ADSM-L

Re: TDP for Domino backups contending with transactionlog archiving

2002-08-26 11:46:17
Subject: Re: TDP for Domino backups contending with transactionlog archiving
From: Mark Stapleton <stapleto AT BERBEE DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Mon, 26 Aug 2002 07:04:13 -0500
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
Love, Chris J
> We run hourly transaction log archives (with an archive threshold of 70%),
> nightly incremental backups and weekly full backups and log inactivation.

A proactive note here.

If you run hourly Domino log backups and a weekly full backup, say at
midnight on Sunday morning, imagine this scenario:

A 50MB Domino mailbox become corrupt at 0930 on Friday. You prepare to
restore said mailbox, only to discover that you have to
1) perform the restore of the last full backup (from the previous Sunday)
2) perform 129 restores of the hourly log backups
3) each restore takes 5 minutes (not at all unusual)
4) you have to replay the logs on the Domino server

You're looking at 11 hours for a 50MB restore, PLUS the replay time, for
EACH restore.

This happened to a customer of mine recently. You might want to think about
dialing back the number of times a day you do your log backups. Four log
backups a day would reduce the number of restores in the above scenario from
130 to 22.

--
Mark Stapleton (stapleton AT berbee DOT com)
Certified TSM consultant
Certified AIX system engineer
MCSE

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