Storage Management (ASM ACFS DNFS ODM) (MOSC)

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SCSI failure on ASM disk array

edited May 21, 2009 7:22AM in Storage Management (ASM ACFS DNFS ODM) (MOSC) 3 commentsAnswered
I have an ASM database on a Dell Powervault 220S disk array.  The other day, the ASM database went down with the following errors:

ORA-27091: unable to queue I/O
ORA-27070: async read/write failed
OSD-04016: Error queuing an asynchronous I/O request.
O/S-Error: (OS 1117) The request could not be performed because of an I/O device error.

The Windows Event Viewer showed an error at this same time that said "The device \Device\Scsi\mraid35x1 did not respond within the timeout period".  THis was an Event ID of 9.

Doc on this said to check connections, cables, etc.  I stopped, re-seated, rebooted, etc.  I checked the drivers, they are up to date.  The disks show no errors, but the +DATA diskgroup cannot be mounted in ASM.   When I try to manually mount the disk group I get the "ORA-15096 signalled during mount of diskgroup DATA" error.

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