Re: iSeries and SSD drives

Sorry - wrong name - we are Power System

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of DrFranken
Sent: Thursday, January 17, 2013 12:42 PM
To: Midrange Systems Technical Discussion
Subject: Re: iSeries and SSD drives

Since iSeries doesn't support SSDs it's a mute point for you. You need a Power System with POWER6 or newer processor to support SSDs.

I have several customers with POWER7 machines that have SSDs including two with ONLY SSDs. Zippity Do Da Do they move! IPLs are amazingly fast, PTFs and Backups are too.

However to honestly say how much the SSDs helped with their performance is difficult as both customers moved from previous generations of Power Systems so they also got Ghz, processor improvements, and more and faster memory too.

John is right, it's truly best to at least understand where your performance issue is. Journaling has been mentioned and DB indices both can be very significant. First, understand!

- Larry "DrFranken" Bolhuis

www.frankeni.com
www.iDevCloud.com
www.iInTheCloud.com

On 1/17/2013 12:20 PM, John Jones wrote:

Sometimes its easier and faster to throw hardware at a performance
issue but as a rule, application, database, and OS tuning should occur
before making your reseller happy. Even if disks are overly busy, it
may be a sign of poor app design or index management more than
insufficient disk performance.

On Thu, Jan 17, 2013 at 11:08 AM, <rob@xxxxxxxxx> wrote:

Ok, so now that you're talking tools, you may as well look at SSD
analyzer.
http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/PRS3780

http://archive.midrange.com/midrange-l/201111/msg00849.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: Gary Thompson <gthompson@xxxxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>,
Date: 01/17/2013 11:51 AM
Subject: RE: iSeries and SSD drives
Sent by: midrange-l-bounces@xxxxxxxxxxxx



Mike,
With 15% Disk utilization, maybe your best $ value is i Series Nav
index advisor.
Seems you are currently "running from memory" primarily and a few
well-placed indexes could give good results on any "slow"
jobs/reports

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [
mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Mike Cunningham
Sent: Thursday, January 17, 2013 9:46 AM
To: 'Midrange Systems Technical Discussion'
Subject: iSeries and SSD drives

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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