Wednesday, March 13, 2013

Provisioning: How to avoid failover delay

Note: Installing Provisioning Services affects the following registry key:HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MRXSmb\Parameters\OplocksDisabled. Changing this registry key disables Windows Opportunity Locking, providing the fastest possible failover time when contact with the active Provisioning Server is lost. Without this change, failover times can take up to one minute. During this time, Windows does not allow access to the vDisk file that was in use by the failed Provisioning Server. By disabling Windows Opportunity Locking on Provisioning Servers, the Stream Service can have immediate access to vDisk files. However, this reduces caching of remote vDisk data for the entire Provisioning Server.
OplocksDisabled REG_DWORD 0 or 1
Default: 0 (not disabled)
OplocksDisabled REG_DWORD 0 or 1
Default: 1 (disabled)

No comments:

Post a Comment