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RE: iSeries and SSD drives



fixed

COMMON members can download the PDF of Larry's talk on Journal performance here:

https://common.confex.com/common/s12/webprogram/Session29067.html

In it, he explains the tool's impact on journal bundle size and what that does for performance.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Thursday, January 17, 2013 12:21 PM
To: Midrange Systems Technical Discussion
Subject: RE: iSeries and SSD drives

Do you have a link to it? I can't find it. All I found was a link to a book on iDeveloper that has as one of it's sections "is HA journal performance worth it?"

IBM journal performance utilities website http://www-03.ibm.com/systems/i/software/db2/journalperfutilities.html


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: Dan Kimmel <dkimmel@xxxxxxxxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>,
Date: 01/17/2013 01:00 PM
Subject: RE: iSeries and SSD drives
Sent by: midrange-l-bounces@xxxxxxxxxxxx



Check out Larry Youngren's COMMON presentations on this subject. I think
Larry holds part of the patent on the product. They figured out a way to
do fewer disk accesses, as I recall, as well as fewer network
transmissions in High Availability. If that recollection is correct, it'll
go faster even if it isn't remoted.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [
mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Mike Cunningham
Sent: Thursday, January 17, 2013 11:43 AM
To: Midrange Systems Technical Discussion
Subject: RE: iSeries and SSD drives

We do not have this product. We do not do High Availability but we do
journal every table and have full audit journaling on. Would this still
help performance?

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [
mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Thursday, January 17, 2013 11:57 AM
To: Midrange Systems Technical Discussion
Subject: Re: iSeries and SSD drives

I've moved. I wasn't that impressed. But, it may be because I found a
much bigger payback. Are you journalling? If so, do you have Resource
ID Option Feature Description
5770SS1 42 5117 HA Journal Performance

Adding this made a phenomenally huge difference. Comes with usual 70 day
key to try it out. Which, if you line up the install just right will
cover two month ends to test it.


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: Mike Cunningham <mike.cunningham@xxxxxxx>
To: "'Midrange Systems Technical Discussion'"
<midrange-l@xxxxxxxxxxxx>,
Date: 01/17/2013 11:45 AM
Subject: iSeries and SSD drives
Sent by: midrange-l-bounces@xxxxxxxxxxxx



Has anyone moved to using SSD drives and if so have you seen any
significant performance improvement by doing so? We are not in need of
additional space (running about 50%) and disk utilization (% busy) is not
extremely high (10-15%). Wondering if a plan to migrate to SSD would be
worthwhile.


Mike Cunningham
VP of Information Technology Services/CIO Pennsylvania College of
Technology


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