ginolard (5/12/2013)
1 NIC each only for Public, iSCSI and Heartbeat connections (no more NIC Teaming)
Under Windows 2008, teaming is fully supported for the public network and the Heartbeat network, never had an issue with it.
However, as detailed in my article, you must not team the iSCSI network as failover and management of the network(s) must be left to the control of the MPIO\MCS software. Teaming moves control of the network outside of the iSCSI policies.
ginolard (5/12/2013)
MPIO uninstalled on all nodes
unnecessary at this point IMHO
ginolard (5/12/2013)
The two disks attached to the HP MSA filer still lose ownership around the same time each day and throw 1038 events.This is starting to annoy me now 😉
Ah now this shows a pattern. The HP filer isn't shared by any chance between multiple systems is it?
I had an issue recently where a set of SQL Servers with LUNs presented from an HP EVA would generate slow I\O messages from SQL Server and on some occasions the drives would disappear from under the server 😉
It transpired that a pre prod SQL Server shared the same array with a multi Terrabyte database which was merrily refreshed once a week by a DBA. Everytime he ran the restore the transaction rate on the array went through the roof and beyond the architecural limit of the array.
Look at the storage and see what else is sharing it, then look at what they do around the time frame you are experiencing.
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"Ya can't make an omelette without breaking just a few eggs" 😉