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SBS 2011 can't perform full backup

Have recently installed SBS 2011.  When i tried to run a full backup got an error that there was not enough space available.  After doing some research discovered that this is due to the system reserved partition 100MB only having 38MB of free space.  I have Bit Defender Business AV also installed and people have said that this is one of the causes.  I have tried to disable the USN Journal but it keeps enabling itself after restart.  It seems as if the only way is to increase the size of the system reserved partition, bloody Microsoft.  Please can some tell me how to do this other than having to purchase 3rd party software.
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eisenbud
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eisenbud
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1 Solution
 
jerseysamCommented:
You could try unsing Diskpart from the command prompt.

Diskpart.exe

DISKPART > Select Volume 1
Volume 1 is the selected volume.

DISKPART > Extend Size=20000 ("20000 will expand the disk by 20GB as an example, if no size is specified all available space will be allocated to the partition") Disk Part successfully extended the volume.

DISKPART > Exit

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jerseysamCommented:
Commands etc for disk part:

http://support.microsoft.com/kb/300415
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Cliff GaliherCommented:
The 100MB partition is installed by all modern versions of windows (client and server) for bitlocker. They are always 100MB and they always have about 38MB free. DON'T mess with them. It is NOT the cause of your failing backup. Whoever told you that was misinformed. If it was, millions of machines would fail backups, since it is present on all modern installs.

By far the most common reason for the error you see is because the backup target is too small or because disk manager cannot access all the space (many 3TB drives have this issue, for example.) look there first, but leave that 100MB partition alone. It has no bearing on your problem.

-Cliff
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eisenbudAuthor Commented:
The problem only seems to occur if i do a full system backup.  If i choose custom backup and deselect Bare Metal Recovery, System State and System Reserved and backup only the local drives it backups up fine.  This is a new install and the backup drives are 2TB and empty.  Total backup size of whole server is approx. 300GB.
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eisenbudAuthor Commented:
The message i get from Windows Backup is as follows:
Backup failed to complete.  There is not enough disk space to create the volume shadow copy on the storage location. The volume shadow copy operation failed with the following error ox8004231F

In the application eventlogs i get the following:
Event ID 521:
The backup operation that started at '¿2011¿-¿10¿-¿24T13:51:20.804000000Z' 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.

Event ID: 8230
Volume Shadow Copy Service error: Failed resolving account spsearch with status 1376. Check connection to domain controller and VssAccessControl registry key. Error-specific details:
   Error: NetLocalGroupGetMemebers(spsearch), 0x80070560, The specified local group does not exist.

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Cliff GaliherCommented:
What are the partition sizes across all of your DAS?
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eisenbudAuthor Commented:
System reserved     Capacity:100MB Free Space: 38MB
C Drive  Capacity: 299.61GB  Free Space: 206.11GB
E Drive  Capacity: 1740GB  Free Space: 1565.56GB

External Backup Drive:  Capacity:1.4TB Free Space: 1091.08GB
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Cliff GaliherCommented:
There ya go. Because windows backup uses image based backups if you do a full backup, the destination drive MUST be bigger than the source drives. 1.4TB is less than the source 2TB you are trying to back up, so backups will fail.
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eisenbudAuthor Commented:
Have a similar setup at another site and am not facing these problems.  Can't even backup just the system state alone.
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