The recommended way to do a DR test is to take your copy pool (or a subset, or a special-set) to another machine (NOT YOUR PRODUCTION box); if you decide to use DRM (even if not) follow the instructions found in the Admin. Guide -- this is about the most well-written piece of info across all the books, even if you are not using the DRM component, it will teach you the essential parts of performing a successful DR exercise.
Using a backup of your production TSM db, along with the other essential config files, you install TSM and load the db on an alternate (DR-test) machine; if you're platform- and TSM-savvy, you could just install it on the same system and even use the same library, to do an informal, in-house test. It's this alternate system that gets the "DR" treatment of marking volumes destroyed, etc; but, proceeding down this path without first ensuring your backups are being done successfully will only lead to disappointment... as putting the cart in front of the horse. Meanwhile, Sun (their website, doc or PS folks) can help you with the spec.s needed to configure your solution; specifically, total system configuration can be thrown off balance by inadequate distribution of the component loads -- especially, NIC's need healthy sizings of CPU power (as in Gigabit-E'net cards). JBOD is great, but, in some cases you just need protection -- consider raid-0+1 (or, go straight to tape for data that's mission-critical and cannot simply be re-backed up the next night). Hope this helps. Don France Technical Architect -- Tivoli Certified Consultant Tivoli Storage Manager, WinNT/2K, AIX/Unix, OS/390 San Jose, Ca (408) 257-3037 mailto:[EMAIL PROTECTED] Professional Association of Contract Employees (P.A.C.E. -- www.pacepros.com) -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of Chetan H. Ravnikar Sent: Saturday, August 31, 2002 9:09 AM To: [EMAIL PROTECTED] Subject: test for DRM Hi there and thanks in advance for all your tips and recommendations we have a huge distributed new TSM setup, with server spread across the campuses. We recently moved from 3 ADSM 3.1 servers to 9 TSM 4.2.2 servers all direct attached SUN 280r(sol-2.8), SUN T3 and Spectralogic 64K libs I have a few questions 1. We have TSM working on Solaris2.8 with SUN T3 storage for mirrored DB and storage pools. Our performances is nowhere close to what SUNs recomended T3 sustained writes which is 80MB. Recovery logs are on external D130 disk-packs has anyone seen a setup with SUN and is this normal? My writes to diskpools are at 20 to 30 MB and that is slow. I have a raid5 setup for the storage pools, Tivoli suggests JBOD for storagepools rather than raid5!? but how do I protect myself from a disk fail on a critacal quarter financial backup.. since the source gets overwritten as soon as they throw the data on to my stoarge pools T3 (primary) 2. One such setup has a StorageTek L7000 lib and my customer wanted me to prove that the tapes from offsite do work. Tivoli suggests that I do not test DRM on a production system. But I had no choice but to atleast test for bad media on the primary tapepool!if any so I went ahead picked *a* node with a select statement, marked all the tapes destroyed on the primary tape pool(for that node), and started a restore of a filesystem. Prior I had a bunch of tapes recalled from the off-site pertinent to the same node. Had them checked in as private and waited, to see if TSM picks those tapes since the onsite were marked destroyed. This process has been rather lengthy and tedious and unsuccessful Has anyone done a rather simpler test for bad media, to prove that the off-site tapes do work, less to say the test I performed came back with data integrity errors and my customers are not happy and with all traces setup.. Tivoli was unclear how that happened (Tivoli claimed, there could be a flaw in my DRM process) 3. The last question, during a copy storage pools process, if I *cancel* the process (since it took days), the next time I start (manual or via a script) does it pick up from where it stoped! thanks for all your responses, forgive me, My knowledge is pretty limited and I started learning Tivoli while I started this project Cheers.. Chetan
