What I did recently was to load a production DB on the test server and run my series of tests. Then reloaded the DB, changed stuff and run again. It sounds like you are setup to do that.
For comparison, I noted the run time for expiration on the production and test systems to estimate an offset. I used the offset to adjust the tests to production. I then spent the next three weeks restoring the DB and testing. (rinse. Repeat.) The offset in my case added about 10% to the test times to give me an estimated production run time. This is mostly because we have small DB incremental backups running all day. You might also try a full audit if you have a week or 2 of spare time. Hope this helps at least a little. Andy Huebner -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Michael Green Sent: Tuesday, August 04, 2009 11:06 AM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] I'm getting new disk storage. I know performance benchmarking is an art. And asking questions like "how can I test this new storage" may bring a smile on face of some of you. But still... The time has come and I need to replace the disk storage underlying the DB/DISKCLASS/FILECLASS files. I'm going to test two storages from Infortrend and DDN. Both storages allow mix and match of SAS (for DB/LOG) and SATA (for DISK/FILECLASS) drives. Both will be FC 4Gb attached. I've been thinking about replicating my biggest TSM server (Linux based) on a server that has been put aside for this purpose. I'll load DB/LOG onto SAS drives and some FILECLASS volumes onto SATA drives and time the following workloads: - expiration - db defrag - Reclamation To be honest I am not sure I know how to properly set up such testing environment. I'm concerned that my tests will not be representative enough and will not indicate the actual performance that I'll observe after the storage system will become production. Your thoughts on this topic are much appreciated... -- Warm regards, Michael Green This e-mail (including any attachments) is confidential and may be legally privileged. If you are not an intended recipient or an authorized representative of an intended recipient, you are prohibited from using, copying or distributing the information in this e-mail or its attachments. If you have received this e-mail in error, please notify the sender immediately by return e-mail and delete all copies of this message and any attachments. Thank you.
