Hmm...
All of our disk storage pools are larger than 2 GB and have large
files enabled because we do see files larger than 2GB come in from
clients...
I'm quite sure I'm not going to want to slice up a 36Gb disk into 18
2GB filesystems just to use direct I/O. I think the drive head contention
would eat me alive.
I'm not sure where they expect this functionality to be used when
they have those 2 limitations on direct I/O...
Ben
-----Original Message-----
From: Paul Zarnowski [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, May 29, 2002 6:54 AM
To: [EMAIL PROTECTED]
Subject: Re: allocating disk volumes on RAID5 array
I'm curious if anyone feels that the new AIXDIRECTIO option in TSM 5.1
affects their opinions about how to utilize disk for storage pools. TSM
5.1 also has an Async I/O option (AIX). For more info, refer to
<http://www.redbooks.ibm.com/redpieces/pdfs/sg246554.pdf>, starting at
about page 107. The AIXDIRECTIO option does not work with
large-file-enabled filesystems, so the filesystem must be 2GB or
smaller. This option bypasses VMM file cache.
