ADSM-L

ADSM database handling basics

1996-11-27 14:52:47
Subject: ADSM database handling basics
From: Zvi Bar-Deroma <zvika AT AESERV.TECHNION.AC DOT IL>
Date: Wed, 27 Nov 1996 19:52:47 +0000
I am just starting with ADSM and have to plan its database. From the little
I already know I understand the database is very crucial in ADSM's operation
and care must be taken to protect it. From the FAQ (in ADSTAR's site) I
understood that ADSM can backup its database (although intuitively this
seems far from being trivial), and that it can implement mirroring by
itself (unrelated to the OS'es, AIX in my case, mirroring).

Am I (more or less) correct with the above ?

Nonetheless, I don't feel confident in having ADSM backup its own db, and
my idea was to have its db reside on the rootvg, which will be a 4.3 GB
disk with mirroring (2 copies). That way, occasional mksysb (or sysback)
backups should leave me on a quiet secure track. I am not sure of the db size,
but please read about in later. Does that sound like a reasonable strategy,
at least to begin with ?

As for db size, any rule of thumb for calculating its size ? For the first
year, I think I'll have about 20-30 GB of disk to backup, with <= 20 clients
and between 200,000 and 300,000 files (total). On the average I'd like to have
3 copies of each file. Can anyone give me a fair assumption of the required db
size ? I guess that's it's (mainly) a function of the # of files and # of
copies of each file.

TIA,
/Zvika

Zvika Bar-Deroma
Systems and Network manager                       Phone: (+972)-4-829-2706
Faculty of Aerospace Engineering,                 Fax  : (+972)-4-823-1848
Technion                                          Home phone:
Haifa 32000                                              (+972)-4-823-5562
Israel

Internet      :   zvika AT aeserv.technion.ac DOT il

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