[z/OS]

Changing the storage medium for archive logs

The procedure for changing the storage medium used by archive logs.

About this task

This task describes how to change the storage medium used for archive logs, for example moving from archiving to tape to archiving to DASD.

You have a choice of how to make the changes:
  1. Make the changes only using the CSQ6ARVP macro so that they are applied from the next time the queue manager restarts.
  2. Make the changes using the CSQ6ARVP macro, and dynamically using the SET ARCHIVE command. This means that the changes apply from the next time the queue manager archives a log file, and persist after the queue manager restarts.

Procedure

  1. Changing so archive logs are stored on DASD instead of tape:
    1. Read Planning your log archive storage and review the CSQ6ARVP parameters.
    2. Make changes to the following parameters in CSQ6ARVP
      • Update the UNIT and, if necessary, the UNIT2 parameters.
      • Update the BLKSIZE parameter, as the optimal setting for DASD differs from tape.
      • Set the PRIQTY and SECQTY parameters to be large enough to hold the largest of the active log or BSDS.
      • Set the CATALOG parameter to be YES.
      • Confirm the ALCUNIT setting is what you want. You should use BLK, because it is independent of the device type.
      • Set the ARCWTOR parameter to NO if it is not already.
  2. Changing so archive logs are stored on tape instead of DASD:
    1. Read Planning your log archive storage, and review the CSQ6ARVP parameters.
    2. Make changes to the following parameters in CSQ6ARVP:
      • Update the UNIT and, if necessary, the UNIT2 parameters.
      • Update the BLKSIZE parameter, as the optimal setting for tape differs from DASD.
      • Confirm the ALCUNIT setting is what you want. You should use BLK, because it is independent of the device type.
      • Review the setting of the ARCWTOR parameter.