Hi Rick, We hade a wild discussion about this last Tivoli User Group Meeting in Sweden. And I think most people got the best performance by using
RAID 1+0 on DB on as fast disk as possible. (Fusion I/O, SSD or 15K SAS) RAID 1 for Active/Archive Log Mutliple RAID 5 for Diskpool Best Regards Christian Svensson Cell: +46-70-325 1577 E-mail: christian.svens...@cristie.se CPU2TSM Support: http://www.cristie.se/cpu2tsm-supported-platforms ________________________________________ Från: Rick Kluitman [rick.kluit...@gmail.com] Skickat: den 22 mars 2012 08:20 Till: ADSM-L@VM.MARIST.EDU Ämne: Best disk layout for new TSM setup with the hardware I got, please advise Hi, I am pretty new to TSM and have the task of installing a new setup, I read a lot about the TSM server installation and did some tests in a VMware setup. The question I have is this, I have a HP server with 10 internal SAS disks on a raidcontroller that does raid1/raid5/raid10 that will become our TSM server. I am thinking a 4 disk raid 5 for the diskpool will be OK, but what do I do for metadata? Do I make one big raid 10 for logging and db files, do I split this up? I am not sure if 2 or 3 seperate raid sets will be better than one big one, and if I do split, do I place the activity log / archive log on the same disk (different fs) and the db on a seperate set? So these are my options I guess; a) 1 - raid 1 - OS+archive log (2d) 2 - raid 1 - active log (2d) 3 - raid 1 - db (2d) 4 - raid 5 - diskpool (4d) b) 1 - raid 10 - OS+archive log +active log (4d) 2 - raid 1 - db (2d) - 4 - raid 5 - diskpool (4d) c) 1 - raid 10 - OS+archive log + active log + db (6d) 2 - raid 5 - diskpool (4d) I think option B might be the best option but I am not sure about the 2 disks for the TSM db, that might be a huge bottleneck? No dedupe on this TSM server so DB size should be ok. Thank you, Rick
