TMF Operations and Recovery Guide (G06.24+)

Occasional Operations
HP NonStop TMF Operations and Recovery Guide—522417-002
3-11
Adding New Data Volumes
Adding New Data Volumes
You use ADD DATAVOLS commands to add data volumes to your TMF configuration.
You can add data volumes any time after issuing a START TMF command. To be
added as a data volume, the disk must be up but not already configured as either an
active-audit volume or a data volume.
When you attempt to add a data volume, TMF recognizes if the volume was part of a
previous TMF configuration and might contain files that were in a potentially
inconsistent state when the volume was last shut down. Normally, the ADD
DATAVOLS command fails for such volumes.
By reissuing the command with the IGNOREPREVIOUSCONFIG option, you can force
the volume to be added even if TMF suspects it might contain inconsistent data. If you
do this, however, the volume recovery process cannot repair any inconsistencies, even
if you return the data volume to the previous configuration environment.
By default, all configured data volumes are automatically started:
•
When you start TMF
•
When the volume comes up after a volume failure (if TMF is started at the time)
Data volumes automatically stop processing audit information when you stop TMF.
Specifying Recovery Mode
When you add a data volume, you can specify its recovery mode.
Setting the recovery mode to ONLINE means that the audit-trail files that would be
needed to recover the data volume remain on the active or overflow-audit volumes:
this way, the volume recovery process does not have to restore audit-trail files from
archive media. Using online mode keeps audit-trail files pinned on the active-audit trail
longer, which means there must be sufficient space to hold the files until they are no
longer needed for volume recovery.
Setting the recovery mode to ARCHIVE means that the audit-trail files that would be
needed to recover this data volume are copied to tape or disk. Archive mode is
allowed only if the audit trail for this data volume is configured for audit dumping. Using
Note. TMF is shipped from the factory with the $DSMSCM disk volume configured as a TMF
data volume. Although you should not remove $DSMSCM as a TMF data volume, you are free
to add other TMF data volumes to the configuration. See also the information about the
preconfiguration of active-audit volumes under Adding Another Active-Audit Volume
on
page 3-8.