Hi,

If you have fibre connected LTO drives, one really simple way is to connect
to the web console of the switch and monitor the performance of the ports on
the switch.  This isn't easily automatable, but it is a very accurate
representation of what you are seeing in terms of throughput.

Michael Wheelock
Integris Health of Oklahoma

-----Original Message-----
From: Shawn Price [mailto:sprice AT MORRISONHOMES DOT COM]
Sent: Tuesday, July 08, 2003 12:36 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: LTO throughput - real world experiences


What is the best way to determine what your throughput is for each process?
Are you just going by the activity log?

Thanks!

Shawn

>>> cmurphy AT IDL.STATE.ID DOT US 07/08/03 1:34 PM >>>
>I'm curious as to what kind of MB/sec throughput people are seeing with
TSM
and LTO drives.

It varies drastically for us based upon the objects being moved, of course.
10-15MB/s / drive is normal for us overall.

>How many MB/sec does a migration process produce in your environment?

We achieve about 12-14MB/s per drive when performing migration.

>Does anyone have any DB's streaming directly to LTO and some figures?
Appreciate any feedback

Yes, our Exchange boxes stream nicely at about 15MB/s per drive.

HTH!

Chris Murphy
IT Network Analyst
Idaho Dept. of Lands
Office: (208) 334-0293
cmurphy AT idl.state.id DOT us
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