Don,
It's a Mylex 350 with 64Mb cache (currently all logical drives set
for write-thru). It occurs to me now to mention that although eseutil has
sometimes ended prematurely with what I would regard as hardware related
errors, Exchange itself runs fine, even when I select masses of mailboxes
and delete them.
Roger
-----Original Message-----
From: Don Ely [mailto:[EMAIL PROTECTED]]
Sent: 20 November 2001 14:56
To: Exchange Discussions
Subject: RE: Eseutil
Eseutil is well known for beating the hell out of RAID controllers. If you
have a poor one, eseutil will be the first to tell you. What kind of RAID
card is it? What kind of cache does it have? Does it support a really
heavy load of disk I/O's?
-----Original Message-----
From: Roger Mackenzie [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, November 20, 2001 6:49 AM
To: Exchange Discussions
Subject: Eseutil
Folks,
I'm interested in peoples' experience with eseutil, especially
integrity and defrag modes.
I'm commissioning new hardware and, because of some Mylex controller
trouble at the start, I'm restoring EXS 5.5 SP3 (plus store fix) stores and
directory and then running eseutil defrag and integrity checks. Thereafter
I'll delete hundreds of mailboxes and then again defrag and run integrity
checks. The whole point is to generate a lot of disk activity to stress the
disk subsystem. The results are not too satisfactory as I'm getting a
(admittedly low) level of read failures and sometimes checksum failures.
Because all this takes a great deal of time due to the size of the database
and the restore/defrag etc times I'm not yet getting a picture which is
sufficiently clear to allow me to be absolutely certain it is hardware alone
which is the culprit. Suggestions that eseutil is flawed have been aired as
a distraction from the hardware being the culprit.
I'm wondering if anyone has any views of this type of thing compared
with real life operations. The difficulty I'm in is convincing the supplier
I've got a low level hardware problem, not a software problem.
Any experiences you can relate would be appreciated.
Regards, Roger Mackenzie (Glasgow University)
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