Note: The Performance Chart Overview for disk performance on NFS storage is not supported on vSphere 4.0.
In VMware vCenter 4.1 Update 2 and 5.0 Update 1 and above the issue is resolved by the addition of two charts for virtual machines on NFS storage. These charts are labeled Virtual Disk Rate and Virtual Disk Requests.
For more information, see the Resolved Issues section in:
If you cannot upgrade, migrate the virtual machine to a supported platform (such as iSCSI or Fibre Channel). For more information, see the
vSphere Resource Management Guide.
Note: If the problem still exists after trying the steps in this article, file a support request with VMware Support and note this Knowledge Base article ID (1019105) in the problem description. For more information, see
How to Submit a Support Request.