TMF Planning and Configuration Guide (H06.05+)

Doing an Initial Configuration
HP NonStop TMF Planning and Configuration Guide—540136-002
2-7
Example 2: Medium-Scale Database, 24-Hour Work
Day
Given the system, application, and database just defined, you would configure TMF by
using the following sequence of commands:
25>TMFCOM
TMF 40> ADD AUDITTRAIL MAT, FILESIZE 72, FILESPERVOLUME 3, &
>>>ACTIVEVOL $TMFAUD, OVERFLOWVOL $TMFAUD, &
>>>RESTOREVOL $TMFAUD
TMF 41> START TMF
TMF 42> ADD DATAVOLS ($DATA1, $DATA2, $DATA3)
TMF 43> ALTER AUDITDUMP MAT, COPIES 2 SERIES
TMF 44> ADD TAPEMEDIA (TMF001, TMF002, TMF003, TMF004, &
>>>TMF005, TMF006, TMF007, TMF008, TMF009, TMF010, &
>>>TMF011, TMF012, TMF013, TMF014, TMF015, TMF016, &
>>>TMF017, TMF018, TMF019, TMF020, TMF021, TMF022), &
>>>LABEL ON!, DRIVE $TAPE, STATUS SCRATCH
Example 2: Medium-Scale Database, 24-Hour Work Day
Assume you have a large batch application to be protected by TMF, and it has the
following major characteristics:
•
It has a 750-gigabyte database occupying 25 data volumes (named $DATA1
through $DATA23); the data is somewhat evenly distributed among the 25 volumes
(approximately 30 gigabytes on each volume).
•
It averages approximately 20 transactions each second over a 24-hour day with an
audit-generation rate of approximately 22 kilobytes for each transaction (translating
to approximately 20 audit-trail rollovers each day).
Assume the system has the following equipment available for use by TMF:
•
Three disk drives (named $AT1, $AT2, and $AT3) that can be used for audit-trail
functions; $AT1 and $AT2 will be used as active-audit volumes and $AT3 will be
used as both the overflow-audit volume and the restore-audit volume
•
Two magnetic tape drives (named $TAPE1 and $TAPE2)
Since the average daily audit-generation rate greatly exceeds the capacity of one tape
cartridge, we will use 2000 megabytes as our audit-trail file size.
Approximately 20 audit dumps occur each day. Assume the operators will dump all 25
data volumes on a volume basis once each week (three or four each day). By default,
the TMF catalog maintains three generations of the online dumps and all of the audit
Note. For this sample TMF environment, you would ultimately have to add at least 114 scratch
tapes to the TMF catalog using ADD TAPEMEDIA commands such as the one shown above (3
volumes * 6 tapes for each volume * 1 copy * 4 generations for the online dumps plus 1 tape for
each audit dump * 2 copies * 21 days for the audit dumps).