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08875 - Parallel Backup with 3 Tapes
rdisp/max_wprun_time - Maximum work process run time BAL_S_LOG - Application Log: Log header dataThis documentation is copyright by SAP AG.
Parallel Backup with 3 Tapes
We backup our MIRROR-DB 400GB every night
We've been using Lakeview MIMIX for about 15 months now and it's a BEAUTIFUL
THING!
Even eliminated ALL downtime during our V4R5 to V5R1 upgrade
Doreen
-----Original Message-----
From: Lehnardt, Franz [mailto:franz.lehnardtZunielektro.de]
Sent: Tuesday, January 14, 2003 9:30 AM
To: DoNotReply@consolut.eu
Subject: AW: Parallel Backup with 3 Tapes
Hello Volker,
we already have tested Data Mirror (HA Suite) and Lakeview (MIMIX) about two
years ago.
Both products were not able to handle the workload at that time, don't ask
me why. Data Mirrors SE's spent more than 6 month trying to run HA Suite
with an acceptable performance - they failed. Even the synchronisation of
the two DBs took more then 2 days, not to mention the tens, sometimes
hundreds of journalreceivers which still were to transmit... So we deceided
that the market wasn't (isn't??) ready for perfromant HA software.
According to your last sentence: It's more a question of that we need our
tape drives for other backups too, so we don't want to block it for 10-12
hrs.
Just for curiousity - what tool are you running?
Regards,
Franz
-----Ursprüngliche Nachricht-----
Von: volker.fleischmannZrockwool.de
[mailto:volker.fleischmannZrockwool.de]
Gesendet am: Dienstag, 14. Januar 2003 14:21
An: DoNotReply@consolut.eu
Betreff: AW: Parallel Backup with 3 Tapes
Hi Franz,
instead of a backup of your productive database you can install a
high
availibility product and do the daily full backup from the
mirror-database
(we are using this feature for many years).
So you do not loose performance on the production server.
> Beste Grüsse / best regards
>
> Volker Fleischmann
>
> Telefon: +49 2043 408 290
> Fax: +49 2043 408 610
> Mail to: volker.fleischmannZrockwool.de
>
-----Ursprüngliche Nachricht-----
Von: Lehnardt, Franz [mailto:franz.lehnardtZunielektro.de]
Gesendet: Dienstag, 14. Januar 2003 12:54
An: DoNotReply@consolut.eu
Betreff: AW: Parallel Backup with 3 Tapes
Hi Alberto,
sorry - yes, we use BRMS V5R1 to perform a full SAVLIB. At the
moment the
backup job runs 10-11 hours every night. Because of the size of our
PRD
database (760 GB) we don't have space left to copy it to a SAVF.
2 years ago we have discussed the advantages and disadvantages of
incremental backups on this forum ( I guess this is what you mean
with
"...part of data...") and I recall that Volker recommended not to
use
incremental backup because restoring a system from a full backup is
much
easier than the other way. Especially that receiver thing must be a
highly
complicated process according to IBMs support staff...
Regards,
Franz
-----Ursprüngliche Nachricht-----
Von: Peri Alberto [mailto:vw000644Zfapim.it]
Gesendet am: Dienstag, 14. Januar 2003 11:52
An: DoNotReply@consolut.eu
Betreff: R: Parallel Backup with 3
Tapes
Hi Franz,
How use the tape??? With BRMS???
Have you thinked to make xxx.SAVF during night to place on
tape
during day??? (only if you have space and only for a part of data to
save so
you can reduce the night time as you require!!)
Regards
Alberto Peri
Euroinvest Group
-----Messaggio originale-----
Da: Lehnardt, Franz [mailto:franz.lehnardtZunielektro.de]
Inviato: martedì 14 gennaio 2003 11.37
A: 'SAP on System i (E-Mail)'
Oggetto: Parallel Backup with 3 Tapes
Hi group,
last weekend we attached a third 3590 to our PRD server to
reduce
the runtime for backup of our PRD system. We hoped to save at least
15-20%
runtime, but nothing changed at all - the backup still runs as long
as with
2 units.
So is there anyone out there already running backups with
more than
2 tape units and if so, what are your experiences?
Thanks for any advise.
Mit freundlichen Grüßen / Best regards,
Franz Lehnardt
AS/400 Administration
Unielektro Fachgrosshandel GmbH & Co. KG
Eschborn, Germany
Tel. +49 (0) 6196 477-360
mailto:franz.lehnardtZunielektro.de
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