VCB on Backup server with HP Eva and Dell AX4 storage systems

[winetou]

I have two storage systems connected to one backup server. There is installed PowerPath 5.2 on Windows 2003 Server x64. Windows see every storage only once, so I think that multi-path access to the storage works properly. Everytime I try to start browse (or start backup job) a virtual machine on HP Eva everythink is ok, but for VM on AX4 i recive error message:

Error: Cannot open disk blklst

://snapshot-2627[VRAID5_1,43TB_datastoreDell3] PLBOLFS01/PLBOLFS01.vmdk@plbolvc:

443?xxxx/xxxx. Cannot open disk file: Error : Disk library failed (Cannot access

a SAN/iSCSI LUN backing this virtual disk. (Hint: If you are using vcbMounter y

ou can use the option "-m ndb" to switch to network based disk access if this is

what you want.) If you were attempting file-level access, stop the vmount Servi

ce by typing "net stop vmount2" on a command prompt to force vmount to re-scan f

or SAN LUNs and re-try the command.). Unable to open 'blklst://snapshot-2627[VRA

ID5_1,43TB_datastoreDell3] PLBOLFS01/PLBOLFS01.vmdk@plbolvc:443'. Failed to conf

igure disk scsi0:0.

An error occurred, cleaning up

...

Deleted directory d:\mnt\PLBOLFS01

failed to prepare PLBOLFS01 for backup, PrepareForBackup() returned error 1

External command failed. See error above.

Exit Code: 1

What can I do with it?

VCB Version 1.5

[dconvery]

It is your version of PowerPath. Try downgrading it to a lower version or not using it at all. You don't really need multipathing for VCB to work properly.

Dave

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If the automobile had followed the same development cycle as the computer, a Rolls-Royce would today cost $100, get a million miles per gallon, and explode once a year, killing everyone inside.

Robert X. Cringely, InfoWorld magazine

[winetou]

I have already tried older version of PowerPath as well as without PowerPath with the same resoult. Any other ideas?

[dconvery · Accepted solution]

Next step would be to double check your zoning and lun masking. There could be a conflict with the differnt mpio drivers between the eva and clariion. I would try removing all mpio drivers too.

Dave

************************

If the automobile had followed the same development cycle as the computer, a Rolls-Royce would today cost $100, get a million miles per gallon, and explode once a year, killing everyone inside.

Robert X. Cringely, InfoWorld magazine

[winetou]

After removing all MPIO drivers I'm able to do vcb backup on both AX4 and Eva 4000 storage systems. Thank you

[dconvery]

Glad to help

Dave

************************

If the automobile had followed the same development cycle as the computer, a Rolls-Royce would today cost $100, get a million miles per gallon, and explode once a year, killing everyone inside.

Robert X. Cringely, InfoWorld magazine