Restoring Replicas

  • Article

Published : September 27, 2005

When you restore the databases, the protection groups are also restored. However, the storage pool disk space is not allocated to the restored protection groups. Before you restore the replicas for the protection groups, you must reallocate the disk space that will contain the replica and the transfer log.

You can reallocate space for the replicas by using the Modify Disk Allocation dialog box in DPM Administrator Console or by running the DpmSync tool with the -ReallocateReplica parameter. For instructions on allocating space using the console, see “How to modify disk allocation” (https://go.microsoft.com/fwlink/?LinkId=51981) in DPM Help. After you have reallocated space for the replicas, you can restore the replicas to the DPM server by using the following procedure.

To restore replicas

  1. Use your backup program to restore the replica data from tape.

    Note

    If you are restoring from a tape backup taken from the file server or if the backup and restore hierarchies of the replicas have changed, you will use your backup program to restore to an alternate location. Point the restore location to the ReplicaDir folder that is specified in the Protection task area of DPM Administrator Console for the replica volume.

  2. Perform one of the following steps:

    • If the backup was created by using DpmBackup and the protected volume GUID has not changed since backup, run DpmPathMerge to delete extraneous path information and then go to step 3.

    • If the backup was created by using DpmBackup and the protected volume GUID has changed since backup, run FsPathMerge to delete extraneous path information and then go to step 3.

    • If the backup was not created by using DpmBackup, and the backup hierarchy and the replica folder hierarchy do not match, run FsPathMerge to delete extraneous path information and then go to step 3.

    • If the backup was not created by using DpmBackup, and the backup hierarchy and the replica folder hierarchy match, go to step 3.

  3. Create a shadow copy of the restored replica. For instructions on manually creating a shadow copy, see “How to Create a Shadow Copy” (https://go.microsoft.com/fwlink/?LinkId=51982) in DPM Help.

    By creating a shadow copy at this point in the process, you can restore the volume to the file server, if necessary, before running synchronization with consistency check.

  4. Run synchronization with consistency check.

    If you must also restore the file server, do not run synchronization with consistency check until the files are restored to the file server.

    Important

    Do not run the consistency check on any replica in the protection group until all replicas in the protection group are restored.