Replies, of course, will vary quite a bit depending on your situation. (As you
can tell from the number of replies!) For the most part, I see using RLVs for
the database because it is totally random access and hence the file system
overhead will only get in the way. On AIX, I tend to like file systems because
then you can use the read-ahead buffers to (potentially dramatically) increase
performance when flushing to tape.

My 2 cents.

Dan Giles
Application Specialist
Manulife Financial, Corporate
Phone: 416-341-7500 x7596





From: Jerry Caupain <j.caupain AT AMSTERDAM DOT NL> on 99/03/24 09:35 AM GMT

Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>

To:   ADSM-L AT VM.MARIST DOT EDU
cc:    (bcc: ADSM)
Subject:  ADSM performance with raw locigal volumes




Hello everyone!

I have a question.
I'm using ADSM 3.1.2.0 on AIX 4.1.4.
Someone sugested using ADSM with raw locial volumes instead of
filesystems. Said that this would increase performance.
My question is: at what point do you decide to use raw logical volumes?

Thanx in advance for your reply,

Jerry Caupain