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Add Solution

Hyper-V - Backup Exec VSS Warning

Source: microsoft.public.virtualserver
Sent: 09/23/2008
From: Thomas Swafford
Message:

I migrated a VM running Winsows 2008 32bit from Vitual Server 2005 SP1 to
Hyper-V. I performed the uninstall of VMadditions successfully. When
backing up the system using Backup Exec I get the following errors in the
backup exec log. According to Symantec, these error are generated from VSS,
not backup exec.

Snapshot warning. File c:\windows\system32\drivers\msvmscsi.sys is not
present on the snapshot.

VSS Snapshot warning. File c:\windows\system32\drivers\vpc-s3.sys is not
present on the snapshot.

VSS Snapshot warning. File c:\windows\inf\oem2.inf is not present on the
snapshot.

VSS Snapshot warning. File c:\windows\system32\vpc-s3.dll is not present on
the snapshot.

I have remove the three driver entries from the
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\PnpLockdownFiles but this has not resolved the issue.

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Related Messages

Re: Hyper-V - Backup Exec VSS Warning

Sent: 09/23/2008
From: Thomas Swafford
Message:

Agreed. But my question is more: "How to I fix the issue?" i.e.: get those
drivers out of the VSS config.

"Bill Grant" wrote:

Show quoted text

> That looks like a warning that some of the drivers for emulated devices
> are missing. That is to be expected if you have removed the VMAdditions.
> They won't be needed in Hyper-V because it uses different "hardware".
>
>

Re: Hyper-V - Backup Exec VSS Warning

Sent: 09/24/2008
From: "Bill Grant" <not.available@online>
Message:

"Thomas Swafford" <(email address - cut out)> wrote in
message news:(email address - cut out)...

That looks like a warning that some of the drivers for emulated devices
are missing. That is to be expected if you have removed the VMAdditions.
They won't be needed in Hyper-V because it uses different "hardware".

Show quoted text

> I migrated a VM running Winsows 2008 32bit from Vitual Server 2005 SP1 to
> Hyper-V. I performed the uninstall of VMadditions successfully. When
> backing up the system using Backup Exec I get the following errors in the
> backup exec log. According to Symantec, these error are generated from
> VSS,
> not backup exec.
>
> Snapshot warning. File c:\windows\system32\drivers\msvmscsi.sys is not
> present on the snapshot.
>
> VSS Snapshot warning. File c:\windows\system32\drivers\vpc-s3.sys is not
> present on the snapshot.
>
> VSS Snapshot warning. File c:\windows\inf\oem2.inf is not present on the
> snapshot.
>
> VSS Snapshot warning. File c:\windows\system32\vpc-s3.dll is not present
> on
> the snapshot.
>
> I have remove the three driver entries from the
> HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\PnpLockdownFiles
> but this has not resolved the issue.
>

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