Hi Brion, I see that no one else has responded . . . . . let me stir up the waters and see what shakes loose . . .
You don't inidicate the the number of nodes, db objects (files), backup rate (gb/day), etc, etc that you expect. This is key. You indicate a db of 70 gb with a full sized log - this means to me that you expect heavy db activity. For the tsm db, or for any other db for that matter, the question is how many iops do you need? The 133gb fc disk drive can probably give you around 120+ iops. I'm afraid that a 3 spindle raid 5 probably is not enough iops to run tsm instance with the activity you might have. Before my time on the storage team, Emc sold a disk subsystem to us for one of our TSM servers. It was a Clariion with all big drives. Like most disk purchases, it was configured on capacity, not i/o load. There was no way to split the drives between db/log and staging pools and have enough disk space for staging pools, or, enough spindles for db/log. The only way to make it work was to spread db/log/pools across all the spindles. NOT good . . . . actually, it worked quite well for the first year. Rick PAC Brion Arnaud <[EMAIL PROTECTED] To: ADSM-L@VM.MARIST.EDU ALPINA.COM> cc: Sent by: "ADSM: Subject: Advice needed for EMC CX500 setup Dist Stor Manager" <[EMAIL PROTECTED] .EDU> 06/06/2005 01:13 PM Please respond to "ADSM: Dist Stor Manager" Hi list, I need some guidance for setup of a brand new EMC array, equipped with 10 FC drives, 133GB each. TSM server (5.3.1) will be running on AIX 5.3. My goal is to use those disks for following purposes : - TSM DB 70 GB - TSM log 13 GB - TSM primary pools : all of the remaining space Questions : 1) EMC recommands using RAID3 for disk to disk backup -> should I create 2 raid groups : one raid5 for TSM DB and logs, one raid3 for diskpools ? 2) if using raid5 for DB and log, should I create 2 raid groups, each one using different physical disks : one for the DB, the other for the logs, or is the performance penalty neglectible if both are on the same disks ? 3) I plan using raw volumes for DB and LOGS (no TSM or AIX mirroring, I trust EMC's raid): what is the best setup : 1 big TSM volume or several smaller ? If using several volumes should they be built using different LUN's, or could I create several LV's on the same LUN. So many possibilities, that I'm a bit lost ... So if you have good experience in this domain, your help will be welcome ! TIA. Cheers Arnaud ************************************************************************ ****** Panalpina Management Ltd., Basle, Switzerland, CIT Department Viadukstrasse 42, P.O. Box 4002 Basel/CH Phone: +41 (61) 226 11 11, FAX: +41 (61) 226 17 01 Direct: +41 (61) 226 19 78 e-mail: [EMAIL PROTECTED] ************************************************************************ ****** ----------------------------------------- The information contained in this message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately, and delete the original message.