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NTFS Corruption

Hi All, I have been battling this issue for some time with little improvement, any and all help would be appreciated. The platform is as follows:
Scale Computing 4 x S2 node iSCSI SAN.
3 HP DL360's for computer hosts.
12 Microsoft Server 2008 R2 VM's.
The setup ran fine from 07/2011 to 02/2012 then the file server started getting Event 55 ( NTFS corrupt, run chkdsk ) errors { This is the only VM that has this issue }, at the time we had all of the shares on 1 large 1.5 TB LUN. Not the most desirable as far as LUN size, but it was an inherited situation. Anyway, it was determined we were running short on SAN space, so a new node with 2 TB usable was added. After some VM and SAN cleanup all seemed well at the end of 02/2012 through 06/2012. Event 55 reappears, we chkdsk everything back to normal, and everything is good until 08/2012. At this point we have been using Windows back to the SAN and then replicating offsite as well as Shadow Copy ( budget  constraints ). We have now changed to StorageCraft s backing up to a physical backup server and still running Shadow Copy. Then a drive fails in the SAN and event 55 is back and has pretty much been an ongoing issue ever since. We have since split the data onto new LUN's of L = 40GB, M = 1.02TB, S = 125GB, T = 100GB, W = 100GB, and Y = 125GB, so other than M, which is still a work in progress, all of the data has been migrated to new reasonably sized LUN's. Have now, via Microsoft Support,  updated ntfs.sys driver and turned off Shadow Copy and Event 55 started on 3 of 6 LUN's, L, S, and W. Ran chkdsk /f and index $0 of file 25 was bad on all 3 LUN's. My next step is to move to a different VM and try moving a LUN to a local host data store.
My thanks in advance to all!!!
1 Solution
What is the RAID configuration, controller model and specific model # of disk drives?
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
any errors in the network switches, have you tried using jumbo frames for iSCSI storage
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