SQL Server
Version: Microsoft SQL
Server 2012 (SP1) - 11.0.3000.0 (X64) Oct 19 2012 13:38:57 Copyright (c)
Microsoft Corporation Enterprise Edition (64-bit) on Windows NT 6.2 <X64>
(Build 9200: )<o:p></o:p>
Windows
Version: Windows
Server 2012 Standard<o:p></o:p>
SQL Server
Installation: 5 node
active/active multi instance Failover Cluster<o:p></o:p>
Problem statement:
We recently migrated to SQL Server 2012 on 5 node failover cluster. Just yesterday
(April 03 ,2013) we received twice the subjected error. SQL Server instance do
not allow any access to production database when subjected error occurs. After some
while start allowing access after performing DBCC checkdb (without errors). In addition
to above SQL Server error, we are also observing MPIO errors and warnings in
windows event log since March 08, 2013<o:p></o:p>
windows event log error and Warning
Warning:
\Device\MPIODisk9
is currently in a degraded state. One or more paths have failed, though the
process is now complete.<o:p></o:p>
Error: Afail-over on \Device\MPIODisk9 occurred.<o:p></o:p>