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New-DedupSchedule

  • Reference
Module:
Deduplication

Creates a data deduplication schedule.

Syntax

New-DedupSchedule
   [-Name] <String>
   [-Type] <Type>
   [-DurationHours <UInt32>]
   [-Disable]
   [-StopWhenSystemBusy]
   [-Memory <UInt32>]
   [-Cores <UInt32>]
   [-Priority <Priority>]
   [-InputOutputThrottle <UInt32>]
   [-InputOutputThrottleLevel <InputOutputThrottleLevel>]
   [-Start <DateTime>]
   [-Days <DayOfWeek[]>]
   [-Full]
   [-ReadOnly]
   [-CimSession <CimSession[]>]
   [-ThrottleLimit <Int32>]
   [-AsJob]
   [<CommonParameters>]

Description

The New-DedupSchedule cmdlet creates a data deduplication schedule. This cmdlet returns a DeduplicationSchedule object that you can use to customize the data deduplication schedule. This cmdlet uses default settings to create a data deduplication schedule for the parameters that you do not specify.

You can create a schedule to run the following types data deduplication jobs:

  • Optimization This job performs both deduplication and compression of files according data deduplication policy for the volume. After initial optimization of a file, if that file is then modified and again meets the data deduplication policy threshold for optimization, the file is optimized again.
  • GarbageCollection This job processes deleted or modified data on the volume so that any data chunks that are no longer referenced are cleaned up. Garbage collection jobs process previously deleted or logically overwritten optimized content to create usable volume free space. When an optimized file is deleted or overwritten by new data, the old data in the chunk store is not immediately deleted. Garbage collection is scheduled to run weekly by default. Garbage collection is a processing-intensive operation, so you should allow the deletion load to reach a threshold and then manually run this job type, or schedule it for off hours.
  • Scrubbing This job processes data corruptions it finds during data integrity validation, performs possible corruption repair, and generates a scrubbing report.
  • Unoptimization This job undoes data deduplication on all of the optimized files on the volume. At the end of a successful unoptimization job, the server deletes all of the data deduplication metadata from the volume.

For more information, see Install and Configure Data Deduplication on TechNet.

Examples

Example 1: Create a data deduplication schedule for a garbage collection job

$params = @{
    Days          = 'Sunday'
    DurationHours = 5
    Name          = 'OffHoursGC'
    Priority      = 'Normal'
    Start         = '08:00'
    Type          = 'GarbageCollection'
}
New-DedupSchedule @params

This command creates a data deduplication schedule with a Name of OffHoursGC. The deduplication job Type is GarbageCollection. The job is scheduled to run every Sunday via the Days Parameter. The job will Start at 08:00 and run at Normal Priority. The command specifies DurationHours of 5 causing the server to cancel the job after 5 hours if the process has not ended.

Example 2: Create a data deduplication schedule for a scrubbing job

$params = @{
    Days               = @(
        'Monday'
        'Tuesday'
        'Wednesday'
        'Thursday'
        'Friday'
    )
    DurationHours      = 6
    Name               = 'OffHoursScrub'
    Priority           = 'Normal'
    Start              = '23:00'
    StopWhenSystemBusy = $true
    Type               = 'Scrubbing'
}
New-DedupSchedule @params

This command creates a data deduplication schedule for a Scrubbing Type job named OffHoursScrub. The command starts the scrubbing job at 23:00 on each day Monday through Friday. The StopWhenSystemBusy parameter specifies that the server stops the job when the system is busy and retries later. The DurationHours parameter specifies that the server cancels the job after 6 hours if the process has not ended. The job will run at Normal Priority

Example 3: Create a data deduplication schedule for an optimization job

$params = @{
    Days          = @(
        'Mon'
        'Tues'
        'Wed'
        'Thurs'
        'Fri'
    )
    DurationHours = 9
    Name          = 'MyWeekdayOptimization'
    Start         = '08:00'
    Type          = 'Optimization'
}
New-DedupSchedule @params

This command creates a data deduplication schedule for an Optimization Type job named MyWeekdayOptimization. The optimization job runs at a normal Priority every weekday evening at 08:00. The DurationHours parameter specifies that the server cancels the job after 9 hours if the process has not ended.

Parameters

-AsJob

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.

Type:SwitchParameter
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False

-CimSession

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.

Type:CimSession[]
Aliases:Session
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False

-Cores

Specifies an array of maximum percentages of physical cores that a job uses.

Type:UInt32
Aliases:MaximumCoresPercentage
Position:Named
Default value:None
Required:False
Accept pipeline input:True
Accept wildcard characters:False

-Days

Specifies an array of days of the week on which the server runs the data deduplication job. The acceptable values for this parameter are:

  • Monday
  • Tuesday
  • Wednesday
  • Thursday
  • Friday
  • Saturday
  • Sunday
Type:DayOfWeek[]
Accepted values:Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Position:Named
Default value:None
Required:False
Accept pipeline input:True
Accept wildcard characters:False

-Disable

Indicates that the server disables the data deduplication schedule immediately after you create it. The server does not run the data deduplication schedule at the time that you specify in the Start parameter. After you disable a data deduplication schedule, you can use the Set-DedupSchedule cmdlet to enable the schedule.

Type:SwitchParameter
Position:Named
Default value:None
Required:False
Accept pipeline input:True
Accept wildcard characters:False

-DurationHours

Specifies the number of hours that the server runs the task before canceling it. The value 0 indicates that the server runs the job to completion. This cmdlet safely stops a data deduplication job and does not affect the files that the server is processing when it cancels the job.

Type:UInt32
Position:Named
Default value:None
Required:False
Accept pipeline input:True
Accept wildcard characters:False

-Full

Indicates that garbage collection jobs free up all deleted or unreferenced data on the volume, if you specify the value GarbageCollection for the Type parameter. If you do not specify this parameter, garbage collection jobs free up space after a system threshold of delete data is exceeded. We recommend that you run garbage collection regularly without specifying this parameter, and then once a month specify this parameter and run garbage collection again.

If you specify the value Scrubbing for the Type parameter, this parameter indicates that scrubbing jobs validate the integrity of all data on the volume. If you do not specify this parameter, the scrubbing job validates only critical metadata and data integrity issues that data deduplication previously encountered. We recommend that you run scrubbing regularly without specifying this parameter, and then once a month specify this parameter and run scrubbing again.

Type:SwitchParameter
Position:Named
Default value:None
Required:False
Accept pipeline input:True
Accept wildcard characters:False

-InputOutputThrottle

Specifies the amount of input/output throttling applied to the deduplication job. Throttling ensures that deduplication does not interfere with other I/O intensive processes. The acceptable values for this parameter are: integers from 0 to 100. If you specify this parameter and the InputOutputThrottleLevel parameter, InputOutputThrottle takes precedence.

Type:UInt32
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False

-InputOutputThrottleLevel

Specifies the amount of I/O throttling that the job provides to ensure that the job does not interfere with other I/O intensive processes. The acceptable values for this parameter are:

  • None
  • Low
  • Medium
  • High
Type:InputOutputThrottleLevel
Accepted values:None, Low, Medium, High, Maximum
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False

-Memory

Specifies the maximum percentage of physical computer memory that the data deduplication job can use.

For optimization jobs, we recommend that you set a range from 15 to 50, and a higher memory consumption for jobs that you schedule to run when you specify the StopWhenSystemBusy parameter. For garbage collection and scrubbing jobs, which you typically schedule to run in off hours, you can set a higher memory consumption, such as 50.

Type:UInt32
Aliases:MaximumMemoryPercentage
Position:Named
Default value:None
Required:False
Accept pipeline input:True
Accept wildcard characters:False

-Name

Specifies a name for the data deduplication job schedule.

Type:String
Position:0
Default value:None
Required:True
Accept pipeline input:False
Accept wildcard characters:False

-Priority

Sets the CPU and I/O priority for the optimization job that you run by using this cmdlet. For jobs that you run when you specify the StopWhenSystemBusy parameter, we recommend that you set this parameter to Low. For typical optimization jobs, we recommend that you set this parameter to Normal.

Type:Priority
Accepted values:Low, Normal, High
Position:Named
Default value:None
Required:False
Accept pipeline input:True
Accept wildcard characters:False

-ReadOnly

Indicates that the scrubbing job processes and reports on corruptions that it finds but does not run any repair actions.

Type:SwitchParameter
Position:Named
Default value:None
Required:False
Accept pipeline input:True
Accept wildcard characters:False

-Start

Specifies a time to start this job. The default value is 1:45am. Type the date in a format that is standard for the system locale, such as dd-MM-yyyy (German [Germany]) or MM/dd/yyyy (English [United States]).

Type:DateTime
Position:Named
Default value:None
Required:False
Accept pipeline input:True
Accept wildcard characters:False

-StopWhenSystemBusy

Indicates that the server stops the job when the system is busy and retries later. We recommend that you specify this parameter when you set a low priority for the job.

Type:SwitchParameter
Position:Named
Default value:None
Required:False
Accept pipeline input:True
Accept wildcard characters:False

-ThrottleLimit

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.

Type:Int32
Position:Named
Default value:None
Required:False
Accept pipeline input:False
Accept wildcard characters:False

-Type

Specifies the type of data deduplication job. The acceptable values for this parameter are:

  • Optimization
  • GarbageCollection
  • Scrubbing
  • Unoptimization
Type:Type
Accepted values:Optimization, GarbageCollection, Scrubbing, Unoptimization
Position:1
Default value:None
Required:True
Accept pipeline input:True
Accept wildcard characters:False

Inputs

DateTime

DayOfWeek[]

SwitchParameter

UInt32

Microsoft.PowerShell.Cmdletization.GeneratedTypes.DedupSchedule.Priority

Microsoft.PowerShell.Cmdletization.GeneratedTypes.DedupSchedule.Type

Outputs

CimInstance

The Microsoft.Management.Infrastructure.CimInstance object is a wrapper class that displays Windows Management Instrumentation (WMI) objects. The path after the pound sign (#) provides the namespace and class name for the underlying WMI object.