We are also going to be looking at using ATA for our tsm diskpools...We
are
planning to look at STK's Bladestore box.
We are using STK tape drives and are very happy with them so we figure
we
would stick with what is working for us now.

We asked the question about expiration from disk to IBM and we were told
that there should not be any problems.  We would also be interested in
hearing any real life experiences...

thanks
Robert Burton
Enterprise Storage Network Analyst
Royal Bank of Canada
315 Front St West
Toronto, On, M5V 3A4
* 416-348-3849
* Robert.Burton AT rbc DOT com <mailto:Robert.Burton AT rbc DOT com>


-----Original Message-----
From: Talafous, John G. [mailto:Talafous AT TIMKEN DOT COM]
Sent: Friday, May 23, 2003 9:26 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: anyone using ATA disk systems


We too are considering a mass expansion of our storage pools to
implement
Disk to Disk backup via TSM. The reason is to enhance recovery times.
The
Nexsan ATABeast is under consideration.  We currently have about 40TB
backed
up to TSM storage pools. I am thinking of bringing in MANY TB of
ATABeast so
that we can discontinue migration to tape. I am curious as to what
happens
internally in TSM when you drive your storage pool utilization to, say,
80%
and hold it there?  Are there any performance penalties?  Any cautions?
Any
real world experience?  How much ATA should I consider?

TIA,
John G. Talafous              IS Technical Principal
The Timken Company            Global Software Support
P.O. Box 6927                 Data Management
1835 Dueber Ave. S.W.         Phone: (330)-471-3390
Canton, Ohio USA  44706-0927  Fax  : (330)-471-4034
talafous AT timken DOT com           http://www.timken.com


**********************************************************************
This message and any attachments are intended for the
individual or entity named above. If you are not the intended
recipient, please do not forward, copy, print, use or disclose this
communication to others; also please notify the sender by
replying to this message, and then delete it from your system.

The Timken Company
**********************************************************************

------------------------------------------------------------
This e-mail may be privileged and/or confidential, and the sender does
not waive any related rights and obligations. Any distribution, use or
copying of this e-mail or the information it contains by other than an
intended recipient is unauthorized. If you received this e-mail in
error, please advise me (by return e-mail or otherwise) immediately.

Ce courrier ilectronique est confidentiel et protigi. L'expiditeur ne
renonce pas aux droits et obligations qui s'y rapportent. Toute
diffusion, utilisation ou copie de ce message ou des renseignements
qu'il contient par une personne autre que le (les) destinataire(s)
disigni(s) est interdite. Si vous recevez ce courrier ilectronique par
erreur, veuillez m'en aviser immidiatement, par retour de courrier
ilectronique ou par un autre moyen.

============================================================