Event ID: 25 in Application Event log (The shadow copies of volume <volume name> were aborted because the diff area file could not grow in time. Consider reducing the IO load on this system to avoid this problem in the future.)

Problem

Event ID: 25 in Application Event log (The shadow copies of volume were aborted because the diff area file could not grow in time. Consider reducing the IO load on this system to avoid this problem in the future.)

Error Message

Event ID: 25
Source: VolSnap
Description: The shadow copies of volume <drive lettter> were aborted because the diff area file could not grow in time. Consider reducing the IO load on this system to avoid this problem in the future.

Cause

SYMPTOMS:
 
  • Time-out errors occur in Volume Shadow Copy service writers.
  • Shadow copies are lost during backup and during times when there are high levels of input/output.
CAUSE:
 
The symptoms that are described earlier in this article may occur for one of the following reasons:
 
  • Volume Shadow Copy service writer time-out
  • Shadow copy deletion
  • Large audit log
  • Volsnap.sys driver has encountered excessive I/O activity and as a result the "diff" area cannot grow
  • computer has run out of shadow copy storage space

Solution

RESOLUTION(S):
 
1.  Run a CHKDSK and defrag the volume named in Event ID 25
 
2.  Download and install the latest VSS patch from Microsoft
 
Patches recommended for Windows 2003 (32 and 64 bit) machines:  
 
 
3.  Move the Shadow Copy Storage on the drive being backed up to another drive in order to reduce I/O load during the backup
 
4.  Contact Microsoft for further assistance
 
MICROSOFT DOCUMENTATION:
 
http://support.microsoft.com/kb/826936 - Time-out errors occur in Volume Shadow Copy service writers, and shadow copies are lost during backup and during times when there are high levels of input/output
 
 http://support.microsoft.com/kb/833167 - A Volume Shadow Copy Service (VSS) update package is available for Windows Server 2003
 
  http://support.microsoft.com/kb/887827 - A Volume Shadow Copy Service (VSS) update-2 package is available
 
  http://support.microsoft.com/kb/925799 - Error message when a Windows Server 2003-based computer has a high level of I/O activity: "The shadow copies of volume Volume_Name were aborted because the diff area file could not grow in time"
 
  http://support.microsoft.com/kb/940349 - Availability of a Volume Shadow Copy Service (VSS) update rollup package for Windows Server 2003 to resolve some VSS snapshot issues.

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