Markus,
Good catch!
I did hear, though, that due to the file system design, perhaps pre-formatting
volumes on AIX will cause fragmentation rather than preventing it. I'm not an
AIX guy but would hope that someone who is would weigh in here.
Thanks,
Kelly J. Lipp
VP Manufacturing & CTO
STORServer, Inc.
485-B Elkton Drive
Colorado Springs, CO 80907
719-266-8777
lipp AT storserver DOT com
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Markus Engelhard
Sent: Tuesday, December 05, 2006 12:25 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Reply: copypools on disk on AIX?
Hi all,
just my two cents on file-deviceclass: I agree with Kelly that Volumes should
be predfined to avoid fragmentation. In addition I would very strongly
recommend running the define volume command with a wait=yes to format them
sequentially. While this looks a pain, volumes will be formatted without
fragmentation one would get formatting several volumes at a time.
Pre-formatting volumes may take it´s time (to be percise, formatting on Sun
Solaris can be very slow, while W2K3 is rather quick due to differences in the
filsystem!), but you just run it once and it can be run in the background.
Regards,
Markus
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