Set-DedupVolume

Set-DedupVolume

Changes data deduplication settings on one or more volumes.

Syntaxe

Parameter Set: Query (cdxml)
Set-DedupVolume [-Volume] <String[]> [-ChunkRedundancyThreshold <UInt32> ] [-CimSession <CimSession[]> ] [-ExcludeFileType <String[]> ] [-ExcludeFileTypeDefault <String[]> ] [-ExcludeFolder <String[]> ] [-InformationAction <System.Management.Automation.ActionPreference> {SilentlyContinue | Stop | Continue | Inquire | Ignore | Suspend} ] [-InformationVariable <System.String> ] [-InputOutputScale <System.UInt32> ] [-MinimumFileAgeDays <UInt32> ] [-MinimumFileSize <UInt32> ] [-NoCompress <Boolean> ] [-NoCompressionFileType <String[]> ] [-OptimizeInUseFiles] [-OptimizePartialFiles] [-PassThru] [-ThrottleLimit <Int32> ] [-Verify <Boolean> ] [ <CommonParameters>] [ <WorkflowParameters>]

Parameter Set: InputObject (cdxml)
Set-DedupVolume [-ChunkRedundancyThreshold <UInt32> ] [-CimSession <CimSession[]> ] [-ExcludeFileType <String[]> ] [-ExcludeFileTypeDefault <String[]> ] [-ExcludeFolder <String[]> ] [-InformationAction <System.Management.Automation.ActionPreference> {SilentlyContinue | Stop | Continue | Inquire | Ignore | Suspend} ] [-InformationVariable <System.String> ] [-InputOutputScale <System.UInt32> ] [-MinimumFileAgeDays <UInt32> ] [-MinimumFileSize <UInt32> ] [-NoCompress <Boolean> ] [-NoCompressionFileType <String[]> ] [-OptimizeInUseFiles] [-OptimizePartialFiles] [-PassThru] [-ThrottleLimit <Int32> ] [-Verify <Boolean> ] [ <CommonParameters>] [ <WorkflowParameters>]

Description détaillée

The Set-DedupVolume cmdlet changes data deduplication settings on one or more volumes.

Paramètres

-ChunkRedundancyThreshold<UInt32>

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.

-CimSession<CimSession[]>

Exécute l'applet de commande dans une session distante ou sur un ordinateur distant. Entrez un nom d'ordinateur ou un objet de session, tels que le résultat d'une applet de commande New-CimSession ou Get-CimSession. La valeur par défaut est la session en cours sur l'ordinateur local.

-ExcludeFileType<String[]>

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.

-ExcludeFileTypeDefault<String[]>

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.

-ExcludeFolder<String[]>

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.

-InformationAction<System.Management.Automation.ActionPreference>

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.

-InformationVariable<System.String>

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.

-InputOutputScale<System.UInt32>

Specifies the level of input/output parallelization during optimization for this volume. Les valeurs acceptables pour ce paramètre sont les suivantes :  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.　

-MinimumFileAgeDays<UInt32>

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.

-MinimumFileSize<UInt32>

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.

-NoCompress<Boolean>

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

-NoCompressionFileType<String[]>

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.

-OptimizeInUseFiles

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.

-OptimizePartialFiles

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.

-PassThru

Renvoie un objet qui représente l'élément sur lequel vous travaillez. Par défaut, cette applet de commande ne génère pas de sortie.

-ThrottleLimit<Int32>

Spécifie le nombre maximal d'opérations simultanées qui peuvent être établies pour exécuter l'applet de commande. Si ce paramètre est omis ou si la valeur 0 est entrée, Windows PowerShell® calcule un seuil de limitation optimal pour l'applet de commande en fonction du nombre d'applets de commande CIM exécutées sur l'ordinateur. Le seuil de limitation s'applique uniquement à l'applet de commande en cours, non pas à la session ou à l'ordinateur.

-Verify<Boolean>

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.

-Volume<String[]>

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.

<CommonParameters>

Cette applet de commande prend en charge les paramètres courants : -Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutBuffer et -OutVariable. Pour plus d'informations, consultez  . about_CommonParameters (https://go.microsoft.com/fwlink/p/?LinkID=113216).

<WorkflowParameters>

Entrées

Le type d'entrée correspond au type des objets que vous pouvez adresser à l'applet de commande.

• System.String[]

• Microsoft.Management.Infrastructure.CimInstance#

  L'objet Microsoft.Management.Infrastructure.CimInstance est une classe de wrapper qui affiche les objets WMI (Windows Management Instrumentation). Le chemin après le symbole # fournit l'espace de noms et le nom de classe de l'objet WMI sous-jacent.

Sorties

Le type de sortie correspond au type des objets que l'applet de commande émet.

• Microsoft.Management.Infrastructure.CimInstance

  L'objet Microsoft.Management.Infrastructure.CimInstance est une classe de wrapper qui affiche les objets WMI (Windows Management Instrumentation). Le chemin après le symbole # fournit l'espace de noms et le nom de classe de l'objet WMI sous-jacent.

• Microsoft.Management.Infrastructure.CimInstance#ROOT/Microsoft/Windows/Deduplication/MSFT_DedupVolume

Exemples

Example 1: Set the exclude folders on a volume

This command sets the root folders under which all files are skipped during data deduplication. The ExcludeFolder parameter specifies that the data deduplication engine processes the files in all of the folders on volume F: except for files in the Temp folder and the SQL folder. If you exclude folders that contain previously optimized files, this command does not unoptimize those files. You have to manually unoptimze any previously optimized files specified by ExcludeFolder.

Note if the ExcludeFolder already contains optimized files, those optimized files are not automatically unoptimized by this command. Any previously optimized files under the ExcludeFolder will need to be manually unoptimized.

PS C:\> Set-DedupVolume –Volume "F:" -ExcludeFolder "F:\temp","F:\SQL"

Example 2: Set the minimum file age on a volume

This command sets the number of days since users have accessed a file before the deduplication engine optimizes the file. The MinimumFileAgeDays parameter specifies that the data deduplication engine processes the files in all of the folders on volume E: that were not accessed in the last 10 days.

PS C:\> Set-DedupVolume -Volume "E:" –MinimumFileAgeDays 10

Example 3: Set the chunk redundancy threshold on a volume

This command sets the number of identical chunks of data that the deduplication engine encounters during deduplication before the server creates a redundant copy of the data chunk. The MinimumFileAgeDays parameter specifies that the data deduplication engine processes the files in all of the folders on volume D: that were not accessed in the last 15 days. The ChunkRedundancyThreshold parameter specifies that if the data deduplication engine discovers 50 chunks of identical data, it makes one redundant copy as a safeguard.

PS C:\> Set-DedupVolume –Volume "D:" -MinimumFileAgeDays 15 –ChunkRedundancyThreshold 50

Rubriques connexes

Disable-DedupVolume

Enable-DedupVolume

Get-DedupVolume