hi guys
We have 3 X R720 with SAS HBA (dual port) connected to an MD3200 (dual controller). It is setup in duplex mode and so should allow failover between the controllers. However on random occasions and random hosts it disconnects completely and the host has to be rebooted to enable connection to the storage.
All 3 hosts are VMWARE. Last week we migrated everything to a MD1200 (single controller) and for a week no drops.
On the weekend we migrated back to the MD3200 and it dropped this morning.
MD1200 - 1 disk group - 4 LUN's - default group has all LUN's included
MD3200 - same config as above.
Alternate LUN's set to alternate controllers as owner
I have the MD logs and ESX logs.
Has anyone seen this very strange behavior before?
Thanks