Sunday, July 18, 2010

Disk timeout

One of the items that the VMware Tools installation performs on a Windows VM is the increase of the disk timeout value to 60 seconds. This helps the OS tolerate a storage path failover which is not instant. The registry value is located at:
HKLM\System\CurrentControlSet\Services\Disk\TimeOutValue
The value is set to 60 Decimal/x03c Hex
MSCS installation will change this value to 20
Windows default is 10
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