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Our current 520 has only 2gb memory. Think that's why i Navigator is slow?
:)



On Tue, Oct 22, 2013 at 2:49 PM, <rob@xxxxxxxxx> wrote:

V5R2 will support a minimum of 70GB as a load source. Since you hold on
to your systems for quite some time I think I would go for something even
bigger. Probably the 280s. Maybe the 140's. Since you are raiding you
are going to want them all the same size. It's cheaper to add more 280's
than it is to add another 5887, or to rip out smaller drives and replace
with larger drives when you hit a capacity boundary.
With your low disk performance requirements you just may get by with 5
drives (with the 5th one for hot spare). Remember one drive is lost to
raid striping. Four 280's will look like four 210's after the raid
striping.
If you have plenty of slots available it's always easier to expense more
disk in if it turns out you have a disk performance issue.
I also agree that spending money on the memory is a good idea. We have
one machine where we can't physically add more memory and we're chasing
quotes on an upgrade. If there's even a remote possibility that WAS
and/or Domino may be on your horizon get memory. Had a consultant today
who couldn't get a WAS installation to even work since it didn't have
enough memory and I had to dlpar more memory out of a different lpar.
Wouldn't be the first consultant I've had to do this with for a WAS
installation. The other one had us.ibm.com in his email address.


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: Jeff Crosby <jlcrosby@xxxxxxxxxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Date: 10/22/2013 01:00 PM
Subject: Disk requirement (performance-wise) on a Power 7 replacing
a System i 520
Sent by: midrange-l-bounces@xxxxxxxxxxxx



All,

I've asked a BP for a quote on a Power 7 to replace our System i 520,
thinking that maybe the 3 year cost wouldn't be much more than the
maintenance alone on the System i. Haven't received the quote yet, so I
don't know if I'm delusional or not.

Anyway, the System i has 16 ~36gb drives at only 20% capacity. IOW we
only
have 98gb data on the System i. Isn't the smallest drive available on the
Power 7 larger than that? At a minimum I would want 4 drives, raided,
with
a 5th as a hot spare. Any way to tell the performance, disk-wise, of that
system as compared to our current system?

Thanks.

--
Jeff Crosby
VP Information Systems
UniPro FoodService/Dilgard
P.O. Box 13369
Ft. Wayne, IN 46868-3369
260-422-7531
www.dilgardfoods.com

The opinions expressed are my own and not necessarily the opinion of my
company. Unless I say so.
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