I/O Information Needed for Disk Magic

[Puff]

We are migrating our SAN from an EMC storage array to an IBM 8100 storage array and need to compile data for the vendor to use for the IBM Disk Magic utility. How can I get the following information from my HP server?

I/Os per sec
average I/O size
read/write ratio

The iostat command on and AIX server gives this information, but the iostat command on HP does not give the same output.

Thanks!

[Mel Burslan]

hoping that you have glance installed or at least still have your 30/60 day trial period, run glance and hit lower case "u" for I/O by disk report. It is the closest you can get to the same information in my opinion

[Juan M Leon]

try using sar -d -f /dev/dsk/c#t#d#
you will see the following

device %busy avque r+w/s blks/s avwait avserv


I hope it helps

[Tim Nelson]

Puff,

I would love to hear someday your choice for IBM8100.

We went through an RFP recently for SAN upgrades. IBM lost.

Just curious on the benefits you saw or are going to see ?

THanks !!

TIm

[Jeff Schussele]

Hi Puff - or is it just P?,

This is exactly what MeasureWare and specifically PerfView is designed for.
It'll even give you nice graphs.
Highly, highly recommended.

Outside of this - which is a $ item, then sar -d is your next, best hope. Use sa1 & cron it to gather stats over time.

Rgds,
Jeff

[Puff]

Thanks for all the input. We do not currently have glance installed so I loaded the trial version and got some good info. Also found that the vendor was able to use some of the info from the sar -d out put along with some info from our DBA team on the block size and I think we are ok for now. As for why we are going with IBM storage, it was a management decision partially based on the fact that we already have some IBM storage and it would be the same look and feel that the storage team was already accustom to. We are going to start some testing the end of Sept begining of Oct.

[Tim Nelson]

THanks for the note Puff.

Update this thread with any findings.

Don't forget points for cohearts input. ( mine was more a question than any input)

Best of luck !

[Puff]

Vendor now has info to work with.