Set-Dedup Volume

Specifies the input to this cmdlet. You can use this parameter, or you can pipe the input to this cmdlet.

Specifies an array of system volumes. Specify one or more volume IDs, drive letters, or volume GUID paths. For drive letters, use the format D:. For volume GUID paths, use the format \\?\Volume{{GUID}}. Separate multiple volumes with a comma.

Runs the cmdlet as a background job. Use this parameter to run commands that take a long time to complete.

The cmdlet immediately returns an object that represents the job and then displays the command prompt. You can continue to work in the session while the job completes. To manage the job, use the *-Job cmdlets. To get the job results, use the Receive-Job cmdlet.

For more information about Windows PowerShell background jobs, see about_Jobs .

Specifies the number of identical chunks of data that the deduplication engine encounters before the server creates a redundant copy of the data chunk. This increases the reliability of the server by adding redundancy to the most referenced chunks of data.

Deduplication detects corruptions and the deduplication scrubbing job restores the corrupted chunks from a redundant copy, if it is available. The default value is 100. The minimum value that you can set is 20. A low value for the ChunkRedundancyThreshold parameter reduces the effectiveness of data deduplication by creating more redundant copies of a chunk, and consumes more memory and disk space.

Runs the cmdlet in a remote session or on a remote computer. Enter a computer name or a session object, such as the output of a New-CimSession or Get-CimSession cmdlet. The default is the current session on the local computer.

Specifies an array of extension types that the deduplication engine excludes from data deduplication and optimization. Specify comma-separated values that are not preceded with a period (.). When you change this setting, you override the existing values.

Specifies an array of extension types, as strings, that the server does not optimize.

The Enable-DedupVolume cmdlet modifies this behavior, depending on the value of the UsageType parameter. If you use the current parameter to modify this behavior, and then run Enable-DedupVolume again, that cmdlet overrides your changes.

Specifies an array of names of root folders under which all files are skipped during data deduplication. Full paths are accepted, however mount points are ignored since the mount point can change after configuration. When you change this setting, you override the existing values.

Specifies the level of input/output parallelization during optimization for this volume. The acceptable values for this parameter are: integers from 0 to 36. The default value of 0 sets the system to automatically select an InputOutputScale value based on the size of the volume to deduplicate.

Specifies a number of days. The deduplication engine optimizes files that users have not accessed in the number of days that you specify. If the last access time is not available, then the deduplication engine uses the last modified time.

Specifies the minimum size threshold, in bytes, for files that are optimized. The deduplication engine does not optimize files that do not meet the minimum threshold.

Indicates whether or not the server compresses data after deduplication. Compression uses more processor cycles but provides additional space savings.

Specifies an array of file types that the deduplication engine excludes from compression. These file types are deduplicated but not compressed, typically because the file format is already compressed. Specify comma-separated values that are not preceded with a period (.). When you change this setting, you override the existing values.

Indicates that the server attempts to optimize currently open files. After specifying this parameter, the server may wait up to 15 minutes before it attempts to optimize open files.

Enable-DedupVolume modifies this behavior, depending on the value of the UsageType parameter. If you use the current parameter to modify this behavior, and then run Enable-DedupVolume again, that cmdlet overrides your changes.

Indicates that the server optimizes all files, including portions of files that are old enough, according to the value of the MinimumFileAgeDays parameter.

Enable-DedupVolume modifies this behavior, depending on the value of the UsageType parameter. If you use the current parameter to modify this behavior, and then run Enable-DedupVolume again, that cmdlet overrides your changes.

Returns an object representing the item with which you are working. By default, this cmdlet does not generate any output.

Specifies the maximum number of concurrent operations that can be established to run the cmdlet. If this parameter is omitted or a value of 0 is entered, then Windows PowerShell® calculates an optimum throttle limit for the cmdlet based on the number of CIM cmdlets that are running on the computer. The throttle limit applies only to the current cmdlet, not to the session or to the computer.

Indicates whether the deduplication engine performs a byte-for-byte verification for each duplicate chunk that optimization creates, rather than relying on a cryptographically strong hash. We do not recommend that you use this parameter. Setting this parameter to $True can degrade optimization performance.

Specifies an array of volume IDs.