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  3. September 2013

RE: How to handle Big Data under IBM i?

All I can offer is that a combination of 5913 controllers and 1794 SSD drives will scream.
Our R&D partition has 1962 571GB 10k RPM SAS SFF - 4 times slower
Our Upgrade partition uses the CEC 5901 and 1916 571GB 10k RPM SAS SFF - this is a dog.

I needed the space, had to sacrifice perf with the 10K RPM

The other key item is the number of access paths over the PF.
If you have say 30, that's 31 IO for every 1 insert.
We see poor perf on PF with many access paths, even with the SSD.

8205-E6C

Production LPAR R&D LPAR Upgrade LPAR

Disk drive CCIN 1794(58B4) 1962(19B3) 1916(19A3)
IOA CCIN 2-5913(57B5) 2-5913(57B5) 2-5901
RAID Type RAID-5 RAID-5 RAID-5
Number of drives under each IOA 18 24 8



-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Matt Olson
Sent: Friday, September 06, 2013 10:39 AM
To: Midrange Systems Technical Discussion
Subject: RE: How to handle Big Data under IBM i?

Things were being journaled in my SQL 2012 test.

-----Original Message-----
From: rob@xxxxxxxxx [mailto:rob@xxxxxxxxx]
Sent: Friday, September 06, 2013 9:34 AM
To: Midrange Systems Technical Discussion
Subject: Re: How to handle Big Data under IBM i?

Just to ensure that we are doing apples-to-apples, are both environments journalled?
Does the IBM i also have the "HA Journal Performance" product installed?


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

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