Prerequisites for creating new pubsets from mirror pubsets

The following conditions must be met to permit the pubset to be generated:

• To ensure that the disks of the new pubset have a consistent status, the pubset must have the status INACCESSIBLE when the replication is active.

  If the mirror pubsets are already accessible (in other words separated or activated) and the VSNs of the accessible copies comply with double-point notation, the status of the pubset is irrelevant.

• Both SF and SM pubsets are processed as a whole. For SM pubsets, the renaming rule must be stored in a parameter file for each volume set (see the SET-NAME-OF-NEW-VOLUMESET statement). Volume sets in the DEFINED-ONLY status may also exist.

• All required disks must be available on the system on which the pubset is to be generated.

  • If the mirror pairs are not already accessible separately, then all the disks of the source pubset with the corresponding disk copies are concerned; when you are working with Snap functions the corresponding number of free virtual disks must be available.

  • If the mirror pairs are already accessible separately, only the copies of all disks in the pubset with VSNs in double-point notation are required.

• PVSREN must be able to exclusively reserve all the disks required.

• No disks with the target VSNs may exist.

  Example: Pubset XYZ is to be generated from the mirror pubset ABC.

  The pubset ABC consists of the disks ABC.00 through ABC.05.
  In this case the disks XYZ.00 through XYZ.05 may not already exist

• If one or more MRSCAT entries with the target catalog ID(s) exist, none of them may have the status ACCESSIBLE. If all these MRSCAT entries have the status INACCESSIBLE, renaming takes place after consultation via the message PVR0205.

• When pubsets are created from mirror pubsets, the copy may not be separated or activated, or it must be named in double-point notation. PVSREN does not operate on separated copies that have the catalog ID of the original pubset or a new catalog ID.

• When SM pubsets are created from mirror pubsets, the original SM pubset may not contain a volume set with the status DEFECT.

• The length of the catalog IDs of the source pubset and the pubset to be created must be identical.

• If MRSCAT entries exist with catalog IDs of the pubset that is to be created and/or of one or more of its volume sets, these catalog IDs should only be used when creating a pubset if the MRSCAT entries concerned are no longer needed. PVSREN deletes these MRSCAT entries and creates them again.