | iopsWrite | disk-group |
| Read Cache Read IOPS | vSAN disk group (cache tier disk) Read Cache read IOPS. | iopsRcRead | disk-group |
| Write Buffer Write IOPS | vSAN disk group (cache tier disk) Write Buffer write IOPS. | iopsWbWrite | disk-group |
Frontend(Guest) Throughput
This graph shows vSAN disk group (cache tier disk) frontend(guest) Throughput.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Frontend Read Throughput | vSAN disk group (cache tier disk) frontend read throughput. | throughputRead | disk-group |
| Frontend Write Throughput | vSAN disk group (cache tier disk) frontend write throughput. | throughputWrite | disk-group |
Frontend(Guest) Latency
This graph shows vSAN disk group (cache tier disk) frontend(guest) latency.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Frontend Read Latency | vSAN disk group (cache tier disk) frontend read latency. | latencyAvgRead | disk-group |
| Frontend Write Latency | vSAN disk group (cache tier disk) frontend write latency. | latencyAvgWrite | disk-group |
| Read Cache Read Latency | vSAN disk group (cache tier disk) Read Cache read latency. | latencyRcRead | disk-group |
| Write Buffer Write Latency | vSAN disk group (cache tier disk) Write Buffer write latency. | latencyWbWrite | disk-group |
Overhead IOPS
This graph shows vSAN disk group (cache tier disk) overhead IOPS.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Cache Write IOPS | vSAN disk group (cache tier disk) Read Cache write IOPS. | iopsRcWrite | disk-group |
| Write Buffer Read IOPS | vSAN disk group (cache tier disk) Write Buffer read IOPS. | iopsWbRead | disk-group |
Overhead IO Latency
This graph shows vSAN disk group (cache tier disk) overhead IO latency.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Cache Write Latency | vSAN disk group (cache tier disk) Read Cache write latency. | latencyRcWrite | disk-group |
| Write Buffer Read Latency | vSAN disk group (cache tier disk) Write Buffer read latency. | latencyWbRead | disk-group |
Read Cache Hit Rate
This graph shows vSAN disk group (cache tier disk) Read Cache Hit Rate.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Cache Hit Rate | vSAN disk group (cache tier disk) Read Cache Hit Rate. | rcHitRate | disk-group |
Evictions
This graph shows vSAN disk group (cache tier disk) evictions.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Cache Invalidations | Cache lines invalidated due to overwrites. | warEvictions | disk-group |
| Evictions | Evictions due to Read Cache contention. | quotaEvictions | disk-group |
Write Buffer Free Percentage
This graph shows vSAN disk group (cache tier disk) Write Buffer free percentage.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Write Buffer Free Percentage | vSAN disk group (cache tier disk) Write Buffer free percentage. | wbFreePct | disk-group |
Capacity and Usage
This graph shows vSAN disk group capacity and usage.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Capacity | vSAN disk group capacity. | capacity | disk-group |
| Used Capacity | vSAN disk group used capacity. | capacityUsed | disk-group |
| Reserved Capacity | vSAN disk group reserved capacity. | capacityReserved | disk-group |
| Read Cache Size | vSAN disk group Read Cache size. | rcSize | disk-group |
| Write Buffer Size | vSAN disk group Write Buffer size. | wbSize | disk-group |
Cache Disk De-stage Rate
This graph shows the throughput of the data de-staging from the cache disk to capacity disks.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Bytes De-stage from SSD | The throughput of the SSD bytes de-staged from the cache disk to capacity disks. | ssdBytesDrained | disk-group |
| Zero-Bytes De-stage | The throughput of the zero-bytes de-staged to capacity disks. | zeroBytesDrained | disk-group |
Congestions
This graph shows vSAN disk group congestions.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Mem-Congestion | vSAN disk group Mem-congestions. | memCongestion | disk-group |
| Slab-Congestion | vSAN disk group Slab-congestions. | slabCongestion | disk-group |
| SSD-Congestion | vSAN disk group SSD-congestions. | ssdCongestion | disk-group |
| IOPS-Congestion | vSAN disk group IOPS-congestions. | iopsCongestion | disk-group |
| Log-Congestion | vSAN disk group Log-congestions. | logCongestion | disk-group |
| Comp-Congestion | vSAN disk group Comp-congestion. | compCongestion | disk-group |
Bandwidth available under log congestion.
This graph shows bandwidth sustainable by destaging rate when the log build up is beyond the high watermark. Log buildup is limited to bound memory use and mount time. 4k block size IO has the highest log build up. Once log build up crosses the high watermark we limit the bandwidth to what can be supported by the current destaging rate.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| LogCongestionTput | Bandwidth sustainable by the current destaging rate, because the log buildup is beyond the high watermark. | bytesPerSecondBandwidth | disk-group |
Outstanding IO
This graph shows the outstanding write IO of disk groups.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Outstanding Write OPs | The number of outstanding write operations of the disk group. | oioWrite | disk-group |
| Outstanding Recovery Write OPs | The number of outstanding recovery write operations of the disk group. | oioRecWrite | disk-group |
Outstanding IO Size
This graph shows the outstanding write IO size of disk groups.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Outstanding Write IO Size | The size of outstanding write IO of the disk group. | oioWriteSize | disk-group |
| Outstanding Recovery Write IO Size | The size of outstanding recovery write IO of the disk group. | oioRecWriteSize | disk-group |
Delayed IO Percentage
This graph shows the percentage of IOs which go though vSAN internal queues.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Delayed IO Percentage | The percentage of IOs which go though vSAN internal queues. | iopsDelayPctSched | disk-group |
Delayed IO Average Latency
This graph shows the average latency of IOs which go though vSAN internal queues.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Delayed IO Average Latency | The average latency of total IOs which go though vSAN internal queues. | latencyDelaySched | disk-group |
| Latency of Namespace Queue | The Latency of the namespace IO queue in the vSAN internal scheduler. | latencySchedQueueNS | disk-group |
| Latency of Recovery Queue | The Latency of the recovery IO queue in the vSAN internal scheduler. | latencySchedQueueRec | disk-group |
| Latency of VM Queue | The Latency of the VM IO queue in the vSAN internal scheduler. | latencySchedQueueVM | disk-group |
| Latency of Meta Queue | The Latency of the meta IO queue in the vSAN internal scheduler. | latencySchedQueueMeta | disk-group |
Delayed IOPS
This graph shows the IOPS of delayed IOs which go through vSAN internal queues.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Total Delayed IOPS | The IOPS of total IOs which go through vSAN internal queues. | iopsSched | disk-group |
| IOPS of Namespace Queue | The IOPS of the namespace IO queue in the vSAN internal scheduler. | iopsSchedQueueNS | disk-group |
| IOPS of Recovery Queue | The IOPS of the recovery IO queue in the vSAN internal scheduler. | iopsSchedQueueRec | disk-group |
| IOPS of VM Queue | The IOPS of the VM IO queue in the vSAN internal scheduler. | iopsSchedQueueVM | disk-group |
| IOPS of Meta Queue | The IOPS of the meta IO queue in the vSAN internal scheduler. | iopsSchedQueueMeta | disk-group |
Delayed IO Throughput
This graph shows the throughput of delayed IOs which go through vSAN internal queues.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Total Queue Throughput | The throughput of total delayed IO in the vSAN internal scheduler. | throughputSched | disk-group |
| Throughput of Namespace Queue | The throughput of the namespace IO queue in the vSAN internal scheduler. | throughputSchedQueueNS | disk-group |
| Throughput of Recovery Queue | The throughput of the recovery IO queue in the vSAN internal scheduler. | throughputSchedQueueRec | disk-group |
| Throughput of VM Queue | The throughput of the VM IO queue in the vSAN internal scheduler. | throughputSchedQueueVM | disk-group |
| Throughput of Meta Queue | The throughput of the meta IO queue in the vSAN internal scheduler. | throughputSchedQueueMeta | disk-group |
vSAN Disk Group performance graphs *
Resync IOPS
This graph shows vSAN disk group level IOPS of resync traffic, including policy change, repair, maintenance mode / evacuation and rebalance from resyncing objects.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Policy Change Read | vSAN disk group level read IOPS for resync traffic caused by change of policy. | iopsResyncReadPolicy | disk-group |
| Evacuation Read | vSAN disk group level read IOPS for resync traffic caused by maintenance mode and object evacuation. | iopsResyncReadDecom | disk-group |
| Rebalance Read | vSAN disk group level read IOPS for resync traffic caused by rebalancing objects. | iopsResyncReadRebalance | disk-group |
| Repair Read | vSAN disk group level read IOPS for resync traffic caused by object repair. | iopsResyncReadFixComp | disk-group |
| Policy Change Write | vSAN disk group level write IOPS for resync traffic caused by change of policy. | iopsResyncWritePolicy | disk-group |
| Evacuation Write | vSAN disk group level write IOPS for resync traffic caused by maintenance mode and object evacuation. | iopsResyncWriteDecom | disk-group |
| Rebalance Write | vSAN disk group level write IOPS for resync traffic caused by rebalancing objects. | iopsResyncWriteRebalance | disk-group |
| Repair Write | vSAN disk group level write IOPS for resync traffic caused by object repair. | iopsResyncWriteFixComp | disk-group |
Resync Throughput
This graph shows vSAN disk group level throughput of resync traffic, including policy change, repair, maintenance mode / evacuation and rebalance from resyncing objects.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Policy Change Read | vSAN disk group level read throughput for resync traffic caused by change of policy. | tputResyncReadPolicy | disk-group |
| Evacuation Read | vSAN disk group level read throughput for resync traffic caused by maintenance mode and object evacuation. | tputResyncReadDecom | disk-group |
| Rebalance Read | vSAN disk group level read throughput for resync traffic caused by rebalancing objects. | tputResyncReadRebalance | disk-group |
| Repair Read | vSAN disk group level read throughput for resync traffic caused by object repair. | tputResyncReadFixComp | disk-group |
| Policy Change Write | vSAN disk group level write throughput for resync traffic caused by change of policy. | tputResyncWritePolicy | disk-group |
| Evacuation Write | vSAN disk group level write throughput for resync traffic caused by maintenance mode and object evacuation. | tputResyncWriteDecom | disk-group |
| Rebalance Write | vSAN disk group level write throughput for resync traffic caused by rebalancing objects. | tputResyncWriteRebalance | disk-group |
| Repair Write | vSAN disk group level write throughput for resync traffic caused by object repair. | tputResyncWriteFixComp | disk-group |
Resync Latency
This graph shows vSAN disk group level average latency of resync traffic, including policy change, repair, maintenance mode / evacuation and rebalance from resyncing objects.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Policy Change Read | vSAN disk group level read latency for resync traffic caused by change of policy. | latResyncReadPolicy | disk-group |
| Evacuation Read | vSAN disk group level read latency for resync traffic caused by maintenance mode and object evacuation. | latResyncReadDecom | disk-group |
| Rebalance Read | vSAN disk group level read latency for resync traffic caused by rebalancing objects. | latResyncReadRebalance | disk-group |
| Repair Read | vSAN disk group level read latency for resync traffic caused by object repair. | latResyncReadFixComp | disk-group |
| Policy Change Write | vSAN disk group level write latency for resync traffic caused by change of policy. | latResyncWritePolicy | disk-group |
| Evacuation Write | vSAN disk group level write latency for resync traffic caused by maintenance mode and object evacuation. | latResyncWriteDecom | disk-group |
| Rebalance Write | vSAN disk group level write latency for resync traffic caused by rebalancing objects. | latResyncWriteRebalance | disk-group |
| Repair Write | vSAN disk group level write latency for resync traffic caused by object repair. | latResyncWriteFixComp | disk-group |
vSAN iSCSI Target Performance *
These graphs are all related to vSAN iSCSI service. They are available in vSAN 6.6 and later releases. All iSCSI stats are only valid when the iSCSI service is enabled.
vSAN iSCSI host level graphs *
These graphs show metrics for all vSAN iSCSI targets on this ESXi host.
IOPS
This graph shows iOPS consumed by all vSAN iSCSI targets on this ESXi host.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read IOPS | Read IOPS consumed by all vSAN iSCSI targets on this ESXi host. | iopsRead | vsan-iscsi-host |
| Write IOPS | Write IOPS consumed by all vSAN iSCSI targets on this ESXi host. | iopsWrite | vsan-iscsi-host |
| Total IOPS | Total IOPS consumed by all vSAN iSCSI targets on this ESXi host. | iopsTotal | vsan-iscsi-host |
Bandwidth
This graph shows bandwidth consumed by all vSAN iSCSI targets on this ESXi host.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Bandwidth | Read bandwidth consumed by all vSAN iSCSI targets on this ESXi host. | bandwidthRead | vsan-iscsi-host |
| Write Bandwidth | Write bandwidth consumed by all vSAN iSCSI targets on this ESXi host. | bandwidthWrite | vsan-iscsi-host |
| Total Bandwidth | Total bandwidth consumed by all vSAN iSCSI targets on this ESXi host. | bandwidthTotal | vsan-iscsi-host |
Latency
This graph shows average latency of IOs generated by all vSAN iSCSI targets on this ESXi host.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Latency | Average read latency of IOs generated by all vSAN iSCSI targets on this ESXi host. | latencyRead | vsan-iscsi-host |
| Write Latency | Average write latency of IOs generated by all vSAN iSCSI targets on this ESXi host. | latencyWrite | vsan-iscsi-host |
| Total Latency | Average total latency of IOs generated by all vSAN iSCSI targets on this ESXi host. | latencyTotal | vsan-iscsi-host |
Outstanding IO
This graph shows outstanding IO from all vSAN iSCSI targets on this ESXi host.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Outstanding IO | Outstanding IO from all vSAN iSCSI targets on this ESXi host. | queueDepth | vsan-iscsi-host |
vSAN iSCSI target level graphs *
These graphs show metrics for all LUNs on a vSAN iSCSI target.
IOPS
This graph shows iOPS consumed by all vSAN iSCSI LUNs on this target.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read IOPS | Read IOPS consumed by all vSAN iSCSI LUNs on this target. | iopsRead | vsan-iscsi-target |
| Write IOPS | Write IOPS consumed by all vSAN iSCSI LUNs on this target. | iopsWrite | vsan-iscsi-target |
| Total IOPS | Total IOPS consumed by all vSAN iSCSI LUNs on this target. | iopsTotal | vsan-iscsi-target |
Bandwidth
This graph shows bandwidth consumed by all vSAN iSCSI LUNs on this target.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Bandwidth | Read bandwidth consumed by all vSAN iSCSI LUNs on this target. | bandwidthRead | vsan-iscsi-target |
| Write Bandwidth | Write bandwidth consumed by all vSAN iSCSI LUNs on this target. | bandwidthWrite | vsan-iscsi-target |
| Total Bandwidth | Total bandwidth consumed by all vSAN iSCSI LUNs on this target. | bandwidthTotal | vsan-iscsi-target |
Latency
This graph shows average latency of IOs generated by all vSAN iSCSI LUNs on this target.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Latency | Average read latency of IOs generated by all vSAN iSCSI LUNs on this target. | latencyRead | vsan-iscsi-target |
| Write Latency | Average write latency of IOs generated by all vSAN iSCSI LUNs on this target. | latencyWrite | vsan-iscsi-target |
| Total Latency | Average total latency of IOs generated by all vSAN iSCSI LUNs on this target. | latencyTotal | vsan-iscsi-target |
Outstanding IO
This graph shows outstanding IO from all vSAN iSCSI LUNs on this target.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Outstanding IO | Outstanding IO from all vSAN iSCSI LUNs on this target. | queueDepth | vsan-iscsi-target |
vSAN iSCSI LUN level graphs *
These graphs show metrics for a vSAN iSCSI LUN.
IOPS
This graph shows iOPS consumed by this vSAN iSCSI LUN.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read IOPS | Read IOPS consumed by this vSAN iSCSI LUN. | iopsRead | vsan-iscsi-lun |
| Write IOPS | Write IOPS consumed by this vSAN iSCSI LUN. | iopsWrite | vsan-iscsi-lun |
| Total IOPS | Total IOPS consumed by this vSAN iSCSI LUN. | iopsTotal | vsan-iscsi-lun |
Bandwidth
This graph shows bandwidth consumed by this vSAN iSCSI LUN.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Bandwidth | Read bandwidth consumed by this vSAN iSCSI LUN. | bandwidthRead | vsan-iscsi-lun |
| Write Bandwidth | Write bandwidth consumed by this vSAN iSCSI LUN. | bandwidthWrite | vsan-iscsi-lun |
| Total Bandwidth | Total bandwidth consumed by this vSAN iSCSI LUN. | bandwidthTotal | vsan-iscsi-lun |
Latency
This graph shows average latency of IOs generated by this vSAN iSCSI LUN.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Latency | Average read latency of IOs generated by this vSAN iSCSI LUN. | latencyRead | vsan-iscsi-lun |
| Write Latency | Average write latency of IOs generated by this vSAN iSCSI LUN. | latencyWrite | vsan-iscsi-lun |
| Total Latency | Average total latency of IOs generated by this vSAN iSCSI LUN. | latencyTotal | vsan-iscsi-lun |
Outstanding IO
This graph shows outstanding IO from this vSAN iSCSI LUN.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Outstanding IO | Outstanding IO from this vSAN iSCSI LUN. | queueDepth | vsan-iscsi-lun |
vSAN Physical Disks Performance
Cache-tier Disk graphs
These graphs show metrics about Cache-tier disks.
Physical/Firmware Layer IOPS
This graph shows vSAN cache tier disk physical/firmware layer IOPS.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Physical-layer Read IOPS | vSAN disk physical/firmware layer read IOPS. | iopsDevRead | cache-disk |
| Physical-layer Write IOPS | vSAN disk physical/firmware layer write IOPS. | iopsDevWrite | cache-disk |
Physical/Firmware Layer Throughput
This graph shows vSAN cache tier disk physical/firmware layer throughput.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Physical-layer Read Throughput | vSAN disk physical/firmware layer read throughput. | throughputDevRead | cache-disk |
| Physical-layer Write Throughput | vSAN disk physical/firmware layer write throughput. | throughputDevWrite | cache-disk |
Physical/Firmware Layer Latency
This graph shows vSAN cache tier disk physical/firmware layer latency.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Physical-layer Read Latency | vSAN disk physical/firmware layer read latency. | latencyDevRead | cache-disk |
| Physical-layer Write Latency | vSAN disk physical/firmware layer write latency. | latencyDevWrite | cache-disk |
| Guest Average Latency | vSAN disk Guest IO latency (total latency). | latencyDevGAvg | cache-disk |
| Device Average Latency | vSAN disk IO device latency (from HBA to backend storage). | latencyDevDAvg | cache-disk |
Capacity-tier Disks graphs
These graphs show metrics about Capacity-tier disks.
Physical/Firmware Layer IOPS
This graph shows vSAN capacity tier disk physical/firmware layer IOPS.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Physical-layer Read IOPS | vSAN disk physical/firmware layer read IOPS. | iopsDevRead | capacity-disk |
| Physical-layer Write IOPS | vSAN disk physical/firmware layer write IOPS. | iopsDevWrite | capacity-disk |
Physical/Firmware Layer Throughput
This graph shows vSAN capacity tier disk physical/firmware layer throughput.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Physical-layer Read Throughput | vSAN disk physical/firmware layer read throughput. | throughputDevRead | capacity-disk |
| Physical-layer Write Throughput | vSAN disk physical/firmware layer write throughput. | throughputDevWrite | capacity-disk |
Physical/Firmware Layer Latency
This graph shows vSAN capacity tier disk physical/firmware layer latency.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Physical-layer Read Latency | vSAN disk physical/firmware layer read latency. | latencyDevRead | capacity-disk |
| Physical-layer Write Latency | vSAN disk physical/firmware layer write latency. | latencyDevWrite | capacity-disk |
| Guest Average Latency | vSAN disk Guest IO latency (total latency). | latencyDevGAvg | capacity-disk |
| Device Average Latency | vSAN disk IO device latency (from HBA to backend storage). | latencyDevDAvg | capacity-disk |
vSAN Layer IOPS
This graph shows capacity tier disk vSAN layer IOPS.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| vSAN Layer Read IOPS | Disk vSAN layer read IOPS. | iopsRead | capacity-disk |
| vSAN Layer Write IOPS | Disk vSAN layer write IOPS. | iopsWrite | capacity-disk |
vSAN Layer Latency
This graph shows capacity tier disk vSAN layer latency.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| vSAN Layer Read Latency | Disk vSAN layer read latency. | latencyRead | capacity-disk |
| vSAN Layer Write Latency | Disk vSAN layer write latency. | latencyWrite | capacity-disk |
Virtual Machine Performance
Virtual Machine Consumption graphs
These graphs show metrics for virtual machines.
IOPS
This graph shows virtual machine IOPS.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read IOPS | Virtual machine read IOPS. | iopsRead | virtual-machine |
| Write IOPS | Virtual machine write IOPS. | iopsWrite | virtual-machine |
Throughput
This graph shows virtual machine throughput.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Throughput | Virtual machine read throughput. | throughputRead | virtual-machine |
| Write Throughput | Virtual machine write throughput. | throughputWrite | virtual-machine |
Latency
This graph shows virtual machine latency.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Latency | Virtual machine read latency. | latencyRead | virtual-machine |
| Write Latency | Virtual machine write latency. | latencyWrite | virtual-machine |
Virtual Disk Performance
Virtual Disk graphs
These graphs show metrics for Virtual SCSI of virtual machines.
Virtual SCSI IOPS
This graph shows virtual machine VSCSI IOPS.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read IOPS | Virtual machine VSCSI read IOPS. | iopsRead | vscsi |
| Write IOPS | Virtual machine VSCSI write IOPS. | iopsWrite | vscsi |
Virtual SCSI Throughput
This graph shows virtual machine VSCSI throughput.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Throughput | Virtual machine VSCSI read throughput. | throughputRead | vscsi |
| Write Throughput | Virtual machine VSCSI write throughput. | throughputWrite | vscsi |
Virtual SCSI Latency
This graph shows virtual machine VSCSI latency.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Read Latency | Virtual machine VSCSI read latency. | latencyRead | vscsi |
| Write Latency | Virtual machine VSCSI write latency. | latencyWrite | vscsi |
Virtual Disk IOPS Limit graphs
These graphs show metrics for virtual disks.
IOPS and IOPS Limit
This graph shows normalized IOPS for a virutal disk. If an IOPS limit has been specified in the policy, the graph will also show the limit.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Normalized IOPS Limit | The applied IOPS limit. | iopsLimit | virtual-disk |
| Normalized IOPS | This shows IOPS that are represented using a weighted size of 32KB by default. This means that a 64KB read or write operation represents 2 normalized IO. The weighted size is a configurable parameter. | NIOPS | virtual-disk |
Delayed Normalized IOPS
This graph shows the normalized IOPS for the IOs that are delayed due to the application of the IOPS limit.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
|---|---|---|---|
| Delayed Normalized IOPS | This is the IOPS for normalized IOs that are delayed. | NIOPSDelayed | virtual-disk |
IOInsight graphs**
These graphs show metrics for IOInsight.
IOPS
This graph shows virtual machine VSCSI IOPS.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
| Read IOPS | Virtual machine VSCSI read IOPS | iopsRead | ioinsight |
| Write IOPS | Virtual machine VSCSI write IOPS | iopsWrite | ioinsight |
| Total IOPS | Virtual machine VSCSI total IOPS | iopsTotal | ioinsight |
Throughput
This graph shows virtual machine VSCSI throughput.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
| Read Throughput | Virtual machine VSCSI read throughput | throughputRead | ioinsight |
| Write Throughput | Virtual machine VSCSI write throughput | throughputWrite | ioinsight |
| Total Throughput | Virtual machine VSCSI total throughput | throughputTotal | ioinsight |
Sequential & Random Throughput
This graph shows virtual machine VSCSI throughput.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
| Sequential Throughput | Virtual machine VSCSI Sequential throughput | throughputSequential | ioinsight |
| Random Throughput | Virtual machine VSCSI Random throughput | throughputRandom | ioinsight |
| Total Throughput | Virtual machine VSCSI total throughput | throughputTotal | ioinsight |
Sequential & Random IO Ratio
This graph shows virtual machine sequential & random IO Ratio
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
| Sequential Read IO | Virtual machine VSCSI Sequential read IO ratio | sequentialReadRatio | ioinsight |
| Sequential Write IO | Virtual machine VSCSI Sequential write IO ratio | sequentialWriteRatio | ioinsight |
| Sequential IO | Virtual machine VSCSI Sequential IO ratio | sequentialRatio | ioinsight |
| Random Read IO | Virtual machine VSCSI Random read IO ratio | randomReadRatio | ioinsight |
| Random Write IO | Virtual machine VSCSI Random write IO ratio | randomWriteRatio | ioinsight |
| Random IO | Virtual machine VSCSI Random IO ratio | randomRatio | ioinsight |
4K Aligned & Unaligned IO Ratio
This graph shows virtual machine VSCSI 4K Aligned & Unaligned IO Ratio.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
| 4K Aligned Read IO | Virtual machine VSCSI 4K aligned read IO ratio | aligned4kReadRatio | ioinsight |
| 4K Aligned Write IO | Virtual machine VSCSI 4K aligned write IO ratio | aligned4kWriteRatio | ioinsight |
| 4K Aligned IO | Virtual machine VSCSI 4K aligned IO ratio | aligned4kRatio | ioinsight |
| 4K Unaligned Read IO | Virtual machine VSCSI 4K Unaligned read IO ratio | unaligned4kReadRatio | ioinsight |
| 4K Unaligned Write IO | Virtual machine VSCSI 4K Unaligned write IO ratio | unaligned4kWriteRatio | ioinsight |
| 4K Unaligned IO | Virtual machine VSCSI 4K Unaligned IO ratio | unaligned4kRatio | ioinsight |
IO Ratio
This graph shows virtual machine VSCSI IO ratio.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
| Read IO | Virtual machine VSCSI read IO ratio | readRatio | ioinsight |
| Write IO | Virtual machine VSCSI write IO ratio | writeRatio | ioinsight |
IO Size Distribution
This graph shows virtual machine VSCSI IO Size Distribution.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
| <4KB | Read/Write IO size less than 4K | riosz0_4k/wiosz0_4k | ioinsight-histogram |
| 4KB | Read/Write IO size equals 4K | riosz4k/wiosz4k | ioinsight-histogram |
| 4KB - 8KB | Read/Write IO size greater than 4K and less than 8K | riosz4k_8k/wiosz4k_8k | ioinsight-histogram |
| 8KB | Read/Write IO size equals 8K | riosz8k/wiosz8k | ioinsight-histogram |
| 8KB - 16KB | Read/Write IO size greater than 8K and less than 16K | riosz8k_16k/wiosz8k_16k | ioinsight-histogram |
| 16KB | Read/Write IO size equals 16K | riosz16k/wiosz16k | ioinsight-histogram |
| 16KB - 32KB | Read/Write IO size greater than 16K and less than 32K | riosz16k_32k/wiosz16k_32k | ioinsight-histogram |
| 32KB | Read/Write IO size equals 32K | riosz32k/wiosz32k | ioinsight-histogram |
| 32KB - 64KB | Read/Write IO size greater than 32K and less than 64K | riosz32k_64k/wiosz32k_64k | ioinsight-histogram |
| 64KB | Read/Write IO size equals 64K | riosz64k/wiosz64k | ioinsight-histogram |
| 64KB - 128KB | Read/Write IO size greater than 64K and less than 128K | riosz64k_128k/wiosz64k_128k | ioinsight-histogram |
| 128KB | Read/Write IO size equals 128K | riosz128k/wiosz128k | ioinsight-histogram |
| 128KB - 256KB | Read/Write IO size greater than 128 and less than 256K | riosz128k_256k/wiosz128k_256k | ioinsight-histogram |
| 256KB | Read/Write IO size equals 256K | riosz256k/wiosz256k | ioinsight-histogram |
| 256KB - 512KB | Read/Write IO size greater than 256K and less than 512K | riosz256k_512k/wiosz256k_512k | ioinsight-histogram |
| 512KB | Read/Write IO size equals 512K | riosz512k/wiosz512k | ioinsight-histogram |
| 512KB - 1MB | Read/Write IO size greater than 512K and less than 1M | riosz512k_1m/wiosz512k_1m | ioinsight-histogram |
| 1MB | Read/Write IO size equals 1M | riosz1m/wiosz1m ioinsight | ioinsight-histogram |
| >1MB | Read/Write IO size greater than 1M | riosz1_m/wiosz1_m | ioinsight-histogram |
IO Latency Distribution
This graph shows virtual machine VSCSI IO Latency Distribution.
| Metrics | Metrics Description | Metric ID in API | Corresponding Entity Type |
| <1us | Read/Write IO latency no more than 1 microsecond | rlat0_1us/wlat0_1us | ioinsight-histogram |
| 1us - 10us | Read/Write IO latency greater than 1 and no more than 10 microsecond | rlat1_10us/wlat1_10us | ioinsight-histogram |
| 10us - 100us | Read/Write IO latency greater than 10 and no more than 100 microsecond | rlat10_100us/wlat10_100us | ioinsight-histogram |
| 100us - 500us | Read/Write IO latency greater than 100 and no more than 500 microsecond | rlat100_500us/wlat100_500us | ioinsight-histogram |
| 500us - 1ms | Read/Write IO latency greater than 500 microsecond and no more than 1 millisecond | rlat500us_1ms/wlat500us_1ms | ioinsight-histogram |
| 1ms - 5ms | Read/Write IO latency greater than 1 and no more than 5 millisecond | rlat1_5ms/wlat1_5ms | ioinsight-histogram |
| 5ms - 10ms | Read/Write IO latency greater than 5 and no more than 10 millisecond | rlat5_10ms/wlat5_10ms | ioinsight-histogram |
| 10ms - 25ms | Read/Write IO latency greater than 10 and no more than 25 millisecond | rlat10_25ms/wlat10_25ms | ioinsight-histogram |
| 25ms - 50ms | Read/Write IO latency greater than 25 and no more than 50 millisecond | rlat25_50ms/wlat25_50ms | ioinsight-histogram |
| 50ms - 100ms | Read/Write IO latency greater than 50 and no more than 100 millisecond | rlat50_100ms/wlat50_100ms | ioinsight-histogram |
| >100ms | Read/Write IO latency greater than 100 millisecond | rlat100_ms/wlat100_ms | ioinsight-histogram |
Additional Information
Fore more information on vSAN congestion metrics, see Understanding Congestion in vSAN (2150260).
vSphere Web Client 中的 Virtual SAN 性能图
vSphere Web Client の vSAN パフォーマンス グラフ
Understanding Congestion in vSAN
vSphere Web Client 中的 Virtual SAN 性能图
vSphere Web Client の vSAN パフォーマンス グラフ
Understanding Congestion in vSAN
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