Windows Server 2008 R2 Backup failing with error - 0x8004231F

Question

Hi,
I have Windows Server 2008 R2 Web Edition. Everything was working fine until recently. I tried checking for the log files, but I see that there are no log files that are created now in the location C:\Windows\Logs\WindowsServerBackup. The only files that
are being created recently are of the type mentioned below.
Wbadmin.1.etl
WbadminUI.0.etl
etc.
I tried removing the old backup and starting a new backup. But, even now it is failing with the same error.
When running the backup from the PowerShell, the output is as below.
PS C:\Users\administrator> Wbadmin start backup -backupTarget:\\localhost\E$\WindowsImageBackup\Server01 -systemState -vss
Copy
wbadmin 1.0 - Backup command-line tool
(C) Copyright 2004 Microsoft Corp.
Note: The backed up data cannot be securely protected at this destination.
Backups stored on a remote shared folder might be accessible by other
people on the network. You should only save your backups to a location
where you trust the other users who have access to the location or on a
network that has additional security precautions in place.
Retrieving volume information...
This will back up volume System Reserved (100.00 MB) (Selected Files),SAN(I:) (Selected Files),Local Disk(C:) (Selected
Files) to \\localhost\E$\WindowsImageBackup\Server01.
Do you want to start the backup operation?
[Y] Yes [N] No y
The backup operation to \\localhost\E$\WindowsImageBackup\Server01 is starting.
Starting to back up the system state [12/8/2013 9:29 AM]...
Creating a shadow copy of the volumes specified for backup...
Creating a shadow copy of the volumes specified for backup...
Creating a shadow copy of the volumes specified for backup...
Summary of the backup operation:
The backup of the system state failed [12/8/2013 9:30 AM].
Log of files successfully backed up:
C:\Windows\Logs\WindowsServerBackup\Backup-08-12-2013_09-29-49.log
Log of files for which backup failed:
C:\Windows\Logs\WindowsServerBackup\Backup_Error-08-12-2013_09-29-49.log
There is not enough disk space to create the volume shadow copy on the storage location. Make sure that, for all volumes
 to be backup up, the minimum required disk space for shadow copy creation is available. This applies to both the backup
 storage destination and volumes included in the backup.
Minimum requirement: For volumes less than 500 megabytes, the minimum is 50 megabytes of free space. For volumes more th
an 500 megabytes, the minimum is 320 megabytes of free space.
Recommended: At least 1 gigabyte of free disk space on each volume if volume size is more than 1 gigabyte.
ERROR - A Volume Shadow Copy Service operation error has
occurred: (0x8004231f)
Insufficient storage available to create either the shadow copy storage file or other shadow copy data.
If you see the free space available in each of the drives, they are in plenty.
C:\ 7.5 GB free of 70 GB
E:\ 250 GB free of 499 GB
I:\ 86.7 GB free of 350 GB
I am out of any hints on how I can proceed now. Has any one had similar issues? Can any one give any hint on this? Thanks.
Thanks.

Answer 1

Some Additional info.
Shadow Copy Storage association
   For volume: (\\?\Volume{a9fb0474-f1bd-11e0-b235-806e6f6e6963}\)\\?\Volume{a9f
b0474-f1bd-11e0-b235-806e6f6e6963}\
   Shadow Copy Storage volume: (\\?\Volume{a9fb0474-f1bd-11e0-b235-806e6f6e6963}
\)\\?\Volume{a9fb0474-f1bd-11e0-b235-806e6f6e6963}\
   Used Shadow Copy Storage space: 0 B (0%)
   Allocated Shadow Copy Storage space: 0 B (0%)
   Maximum Shadow Copy Storage space: 32 MB (32%)
Shadow Copy Storage association
   For volume: (I:)\\?\Volume{ddf6a51c-1282-11e3-b291-000c293b01d1}\
   Shadow Copy Storage volume: (I:)\\?\Volume{ddf6a51c-1282-11e3-b291-000c293b01
d1}\
   Used Shadow Copy Storage space: 0 B (0%)
   Allocated Shadow Copy Storage space: 0 B (0%)
   Maximum Shadow Copy Storage space: 35 GB (10%)
Shadow Copy Storage association
   For volume: (E:)\\?\Volume{0e3bf713-125d-11e3-b2dd-000c293b01bd}\
   Shadow Copy Storage volume: (E:)\\?\Volume{0e3bf713-125d-11e3-b2dd-000c293b01
bd}\
   Used Shadow Copy Storage space: 0 B (0%)
   Allocated Shadow Copy Storage space: 0 B (0%)
   Maximum Shadow Copy Storage space: 149.999 GB (30%)
Shadow Copy Storage association
   For volume: (C:)\\?\Volume{a9fb0475-f1bd-11e0-b235-806e6f6e6963}\
   Shadow Copy Storage volume: (C:)\\?\Volume{a9fb0475-f1bd-11e0-b235-806e6f6e69
63}\
   Used Shadow Copy Storage space: 0 B (0%)
   Allocated Shadow Copy Storage space: 0 B (0%)
   Maximum Shadow Copy Storage space: 4.99 GB (7%)
Hope this might also help you experts to get a little more information.