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DASD failure recovery or disaster recovery requires a database backup be available to restore the database. To prepare for these types of failures you must do regular backups preferably when MUF is quiesced or down.
Prior to any backup, take the appropriate steps to flush the pipeline buffers out to DASD before beginning. This can be controlled from the ACCESS, LOCK, or QUIESCE functions.
We recommend that you use DBUTLTY to perform database backups and restores. The BACKUP function of DBUTLTY backs up all components of a database together, ensuring that they are all in sync with each other when they are restored. Non-DBUTLTY backups can also be used as long as the pipeline is flushed to DASD first. Make sure your backup utility of choice will perform a full track image backup of the data area. Index data sets should be allocated and rebuilt for each DBID using DBUTLTY RETIX.
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