Diff Area Integrity
Applies To: Windows Server 2008 R2
The Diff Area is the storage space that Shadow Copies of Shared Folders allocates on a volume for maintaining the snapshots of the contents of shared folders. A snapshot is a block-level set of information that represents the differences between the current content and content from a previous point in time. The integrity of existing and new snapshots depends on the integrity of the Diff Area.
Events
| Event ID | Source | Message |
|---|---|---|
VolSnap |
The shadow copy of volume %2 could not create a diff area file on volume %3 | |
VolSnap |
The shadow copy of volume %2 could not be created because volume %3, which is specified as part of the diff area, is not an NTFS volume or an error was encountered while trying to determine the file system type of this volume. | |
VolSnap |
The shadow copy of volume %2 could not lock down the location of the diff area file on volume %3. | |
VolSnap |
The shadow copies of volume %2 were aborted because of an IO failure on volume %3. | |
VolSnap |
The shadow copies of volume %2 were aborted because volume %3, which contains a diff area file for this shadow copy, was force dismounted | |
VolSnap |
There was insufficient disk space on volume %3 to create the shadow copy of volume %2. Diff area file creation failed. | |
VolSnap |
There was insufficient disk space on volume %3 to grow the diff area for shadow copies of %2. As a result of this failure all shadow copies of volume %2 are at risk of being deleted. | |
VolSnap |
The shadow copies of volume %2 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. | |
VolSnap |
The oldest shadow copy of volume %2 was deleted to keep disk space usage for shadow copies of volume %2 below the user defined limit. | |
VolSnap |
The shadow copies of volume %2 were aborted because the diff area file failed to grow. | |
VolSnap |
The shadow copies of volume %2 were aborted because the diff area file could not grow due to a user imposed limit. | |
VolSnap |
There was a user imposed limit that prevented disk space on volume %3 from being used to grow the diff area for shadow copies of %2. As a result of this failure all shadow copies of volume %2 are at risk of being deleted. | |
VolSnap |
The shadow copies of volume %2 were aborted because volume %3 has been dismounted. | |
VolSnap |
When preparing a new volume shadow copy for volume %2, the shadow copy storage on volume %3 did not have sufficiently large contiguous blocks. Consider deleting unnecessary files on the shadow copy storage volume or use a different shadow copy storage volume |