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Backup failing on Windows 2012

I have windows 2012 server which hosts two VMs. I had complete backup that was running to a usb drive that is 2 TB. The back up was running fine for the past year, but now it is failing. As you can see in the attached image. It says that there is not space on the destination drive. The total data is under 500GB on the server.

Imtiaz Hasham

Can you give us the details from event viewer please? Also, what is the combined size of the VHDs? And what is the total space on the server?

netcomp

ASKER

Below is the event log for the failed backup. When I go to VM manager, it shows one VM around 120GB and another around 40GB. On the other hand, The drive that stores the Vms on the VM host shows that the total data is around 500GB and the VMs are all I have on that drive. Not sure what is taking the extra space. I believe that I only allocated 120GB o each VM anyways.

Thank you,

Log Name: Application
Source: Microsoft-Windows-Backup
Date: 5/3/2014 2:07:28 AM
Event ID: 517
Task Category: None
Level: Error
Keywords:
User: SYSTEM
Computer: SERRHV1
Description:
The backup operation that started at '¿2014¿-¿05¿-¿03T03:30:18.046832500Z' has failed with following error code '0x80780166' (Windows Backup encountered an error when writing data to the backup target.). Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Backup" Guid="{1DB28F2E-8F80-4027-8C5A-A11F7F10F62D}" />
<EventID>517</EventID>
<Version>1</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2014-05-03T06:07:28.407256900Z" />
<EventRecordID>12525</EventRecordID>
<Correlation />
<Execution ProcessID="4312" ThreadID="4568" />
<Channel>Application</Channel>
<Computer>SERRHV1</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="BackupTime">2014-05-03T03:30:18.046832500Z</Data>
<Data Name="ErrorCode">0x80780166</Data>
<Data Name="ErrorMessage">%%2155348326</Data>
</EventData>
</Event>

SOLUTION

Pearltech2013

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noxcho

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SOLUTION

Shamsul Kamal

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netcomp

ASKER

Sorry for the delay in my response.
I have the disk dedicated for backup so it does not show under MyComputer, but under disk management, the drive shows only 3MB of space and it sowes 1.8TB uses. I wonder that is because Windows had made the disk into a backup disk and it shows as full regardless if the space used. Under the Windows backup, it tells me that I have 238 backups on that disk. I was under the impetration that Windows Backup will remove the latest old backup as I don't see any options to mange the backup disk . Not sure where to go from here??

noxcho

You have to delete the old images manually. The retention feature from Window Backup is not perfect.
http://social.technet.microsoft.com/Forums/windowsserver/en-US/10fb5d5c-19ee-4749-9129-2046ea5551bd/reg-retention-policy-in-windows-server-backup
If you want more flexible backup solution then pay your attention to third party backup tools such as Paragon, Symantec or Schadow Protect.

netcomp

ASKER

I ended up replacing the backup driver with a larger one. Deleting the backups did not work. thank you,

ASKER CERTIFIED SOLUTION

TWAINdriver

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netcomp

ASKER

I ended up replacing the backup drive.