Errors in Windows event log when snapshots are unpresented

[Jeremy C]

EVA 8100, RSM 5.0.118

For backups, each night snapshots are created and presented to the backup server (Windows 2008). I get the following error in the Windows event log when the snapshots are unpresented:

An unrecoverable path failure occurred on SCSI address (3.0.7.16). Disk 600508B4000C3AFB000030000BCA0000 is still accessible over redundant path(s).

The RSM script to create and present the snapshots looks like this:
SnapshotStorageVolume(...)
CreateHostVolumeDiscrete(...)
MountHostVolume(...)

and they are removed with:
UnmountHostVolume(...)
DeleteHostVolume(...)
UnpresentStorageVolume(...)
DeleteStorageVolume(...)

In general, everything works despite the event log errors. The backup server has been having some problems every couple weeks and I'm curious is this is causing problems with Windows.

Thanks

[Johan Guldmyr]

Hi!

Just a quick thought (haven't seen this problem before): does the backupserver have MPIO set up/is it zoned in to both paths?

Does the MPIO log say anything?