Re: Create More LUN in ASP

roberto thanks for your help. Here is wrkdsksts to help explain.

Size % I/O Request Read Write Read Write %
Unit Type (M) Used Rqs Size (K) Ross Ross (K) (K) Busy
1 6B22 668106 58.4 90.3 6.1 9.7 80.6 7.2 6.0 4
2 6B22 381774 6.3 .0 .0 .0 .0 .0 .0 0

I think adding more disks will help with IO my IT manager thinks it will make most of the 600g go unused so he wants to move our main home written application library to an ASP2 with more disk. Or do we just leave it as is and not get the best performance.

----- Original Message ----- From: "Karl Lauritzen" <klauritzen@xxxxxxxxxx>
To: "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
Sent: Sunday, May 06, 2012 3:40 PM
Subject: Re: Create More LUN in ASP

we have it on a SAN with FC
sorry I did not explain it right
The Bp put 636 g for unit 1 and 300 g to unit 2 so yes arm access is it

Can we just add more drives like 6 or 8 73 g drives and use straspbal to solve or have to create an asp 2



Roberto José Etcheverry Romero <yggdrasil.raiker@xxxxxxxxx> wrote:

LUN are Logical units, you dont need more than 1 AFAIK. the problem
most probably is that you have only 1 disk ARM therefore limiting the
total IOps of the system. Are you using the 2 onboard disks? Does the
blade have SAS or HBA cards? can you hook it up to a storage via FC,
SAS or iSCSI? With more hard info we could see where the botleneck
lies...

best regards,
Roberto

On Sat, May 5, 2012 at 8:48 PM, Karl Lauritzen <klauritzen@xxxxxxxxxx> wrote:

We have a V7R1 i5 running on a blade. 2 LPAR (test and dev) Once we went live with users we noticed it was a bit sluggish. We have since found out the BP configured 1 LUN for 600GB of disk in ASP 1 in Dev LPAR.

Can we add more LUN to ASP 1?
Can we add more disk to ASP 1 and add more LUN? How?
Seems to me you could add more disk and more LUN as once you ran low on disk you would have to add disk anyway.

Karl Lauritzen
NLASCO
Waco TX

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