Event 521 Backup Failure

Hello, I get this in my event log. My Windows Server Backup will not work..

Event ID: 521 Source Backkup

The backup operation that started at '?2014?-?10?-?09T21:09:19.079000000Z' has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with following error code '2155348249'. Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.


I have tried to run a vssadmin and delete all the shadow volumes and it appears the problem in on drive F the destination. There is plenty of space available.

Running vssadmin in elevated mode.

I get this error...


vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2005 Microsoft Corp.



It believes there is not enough space. We had this issue awhile back and I found this to help

http://kb.ns86.net/tag/error-code-2155348249/

Its an unnecessary journal. Even though it states SBS it worked with our standard server machine.



It believes there is not enough space. We had this issue awhile back and I found this to help

http://kb.ns86.net/tag/error-code-2155348249/

Its an unnecessary journal. Even though it states SBS it worked with our standard server machine.



Followed the instructions and still get the same error



What is the size and type of the storage drive? Is it USB drive? Does it work if you try to backup to different HDD?
If it is a 4K sector (so called advanced format) drive then it will fail. Because in 2008R2 yet the Server Backup could not backup to these new disks.
Also it must fail if the drive is formatted as FAT32.



The destination drive is a USB drive, NTFS, layout simple. I can perform backups but I cannot backkup with system state. There is a 100mb partition reserved. I followed instructions below but it did not work. The reserved partition has 3 mb free.

Found this article, it did not work either...

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/A_12516-Failed-VSS-backup-Windows-Server-Backup-return-the-error-2155348249.html



Only 3MB free? What is occupying the rest of the space?

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