disk arms

[Chris Bipes <chris.bipes@xxxxxxxxxxxxxxx>]

Charly,

I have 3 system buses on my 720.  Two are PCI and the third is SPD which is
FULL!  Bus 1 9164 MFIOP - (load source IOP) with 2741 Disk Controller, 5 -
6717 8.58G drives, 1/4" Tape and CD ROM.

On bus 3, SPD, I have a 6512 disk controller with 16 - 6607 4G drives.  My
main backup is also on the SPD and is a 6501 Tape Controller with a 3570 B01
Magstar Tape drive.

The software we are using is IBM's Performance Tools - 5769-PT1 and 5769-PM1
Performance Management.  It shows the guideline and real usage of your disk
resources.  My biggest bottle neck is the SPD bus with the majority of the
disk arms, back up tape, 9 - 6050 workstation controllers and two 6-line
communication controllers.  I need to move the MagStar tape to bus 2 and
replace all the SPD WS controllers with PCI ones.  Then the 2-6line com
controllers get moved over and SPD goes away.

Hey anyone with used PCI WS controllers out there?

Christopher K. Bipes      mailto:Chris.Bipes@Cross-Check.com
Operations & Network Mgr  mailto:Chris_Bipes@Yahoo.com
CrossCheck, Inc.          http://www.cross-check.com
6119 State Farm Drive     Phone: 707 586-0551 x 1102
Rohnert Park CA  94928    Fax: 707 586-1884


-----Original Message-----
From: Charly Jones [mailto:charly301@hotmail.com]
Sent: Saturday, June 29, 2002 8:50 PM
To: midrange-l@midrange.com
Subject: RE: disk arms (was RE: Tips for user ASP)

How do you know that your disk arms are the problem?  What
tools do you use?  Which reports (or screens) do you look at?
Would you be willing to talk about how many disk arms are
attached to what disk controllers and whether you have
separate disk pools.  I would like to continue this
discussion if anyone is interested.