SCSI disk timeout settings required for Guest OS which runs only on VMware ESX NFS Datastores

Netapp has recently published a document which explains how and why to set higher SCSI disk timeout settings

on Vmware Virtual Machines that run on Vmware ESX NFS Datastores.


Symptoms:


During Cluster failover on NetApp FAS storage systems, in order to sustain longer failover time the SCSI disk timeout

needs to be set in the Guest OS which runs on NFS Datastores.


SCSI disk timeout settings required for Guest OS which runs only on VMware ESX NFS Datastores


Solution:


On Windows Guest OS:


* Change the Registry Parameter DiskTimeOutValue in Windows Guest Operating System:


HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Disk\TimeOutValue to 190(Dec).


For the complete document and other operating systems:

Netapp Solution ID: kb37986 (Requires NOW site login)