Haven't actually run or seen one with a 3 disk RAID config. Of course I'd
much prefer 4 disks with the parity striping spread over 4 arms instead of
the 2 arms a 3 disk config uses, but sometimes keeping cost down is very
important (yes you're right - that RAID card add a chunk to the config -
so another choice would be a 4 disk Mirrored config). I can't imagine a 3
disk RAID-5 config performing worse than a 2 disk Mirrored config.
...Neil
"Jim Franz" <franz400@xxxxxxxxxxxx>
Sent by: midrange-l-bounces@xxxxxxxxxxxx
To
"Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
cc
Subject
Re: very low end i5 performance
Neil - we had a prev posting approx week ago about 3 disk raid
setups that seemed to be a performance problem, any comment?
Raid card and addtl disk adds over 30% to cost of box.
jim
----- Original Message -----
From: "Neil Palmer/DPS" <neilp@xxxxxxxxxxx>
To: "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
Sent: Tuesday, October 12, 2004 3:32 PM
Subject: Re: very low end i5 performance
> Seems reasonably fast, but not really satisfied with disk performance -
> which as you may expect is a bit of a bottleneck. Towards the end of an
> IPL especially the disk utilization is pegged at 100% for maybe 10
> minutes. I woudl STRONGLY advise adding at least one additional disk
and
> configuring for RAID-5, that way user data will be spread over 3 disk
arms
> instead of just one.
>
> Users seemed pretty happy with it (it wasn't that bad once the IPL
> completed in the background, but then they were coming from a model 200
> with 16MB of memory running V3R2).
>
> ...Neil
>
>
>
>
> "Jim Franz" <franz400@xxxxxxxxxxxx>
> Sent by: midrange-l-bounces@xxxxxxxxxxxx
> 2004/10/12 14:05
>
>
>
> To
> <MIDRANGE-L@xxxxxxxxxxxx>
> cc
>
> Subject
> very low end i5 performance
>
>
>
>
>
>
> Anyone care to comment on experiences
> with very low end i5 520
> Express Edition 1 w/500cpw,
> 1 gig memory
> 2 - 35 gig drives mirrored.
> twinax console
> 30 gb 1/4 in cartridge tape
> Would be running small office (10-20 users), webfaced rpg application,
> as well as Apache webserver.
> tia
> jim franz
h
