TMF Planning and Configuration Guide (H06.05+)

Fallback Considerations

HP NonStop TMF Planning and Configuration Guide—540136-002

A-4

Fallback Plan for Phase C

Note that this plan preserves the changes to data made during Phase C:

1. Do a clean TMF shutdown (all audited disks must be available); otherwise your HP

field service representative must hand patch to restore consistency to all audited

files.

2. Back up all audited files by using Backup/Restore (because TMF protection is lost

during this process, and the files on disk are the only copies).

3. Create a CONFIGFORM file of the TMF configuration (if not done at the last

configuration change).

4. Issue a TMFCOM DELETE TMF command (deletes all audit-trail files).

5. Fall back to an earlier RVU that does not support format 2 audit-trail files.

6. Make any needed modifications to the CONFIGFORM file, including deleting the

format 2 audit command.

7. Recreate the TMF configuration by issuing the OBEY command for the

CONFIGFORM file.

8. Issue a TMFCOM START TMF command.

9. Take a full set of TMF online dumps to reestablish file recovery protection.

Alternative Fallback Plan for Phase C

Since this alternative plan discards all changes to data made during Phase C, use this

alternative plan only if step 1 under “Fallback Plan for Phase C” cannot be achieved

and you have full TMF online dumps and audit dumps taken during Phase A or B in the

TMF catalog.

1. Create a CONFIGFORM file of TMF configuration (if not done at the last

configuration change).

2. Back up the TMF catalog and configuration files by using Backup/Restore.

BACKUP $<tape-device-name>, $<config-vol>.ZTMFCONF.*, OPEN

3. Issue a TMFCOM DELETE TMF command (deletes all audit-trail files).

Note that steps 2 and 3 can be done after falling back instead of before falling

back.

4. Fall back to an earlier RVU that does not support format 2 audit-trail files.

5. Make any needed modifications to the CONFIGFORM file, including deleting the

format 2 audit command.

6. Recreate the TMF configuration by issuing the OBEY command for the

CONFIGFORM file.