Administrator's Guide


Using Copy Storage Pools to Improve Data Availability

By using copy storage pools, you maintain multiple copies of files and reduce the potential for data loss due to media failure. If the primary file is not available or becomes corrupted, TSM accesses and uses the duplicate file from a copy storage pool.

Example: Simple Hierarchy with One Copy Storage Pool

Assume that you have two primary storage pools: one random access storage pool (DISKPOOL) and one tape storage pool (TAPEPOOL, with device class TAPECLASS). Files stored in DISKPOOL are migrated to TAPEPOOL. You want to back up the files in both primary storage pools to a copy storage pool.

To schedule daily incremental backups of the primary storage pools, do the following:

  1. Define a copy storage pool called COPYPOOL, with the same device class as TAPEPOOL, by issuing the following command:
    define stgpool copypool tapeclass pooltype=copy maxscratch=50
    

    Notes:

    1. Because scratch volumes are allowed in this copy storage pool, you do not need to define volumes for the pool.

    2. All storage volumes in COPYPOOL are located onsite.

  2. Perform the initial backup of the primary storage pools by issuing the following commands:
    backup stgpool diskpool copypool
    backup stgpool tapepool copypool
    

  3. Define schedules to automatically run the commands for backing up the primary storage pools. The commands to schedule are those that you issued in step 2.

    To minimize tape mounts, back up the disk storage pool first, then the tape storage pool.

    For more information about scheduling, see Chapter 16, Automating Server Operations.


[ Top of Page | Previous Page | Next Page | Table of Contents | Index ]