Steven, The logical volumes are not dedicated disks in most cases, which means that other applications may be using the same disks at the same time. With our new "TSM Server Blueprint" standards, TSM database's over 1TB require 16 luns.
You can go to this link to find out more https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/Tivoli%20Storage%20Manager/page/NEW%20-%20Tivoli%20Storage%20Manager%20Blueprint%20-%20%20Improve%20the%20time-to-value%20of%20your%20deployments Best Regards, _________________________________________________________ Ronald C. Delaware IBM Level 2 - IT Plus Certified Specialist – Expert IBM Corporation | Tivoli Software IBM Certified Solutions Advisor - Tivoli Storage IBM Certified Deployment Professional Butterfly Solutions Professional 916-458-5726 (Office 925-457-9221 (cell phone) email: ron.delaw...@us.ibm.com Storage Services Offerings From: Steven Harris <st...@stevenharris.info> To: ADSM-L@vm.marist.edu Date: 07/15/2014 06:55 PM Subject: [ADSM-L] Lun versus logical volume for DB volumes Sent by: "ADSM: Dist Stor Manager" <ADSM-L@vm.marist.edu> Hi, I've specced a design for a new TSM server and as recommended have specified multiple luns for the database. The folklore is that DB2 will start one thread per lun so for a big database you use 8 luns and hence get 8 threads. My AIX guy is asking whether I really need 8 luns or will 8 AIX logical volumes have the same effect. Does anyone know or can tell me where to look? Thanks Steve. Steven Harris TSM Admin Canberra Australia
