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ITsVISTA KB-Link: KB975831

A non-persistent snapshot cleanup operation is aborted by VSS if the VSS hardware provider takes more than three minutes to perform this operation on a computer that is running Windows Server 2008 or Windows Vista

When the Volume Shadow Copy Service (VSS) hardware provider takes more than three minutes to clean up a non-persistent snapshot set, the operation is aborted by VSS. Therefore, the hardware provider has insufficient time to delete all non-persistent snapshots. When this problem occurs, you may experience one or more of the following symptoms:

  • The hardware provider is in a bad state.
  • The destination LUNs are in an inconsistent state.
  • In the next VSS operations, the provider is vetoed and SCSI errors occur.
  • In Device Manager, an exclamation point (!) is displayed in front of a disk device to state that the disk device does not work correctly.

Note: This issue usually occurs if the snapshot set has multiple logical unit number (LUN) devices.

There is a download that resolves this issue. See Hotfixes for details.
32-bit Download: Contact Microsoft
64-Bit Download: Contact Microsoft

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB975831.

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