In a Windows environment, the Set-DfsrMembership cmdlet is used to manage the membership of a Distributed File System Replication (DFSR) group. DFSR is a feature in Windows Server that allows the replication of files and folders between servers for data redundancy and availability. By using Set-DfsrMembership, you can add or remove members from a DFSR group, change the primary member, or modify the staging quota for a member.

Managing the membership of a DFSR group is crucial for maintaining an efficient and reliable file replication system. It allows you to control which servers participate in the replication process and adjust the replication settings according to your requirements.

To use Set-DfsrMembership, you need to have administrative privileges on the DFSR group and be familiar with PowerShell, as it is the recommended method for managing DFSR in a Windows environment.

Examples:

1. Adding a member to a DFSR group:

   Set-DfsrMembership -GroupName "MyDFSRGroup" -ComputerName "Server2" -IsPrimary $false

   This example adds "Server2" as a member to the DFSR group named "MyDFSRGroup". The -IsPrimary $false parameter specifies that the added member is not the primary member.

2. Removing a member from a DFSR group:

   Set-DfsrMembership -GroupName "MyDFSRGroup" -ComputerName "Server2" -RemoveMember

   This example removes "Server2" from the DFSR group named "MyDFSRGroup". The -RemoveMember parameter indicates that the specified computer should be removed from the group.

3. Changing the primary member of a DFSR group:

   Set-DfsrMembership -GroupName "MyDFSRGroup" -ComputerName "Server3" -IsPrimary $true

   This example changes the primary member of the DFSR group "MyDFSRGroup" to "Server3". The -IsPrimary $true parameter sets "Server3" as the primary member.

4. Modifying the staging quota for a DFSR member:

   Set-DfsrMembership -GroupName "MyDFSRGroup" -ComputerName "Server2" -StagingQuotaInMB 2048

   This example sets the staging quota for "Server2" in the DFSR group "MyDFSRGroup" to 2048 megabytes. The -StagingQuotaInMB parameter specifies the new staging quota.