Set-OBRetentionPolicy 
	Sets the retention policy for the backup policy (OBPolicy object).
Syntax
Default (Default)
Set-OBRetentionPolicy
    [-Policy] <CBPolicy>
    [-RetentionPolicy] <CBRetentionPolicy>
    [-Confirm]
    [-WhatIf]
Description
The Set-OBRetentionPolicy cmdlet sets the retention policy for the backup policy (OBPolicy object).
The allowed retention days for the OBRetentionPolicy object are 7, 15,or 30.
This cmdlet supports WhatIf and Confirm parameters with a medium impact. The medium impact signifies that the cmdlet will not prompt the user for confirmation by default. The WhatIf parameter gives a verbose description of what the cmdlet does without performing any operation. The Confirm parameter specifies whether the cmdlet should prompt the user. Using -Confirm:$FALSE will override the prompt.
To use Microsoft Azure Backup cmdlets, the user needs to be an administrator on the protected machine.
Examples
EXAMPLE 1
$newpo = New-OBPolicy
New-OBRetentionPolicy | Set-OBRetentionPolicy -Policy $newpo
This example sets up and updates a new retention policy.
Parameters
-Confirm
Prompts you for confirmation before running the cmdlet.
Parameter properties
| Type: | SwitchParameter | 
| Default value: | False | 
| Supports wildcards: | False | 
| DontShow: | False | 
Parameter sets
(All)
| Position: | Named | 
| Mandatory: | False | 
| Value from pipeline: | False | 
| Value from pipeline by property name: | False | 
| Value from remaining arguments: | False | 
-Policy
Specifies the policy related to backup.
Parameter properties
| Type: | CBPolicy | 
| Default value: | None | 
| Supports wildcards: | False | 
| DontShow: | False | 
Parameter sets
(All)
| Position: | 2 | 
| Mandatory: | True | 
| Value from pipeline: | True | 
| Value from pipeline by property name: | False | 
| Value from remaining arguments: | False | 
-RetentionPolicy 
		Specifies the retention policy to be used for backup.
Parameter properties
| Type: | CBRetentionPolicy | 
| Default value: | None | 
| Supports wildcards: | False | 
| DontShow: | False | 
Parameter sets
(All)
| Position: | 3 | 
| Mandatory: | True | 
| Value from pipeline: | True | 
| Value from pipeline by property name: | False | 
| Value from remaining arguments: | False | 
-WhatIf 
		Shows what would happen if the cmdlet runs. The cmdlet is not run.
Parameter properties
| Type: | SwitchParameter | 
| Default value: | False | 
| Supports wildcards: | False | 
| DontShow: | False | 
Parameter sets
(All)
| Position: | Named | 
| Mandatory: | False | 
| Value from pipeline: | False | 
| Value from pipeline by property name: | False | 
| Value from remaining arguments: | False |