Backing up VHDs with Backup Exec 2010

polizei11
polizei11 used Ask the Experts™
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Hello all,

I have a server running Server 2008 with Backup Exec 2010, I have purchased and installed the Hyper-V Agent from symantec (as I know I need this to keep the Hyper-V Servers on to backup)

However, every time I run a backup it fails right away with the error

"Virtual machine "CWCDC" has been excluded from the backup as the virtual machine uses one or more physical disks. Us the Backup Exec Remote Agent on the virtual machine for backup operations"

However if I turn the virtual machine off I can backup just fine. Though I cannot do this on a regular basis (which is why I bought the agent.)

As I type I'm on hold with Symantec Support (2hrs so far without talking with anyone!) so I wanted to see what you all thought of this issue.

Thanks!

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Paul SolovyovskySenior IT Advisor
Top Expert 2008

Commented:
As a test also install Backup Exec agent on the OS.  It may need to quiesce the virtual machine and the backup exec agent may help it with VSS

I use the vmware agent for most of my work but to use GRT it requires the bakcup exec agent installed in the OS.

Author

Commented:
Will try

Author

Commented:
Paulsolov

Tried that to no avail. Symantec has elevated this to level 2 (whatever that really means) any other ideas in the meantime?
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Paul SolovyovskySenior IT Advisor
Top Expert 2008

Commented:
Ufortunately I use it with vmware and not hyper-v.  I should stand up a lab of hyper v r2 one of these days and kick the tires.
binarybonsai
Commented:
Looks like The VM you are trying to backup is using a pass through disk ?

If that is the case, it isn't supported by Symantec



http://seer.entsupport.symantec.com/docs/319300.htm


Pass Through Disk in Hyper-V : Hyper-V allows virtual machines to access storage mapped directly to the Hyper-V server without requiring the volume be configured. The storage can either be a physical disk internal to the Hyper-V server or it can be a Storage Area Network (SAN) Logical Unit (LUN) mapped to the Hyper-V server. To ensure the Guest has exclusive access to the storage, it must be placed in an Offline state from the Hyper-V server perspective. Additionally, this raw piece of storage is not limited in size so, hypothetically, it can be a multi-terabyte LUN.
As per the SCL the Pass Through is not supported if:
Physical(Pass Through) DAS or SAN on the Host directly attached to the Guest
Physical (Pass Through) RDAS on the Host directly attached to Guest
Guest Disk attached via SAN(iSCSI initiator)


Author

Commented:
You are correct it was a physical disk that was attached to the Hyper-V machine that was causing failures. We attached that disk to another server and Iw as able to backup sucessfully.

Thanks!

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