TMF Planning and Configuration Guide (H06.05+)

Configuring TMF for Backup and Recovery

HP NonStop TMF Planning and Configuration Guide—540136-002

5-9

Turning Audit Dumping On or Off

When the audit dump capability is turned on for an audit trail and is enabled, TMF

automatically initiates a dump of the audit trail to tape or disk whenever an audit-trail

file becomes full. Audit dumps are necessary for file recovery; they are also necessary

for volume recovery when data volumes use the archive recovery mode.

By default, the audit dump feature is turned on.

There are two ways to turn the audit dump capability on or off:

•

When initially configuring an audit trail, you can turn audit dumping on or off by

including an AUDITDUMP ON or AUDITDUMP OFF option in the ADD

AUDITTRAIL or ALTER AUDITTRAIL command. (If you do nothing with the audit

dump configuration when you initially configure an audit trail, the default setting,

ON, is used for that audit trail.)

•

Later, you can include an AUDITDUMP ON or AUDITDUMP OFF option in an

ALTER AUDITTRAIL command to reverse the default or previously configured

setting. To change the AUDITDUMP option to OFF, TMF must be started.

Setting the audit dump value to off for an audit trail means that files in the audit trail are

deleted when they become filled and are no longer needed by TMF. Do not turn off the

audit dump attribute for any audit trail unless you no longer want to retain audit-trail

files for possible TMF recovery operations.

Pausing and Resuming Audit Dumping

When the audit dump feature is turned on for one or more audit trails, you can pause

(disable) or resume (enable) the feature for all audit trails. In emergency situations, the

disable abrupt option allows you to pause audit dumping immediately, without

completing any audit dumps that are currently in progress.

You enable the audit dumping feature by using the ENABLE AUDITDUMP command.

You disable it (in the ordinary way or abruptly) by using the DISABLE AUDITDUMP

command.

Note. If the audit dump capability is off, the level of protection is substantially reduced: TMF

still does volume recovery, but it cannot do file recovery, and online dumps are useless.

Note. The following restrictions apply to turning audit dumping on and off:

•

If you do not turn on audit dumping for the master audit trail, you cannot turn it on for any

auxiliary audit trail.

•

You cannot turn audit dumping off for the master audit trail if it is turned on for one or more

auxiliary audit trails.

•

Before you can enable audit dumping for an audit trail, you must specify one or more

restore volumes for that audit trail.