Start-VMFailover

Start-VMFailover

Starts failover on a virtual machine.

Syntax

Parameter Set: VMName
Start-VMFailover [-VMName] <String[]> [-AsJob] [-CimSession <Microsoft.Management.Infrastructure.CimSession[]> ] [-ComputerName <String[]> ] [-Credential <System.Management.Automation.PSCredential[]> ] [-Passthru] [-Prepare] [-Confirm] [-WhatIf] [ <CommonParameters>]

Parameter Set: VMName_Test
Start-VMFailover [-VMName] <String[]> -AsTest [-AsJob] [-CimSession <Microsoft.Management.Infrastructure.CimSession[]> ] [-ComputerName <String[]> ] [-Credential <System.Management.Automation.PSCredential[]> ] [-Passthru] [-Confirm] [-WhatIf] [ <CommonParameters>]

Parameter Set: VMObject
Start-VMFailover [-VM] <VirtualMachine[]> [-AsJob] [-Passthru] [-Prepare] [-Confirm] [-WhatIf] [ <CommonParameters>]

Parameter Set: VMObject_Test
Start-VMFailover [-VM] <VirtualMachine[]> -AsTest [-AsJob] [-Passthru] [-Confirm] [-WhatIf] [ <CommonParameters>]

Parameter Set: VMSnapshot
Start-VMFailover [-VMRecoverySnapshot] <VMSnapshot> [-AsJob] [-Passthru] [-Confirm] [-WhatIf] [ <CommonParameters>]

Parameter Set: VMSnapshot_Test
Start-VMFailover [-VMRecoverySnapshot] <VMSnapshot> -AsTest [-AsJob] [-Passthru] [-Confirm] [-WhatIf] [ <CommonParameters>]

Detaillierte Beschreibung

The Start-VMFailover cmdlet can be used for the following tasks:

   -- Fail over a Replica virtual machine to a chosen recovery point.

   -- Start a planned failover on a primary virtual machine.

   -- Create a test virtual machine on a Replica virtual machine.

Parameter

-AsJob

Runs the cmdlet as a background job.

-AsTest

Creates a test virtual machine using the chosen recovery point. You can use a test virtual machine to validate a Replica virtual machine. To stop a test failover, use the Stop-VMFailover cmdlet.

-CimSession<Microsoft.Management.Infrastructure.CimSession[]>

Das Cmdlet wird in einer Remotesitzung oder auf einem Remotecomputer ausgeführt. Geben Sie einen Computernamen oder ein Sitzungsobjekt ein, wie z. B. die Ausgabe eines New-CimSession oder Get-CimSession-Cmdlets. Der Standardwert ist die aktuelle Sitzung auf dem lokalen Computer.

-ComputerName<String[]>

Specifies one or more Hyper-V hosts on which failover is to be started. NetBIOS names, IP addresses, and fully qualified domain names are allowable. The default is the local computer. Use localhost or a dot (.) to specify the local computer explicitly.

-Credential<System.Management.Automation.PSCredential[]>

Specifies one or more user accounts that have permission to perform this action. The default is the current user.

-Passthru

Specifies that a virtual machine object is to be passed through to the pipeline representing the virtual machine on which failover is to be started.

-Prepare

Starts the planned failover on the primary virtual machine and replicates any pending changes. To complete the planned failover, use the Set-VMReplication and Start-VM cmdlets as shown in Example 4.

Note: The primary virtual machine must be shut down to prepare it for failover.

-VM<VirtualMachine[]>

Specifies the virtual machine for which failover is to be started.

-VMName<String[]>

Specifies the name of the virtual machine for which failover is to be started.

-VMRecoverySnapshot<VMSnapshot>

Specifies the recovery snapshot to use during a failover. (This parameter is not required for a planned failover.)

-Confirm

Fordert Sie vor der Ausführung des Cmdlet zum Bestätigen auf.

-WhatIf

Zeit, was passieren würde, wenn das Cmdlet ausgeführt wird. Das Cmdlet wird nicht ausgeführt.

<CommonParameters>

Dieses Cmdlet unterstützt die allgemeinen Parameter: -Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutBuffer und -OutVariable. Weitere Informationen finden Sie unter about_CommonParameters (https://go.microsoft.com/fwlink/p/?LinkID=113216).

Eingaben

Der Eingabetyp ist der Typ der Objekte, die Sie per Piping an das Cmdlet übergeben können.

Ausgaben

Der Ausgabetyp ist der Typ der Objekte, die vom Cmdlet ausgegeben werden.

• None by default; Microsoft.HyperV.PowerShell.VirtualMachine if –PassThru is specified.

Beispiele

Example 1

This example starts failover of a virtual machine named VM01 with recovery point Snapshot01.

Note: Recovery points are stored as snapshots. To get a list of all snapshots, use the Get-VMSnapshot cmdlet.

PS C:\> Get-VMSnapshot VM01 –Name Snapshot01 | Start-VMFailover

Example 2

This example starts a test failover of a virtual machine named VM01.

PS C:\> Start-VMFailover VM01 -AsTest

Example 3

Starts a test failover of a virtual machine named VM01 with recovery point Snapshot01.

PS C:\> Get-VMSnapshot VM01 –Name Snapshot01 | Start-VMFailover -AsTest

Example 4

This example shows the cmdlets you use to perform a planned failover. The first command prepares for the planned failover of a primary virtual machine named VM01 by replicating any pending changes. The second command fails over the Replica virtual machine. The third command switches the Replica virtual machine to a primary virtual machine. The fourth command starts the virtual machine that has been switched from a Replica virtual machine to a primary virtual machine.

PS C:\> Start-VMFailover –Prepare –VMName VM01  -computername MyPrimary.contoso.com
PS C:\> Start-VMFailover –VMName VM01 –computername MyReplica.contoso.com
PS C:\> Set-VMReplication –Reverse –VMName VM01 –computername MyReplica.contoso.com
PS C:\> Start-VM –VMName VM01 –computername MyReplica.contoso.com