SCOM 2007 R2 - SAN Logical disks disappear after reboot
Hello, I have a 2 node Cluster of Windows Server 2008 R2. It's a File Cluster. My ressource contains SAN disks. I have the folloging issues: After a reboot, in the Health Explorer, the disk disappeared from the node they're belong and won't show up on the other node After a migration, in the Health Explorer, the disk disappeared from the node they're belong and won't show up on the other node I have to flush the health state datastore and restart the agent in order to solve these issues. I did not see any errors relative to the issues neither on the RMS nor the cluster nodes. Searches on the web where helpless (I guess I did not ask the good request ). Right now I have forced the discovery of 2008 Logical Disk to run every 300 seconds instead of 86460. Regards
February 22nd, 2011 4:54am

When I forced the discovery all the disks shows up again. I did not have the same behaviour on Windows Server 2003 cluster. The disk did not disappear when a ressource goes offline. Maybe the solution would be to discover the SAN logical disk on Ressource rather than Windows computers.
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February 22nd, 2011 5:19am

SCOM 2007 R2 CU3 Didn't see anything related in the CU4 The SAN Disk where rediscovered 24h later = discovery interval. I think the discovery ran after the reboot but the disk where not presented to the Server, so that the discovery could not discover them. Regards
February 24th, 2011 9:35am

Are the disks actually shown on the Windows server each time after a restart? Microsoft introduced 'SAN Policy' in Win 2008 (Enterprise and Datacenter Edition only) which causes SAN disks to not be available on startup by default, as a protection mechanism. You have to use the Diskpart.exe utility to set the policy of the disks on that server to make them come up after a restart. More info on similar sort of thing here.
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February 24th, 2011 1:56pm

Thanks for the answer. but even if it as similarities, it doesn't fit here. My initial message lacks informations. My cluster node are physical servers We use Veritas Storage Foundation as SAN layer. My SAN disk are mounted at startup. Previously my cluster was a 2003 cluster with the Veritas storage foundation layer and there was no problem.
February 28th, 2011 7:04am

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