This article explains using tools to determine LUN pathing information for ESXi hosts.

For information troubleshooting LUN connectivity issues, see Troubleshooting LUN connectivity issues on ESXi host

• ESXi command line – use the command line to obtain the multipath information when performing troubleshooting procedures.
• vSphere Client/vSphere Web Client – use this option when you are performing system maintenance.

1. Log in to the ESXi host console.
2. Type esxcli storage core path list to get detailed information regarding the paths.
   
   For example:
   
   fc.5001438005685fb7:5001438005685fb6-fc.5006048c536915af:5006048c536915af-naa.60060480000290301014533030303130
   UID: fc.5001438005685fb7:5001438005685fb6-fc.5006048c536915af:5006048c536915af-naa.60060480000290301014533030303130
   Runtime Name: vmhba1:C0:T0:L0
   Device: naa.60060480000290301014533030303130
   Device Display Name: EMC Fibre Channel Disk (naa.60060480000290301014533030303130)
   Adapter: vmhba1
   Channel: 0
   Target: 0
   LUN: 0
   Plugin: NMP
   State: active
   Transport: fc
   Adapter Identifier: fc.5001438005685fb7:5001438005685fb6
   Target Identifier: fc.5006048c536915af:5006048c536915af
   Adapter Transport Details: WWNN: xx:xx:xx:xx:xx:xx:xx:xx WWPN: xx:xx:xx:xx:xx:xx:xx:xx
   Target Transport Details: WWNN: <WWNN> WWPN: <WWPN>
    
3. Type esxcli storage core path list -d naaID to list the detailed information of the corresponding paths for a specific device.
    
4. The command esxcli storage nmp device list lists the LUN multipathing information:
   
   naa.60060480000290301014533030303130
   Device Display Name: EMC Fibre Channel Disk (naa.60060480000290301014533030303130)
   Storage Array Type: VMW_SATP_SYMM
   Storage Array Type Device Config: SATP VMW_SATP_SYMM does not support device configuration.
   Path Selection Policy: VMW_PSP_FIXED
   Path Selection Policy Device Config: {preferred=vmhba0:C0:T1:L0;current=vmhba0:C0:T1:L0}
   Path Selection Policy Device Custom Config:
   Working Paths: vmhba0:C0:T1:L0
   
   Notes:

• For information on multipathing and path selection options, see  VMware Multipathing policies in ESXi/ESX (1011340) 
• If a Connect to local host failed: Connection failure message is received, the hostd management agent process may not be running, which is required to use esxcli. In this situation, you can use localcli instead of esxcli.
• For more information, see the 7.0 Command Line Reference Guide  

vSphere Client HTML5 and Web Client

To obtain multipath settings for your storage in the HTML5 client:

1. Select an ESXi host, and click in the Configure tab.
2. Click in Storage Devices.
3. Select a the storage device that you want to verify.
4. Scroll down in the Properties tab and click in "Edit multipathing...".