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IVssDifferentialSoftwareSnapshotManagementQueryDiffAreasOnVolume Method

The QueryDiffAreasOnVolume(String) method queries shadow copy storage areas that physically reside on the given volume

Namespace:  Alphaleonis.Win32.Vss
Assembly:  AlphaVSS.Common (in AlphaVSS.Common.dll) Version: (
IList<VssDiffAreaProperties> QueryDiffAreasOnVolume(
	string volumeName


Type: SystemString

Name of the volume that contains shadow copy storage areas.

The name of the volume must be in one of the following formats:

  • The path of a volume mount point with a backslash (\)
  • A drive letter with backslash (\), for example, D:\
  • A unique volume name of the form \\?\Volume{GUID}\ (where GUID is the unique global identifier of the volume) with a backslash (\)

Return Value

Type: IListVssDiffAreaProperties
A list of VssDiffAreaProperties objects describing the shadow copy storage areas that physically reside on the given volume.
UnauthorizedAccessExceptionCaller does not have sufficient backup privileges or is not an administrator.
OutOfMemoryExceptionThe caller is out of memory or other system resources.
ArgumentExceptionOne of the parameter values is not valid.
ArgumentNullExceptionOne of the arguments was
SystemExceptionUnexpected error. The error code is logged in the error log file.
VssProviderVetoExceptionExpected provider error. The provider logged the error in the event log.
See Also