Steps for defining a copy pool

Before you begin:
  1. Read the information in Planning a copy pool.
  2. Back up the SMS Source Control Data Set (SCDS).

Perform the following steps to define a copy pool.

  1. Select option P, Copy Pool, on the ISMF Primary Option Menu for Storage Administrators. This displays the Copy Pool Application Selection panel.

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  2. Supply values on the Copy Pool Application Selection panel:
    CDS Name
    Specifies the name of the SCDS where the copy pool is located. Valid values include:
    • A data set name that follows TSO naming conventions
    • The quoted word 'ACTIVE', which specifies the currently active configuration
    The CDS Name field is required. There is no default.
    Copy Pool Name
    Specifies the name of the copy pool. The maximum length is 23 alphanumeric or special characters. The first character cannot be numeric.

    The Copy Pool Name field is required. There is no default.

    Guideline: For Db2®, use the required Db2 naming convention when you name the copy pool.
    Option
    Select option 3, Define. This displays the Copy Pool Define panel.

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  3. Supply values on the Copy Pool Define panel. The SCDS Name and Copy Pool Name fields are primed by ISMF with the values that are specified on the Copy Pool Application Selection panel.
    Description
    Describes the copy pool. You can use up to 120 characters.

    Description is optional.

    Auto Dump
    Specifies with Y or N whether volumes in this copy pool are to be eligible for automatic dump processing.

    Auto Dump is a required field. The default is N.

    Dump Sys/Sys Group Name
    Specifies the 1-8 character name of the system or system group where volumes in this copy pool are to automatically dump to back-up volumes (the auto dump affinity).

    Dump Sys/Sys Group Name is an optional field.

    Dump Class
    Specifies the 1-8 character names of up to five dump classes. ISMF does no validity checking of the values you enter in these fields.

    Dump Class is an optional field.

    Number of DASD Fast Replication Backup Versions with Background Copy
    Specifies the number of fast replication backup versions of the copy pool that you want to be maintained by DFSMShsm. Valid values range from 0 to 85. You can leave the field blank. If you specify 0 (zero), DFSMShsm creates the DASD backup copy with the NOCOPY option.

    Number of DASD Fast Replication Backup Versions with Background Copy is an field optional. The default is 2.

    Each backup version that you specify requires a unique target volume for each source volume. Target volumes are defined in the copy pool backup storage group. For more information, see Defining a copy pool backup storage group.

    Recommendation: Specify a minimum of two backup versions.
    FRBACKUP to PPRC Primary Volumes allowed
    Specifies whether DFSMShsm will target Metro Mirror or Global Mirror primary volumes, if available, for FRBACKUP processing. The values are:
    NO
    Do not use Metro Mirror or Global Mirror primary volumes as FlashCopy® target volumes. This is the default.
    PN
    Metro Mirror and Global Mirror primary volumes can be FlashCopy target volumes. If the target volume is a Metro Mirror primary device, do not consider Preserve Mirror when determining FlashCopy eligibility and when performing fast replication backup.
    PP
    Metro Mirror and Global Mirror primary volumes can be FlashCopy target volumes. If the target volume is a Start of changeMetro MirrorEnd of change primary volume, a Preserve Mirror operation is preferred.
    The IBM DS8880 series and newer IBM storage systems do not support the Preserve Mirror Preferred option for Metro Mirror. If you are using one of those storage systems, and you want to preserve your disk mirror or copy, specify PR.
    PR
    Metro Mirror and Global Mirror primary volumes can be FlashCopy target volumes. If the target volume is a Metro Mirror primary volume, a Preserve Mirror operation is required.
    blank
    Is the same as NO.

    For more information about FlashCopy, Preserve Mirror, Start of changesynchronousEnd of change PPRC, also known as synchronous Peer-to-Peer Remote Copy (PPRC), and other copy services functions, refer to z/OS DFSMS Advanced Copy Services.

    For more information, see Using Metro Mirror primary volume during fast replication backup in z/OS DFSMShsm Storage Administration.

    FRRECOV to PPRC Primary Volumes allowed
    Specifies whether DFSMShsm will target Metro Mirror or Global Mirror primary volumes, if available, for FRRECOV processing. The values are:
    NO
    Do not use Metro Mirror or Global Mirror primary volumes as FlashCopy target volumes. This is the default.
    PN
    Metro Mirror and Global Mirror primary volumes can be FlashCopy target volumes. If the target volume is a Metro Mirror primary device, do not consider Preserve Mirror when Start of changedetermining Flashcopy eligibility and when performing fast replication backup.End of change
    PP
    Metro Mirror and Global Mirror primary volumes can be FlashCopy target volumes. If the target volume is a Metro Mirror primary volume, a Preserve Mirror operation is preferred.

    Start of changeThe IBM DS8880 series and newer IBM storage systems do not support the Preserve Mirror Preferred option for Metro Mirror. If you are using one of those storage systems, and you want to preserve your disk mirror or copy, specify PR.End of change

    PR
    Metro Mirror and Global Mirror primary volumes can be FlashCopy target volumes. If the target volume is a Start of changeMetro MirrorEnd of change primary volume, a Preserve Mirror operation is required.
    The IBM DS8880 series and newer IBM storage systems do not support the Preserve Mirror Preferred option for Metro Mirror. If you are using one of those storage systems, and you want to preserve your disk mirror or copy, specify PR.
    blank
    Is the same as NO.

    For more information about FlashCopy, Preserve Mirror, Start of changesynchronousEnd of change PPRCStart of change, also known as synchronous Peer-to-Peer Remote Copy (PPRC),End of change and other copy services functions, see z/OS DFSMS Advanced Copy Services.

    For more information, refer to the topic about Using Metro Mirror primary volume during fast replication recovery in z/OS DFSMShsm Storage Administration.

    FlashCopy Consistency Group
    Specifies whether DFSMShsm will use consistency groups for FlashCopy. The values are:
    N (No)
    Do not use consistency groups for FlashCopy. This is the default.
    Y (Yes)
    Use consistency groups for FlashCopy, to create data-consistent copies.
    blank
    Is the same as N (No).

    For more information, refer to the topic about Creating consistent copies using FlashCopy consistency groups in z/OS DFSMShsm Storage Administration

    FRBACKUP to XRC Primary Volumes allowed
    Specifies whether DFSMShsm will target XRC primary volumes, if available, for FRBACKUP processing. The values are:
    N (No)
    Do not use XRC primary volumes as FlashCopy target volumes. This is the default.
    Y (Yes)
    XRC primary volumes are allowed to become FlashCopy target volumes.
    blank
    Is the same as N (No).

    For more information about FlashCopy, XRC, also known as extended remote copy, and other copy services functions, refer to z/OS DFSMS Advanced Copy Services.

    FRRECOV to XRC Primary Volumes allowed
    Specifies whether DFSMShsm will target XRC primary volumes, if available, for FRRECOV processing. The specified value is considered in selecting FlashCopy target volumes for FRBACKUP processing during volume pairing. However, the L0 volumes are not verified explicitly for remote pair FlashCopy eligibility for FRRECOV processing during DFSMShsm volume pairing. The values are:
    N (No)
    Do not use XRC primary volumes as FlashCopy target volumes. This is the default.
    Y (Yes)
    XRC primary volumes are allowed to become FlashCopy target volumes.
    blank
    Is the same as N (No).

    For more information about FlashCopy, XRC, also known as extended remote copy, and other copy services functions, refer to z/OS DFSMS Advanced Copy Services.

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  4. Use the DOWN command to view page 2 of the panel.

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  5. Specify the values on page 2:
    Catalog Name
    Specifies the names of one or more valid catalogs (up to 10). Use fully qualified names, without quotation marks. Catalog Name is required if Capture Catalog Information for Data Set Recovery is R or P. There is no default.
    Capture Catalog Information for Data Set Recovery
    Specifies, to FRBACKUP processing, options for collecting catalog information. The options are:
    • R (Required). If not able to capture catalog information, fail the backup version.
    • P (Preferred). If not able to capture catalog information, issue a warning and do not fail the backup version.
    • N (do not collect catalog information).
    N is the default.
    Note: It is not uncommon for mature or highly utilized catalogs to contain logical errors. However, the catalog capture function in DFSMShsm Fast Replication requires the catalogs to be free of all errors to ensure that each cataloged data set can be recovered. If errors are present in a catalog when capture catalog information has been requested, message ARC1812I, indicating a catalog failure, may be issued. If the Required option was specified, the fast replication backup request will fail. To allow fast replication backup to succeed, you should correct all catalog errors. DFSMShsm uses the Catalog Search Interface (CSI) to capture the catalog information. Thus, if the errors in a catalog cause CSI to return with an error, DFSMShsm issues an ARC1812I message. To allow Fast Replication Backup to succeed, you should correct all catalog errors. Alternatively, specify the Preferred option, which will fail the capture catalog function but allow the FRBACKUP request to continue processing.
    Allow Fast Reverse Restore
    Indicates whether to allow recovery of a FlashCopy source from the FlashCopy target without waiting for the background copy to complete. The options are:
    • Y (Yes). Allow fast reverse restore.
    • N (No). Do not use fast reverse restore. This is the default.
  6. Use the DOWN command to view page 3 of the panel.

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  7. Specify the names of one or more valid pool storage groups. You can specify up to 256 valid pool storage group names in the fields that appear on pages 3, 4 and 5 of the Copy Pool Define panel. Pages 4 and 5 of the panel are not shown here. Use the DOWN command to display them.

    Storage Group Names is a required field. You must specify at least one storage group name. There is no default.

    Rule: You must specify all associated extend and overflow storage groups to ensure that they are included in the copy pool.

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  8. Use the END command to save and exit the panel.
Result: When you are done, you have defined a new copy pool.