Copying retention sets to tape storage

You can protect data in a retention set by copying the data to tape storage.

Before you begin

Define at least one tape library to the server by using the DEFINE LIBRARY command. Provision enough tape drives and scratch volumes to meet your storage requirements.

About this task

To store retention sets on tape, you must define a retention storage pool. The retention storage pool represents 3592 tape devices, LTO tape devices, or StorageTek drives, and can be used only for retention set data.

Important:

A retention storage pool contains retention set data only. You cannot move data between retention pools and non-retention storage pools, which helps to ensure that retained data is not mixed with data that might be required for operational recovery.

When a retention set is created from a retention rule, the retention set is initially created in-place in primary storage. With in-place retention, data objects that are backed up in retention sets are retained in primary storage and tracked in the server inventory. With retention to tape, retention sets are initially created as in-place retention sets, but can be copied to tape for offline storage.

The operation to copy the retention set to tape is controlled by storage rules. A storage rule to copy the retention set to tape is created automatically when you specify a retention storage pool as the destination for the data when you define the retention rule. This storage rule runs once each day to copy retained data from primary storage to the retention storage pool. If the retention set is not fully copied to tape during the processing window, copying is resumed the next time the retention-copy storage rule runs.

Procedure

  1. Define a new retention storage pool. This retention storage pool is a dedicated storage pool for storing the retention set data on tape.
    1. On the Operations Center menu bar, click Storage > Storage Pools.
    2. On the Storage Pools page, open the Add Storage Pool wizard by clicking + Storage Pools.
    3. On the Type page of the Add Storage Pool wizard, select the Retention option and click Next.
    4. Follow the instructions in the Add Storage Pool window to specify the storage pool name, the schedule for the storage rule to run, and the tape device class.
      Tip: Alternatively, to define a retention storage pool by using the command-line interface, complete the following steps:
      1. Create a retention storage pool by issuing the DEFINE STGPOOL command and specifying the POOLTYPE=RETENTION parameter setting. When you create the retention storage pool, an associated retention-copy storage rule is automatically created. The retention-copy storage rule is defined with the ACTIONTYPE=RETENTION parameter setting and has the same name as the retention storage pool.
      2. Review the settings for the storage rule and update parameters, such as STARTTIME, MAXPROCESS, and DURATION according to your requirements. To update storage rule settings, issue the UPDATE STGRULE command and specify your required changes.
    The retention-copy storage rule runs daily at the specified start time to copy retained data from primary storage to the retention storage pool.
  2. Specify the retention storage pool as the destination for the retained data.
    1. On the Operations Center menu bar, click Services > Retention Rules.
    2. To create a retention rule from scratch, on the Retention Rules page, click +Create Rule.
    3. On the Create Retention Rule page, complete the fields. To enable retention to tape, specify the name of a retention storage pool in the Retention pool field and click Create.
      Tip: Alternatively, you can define or update a retention rule by using the command line. To define a retention rule, issue the DEFINE RETRULE command or to update an existing retention rule, issue the UPDATE RETRULE command.

      To enable retention to tape, specify the DESTINATION parameter and enter a retention pool name. If you do not specify the DESTINATION parameter, the retention set remains in-place on primary storage.

  3. Monitor the retention set copy operation. When a retention storage rule starts, one or more processes to copy the retained data to tape run in the background. All of these processes are managed by a single job.
    Tip: The job to copy the retention set to tape and the job to create the in-place retention set are the same job and have the same job ID. This job ID is also the same as the retention set ID.
    1. On the Operations Center menu bar, click Services > Retention Sets.
    2. To monitor the progress of the retention copy operation, view the information in the Status and Size columns.
      Tip: Alternatively, you can monitor the status of the copy operation by using the command line.
      • To monitor the status of the job, issue the QUERY JOB command. You can issue the following commands on the retention copy job:
        • INTERRUPT JOB
        • RESUME JOB
        • TERMINATE JOB
      • To view messages about all activity for a specific job and to help troubleshoot any errors, issue the QUERY ACTLOG command.
      • To show how much space is occupied in the retention storage pool, issue the QUERY OCCUPANCY command.

Results

Retention sets are copied to tape storage. You can store the tapes onsite or move them to offsite vaults, which are designed to provide long-term, secure storage.