Not your significant other at 50. -----Original Message----- From: Joshua S. Bassi [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 14, 2002 1:18 AM To: [EMAIL PROTECTED] Subject: Re: TSM and RAID on NT
JBOD = Just a Bunch of Disks -- Joshua S. Bassi Sr. Solutions Architect @ rs-unix.com IBM Certified - AIX/HACMP, SAN, Shark Tivoli Certified Consultant- ADSM/TSM Cell (415) 215-0326 -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Pétur Eyþórsson Sent: Wednesday, February 13, 2002 9:05 AM To: [EMAIL PROTECTED] Subject: Re: TSM and RAID on NT Thanks Kelly. But what is JBOD? My Hardware guys say that on Application Servers, they get best perfomance when setting the stripe size to 16K instead of 8K default (witch is ideal for File & Print Servers) thanks in advance Kvedja/Regards Petur Eythorsson Taeknimadur/Technician IBM Certified Specialist - AIX Tivoli Storage Manager Certified Professional Microsoft Certified System Engineer [EMAIL PROTECTED] Nyherji Hf Simi TEL: +354-569-7700 Borgartun 37 105 Iceland URL: http://www.nyherji.is -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of Kelly Lipp Sent: 13. febrúar 2002 16:33 To: [EMAIL PROTECTED] Subject: Re: TSM and RAID on NT Now that's a very good question. During my LTO vs. SDLT performance testing, I discovered my first bottleneck at the RAID5 array. I was surprised by this to some extent as I didn't expect it to be so bad. So enter RAID for storage pools cautiously. We are using RAID in our configurations, but only for the OS and DB/Log volumes. We're using JBOD for storage pool volumes. As for your specific questions, I don't have the answer. Remember that TSM is going to "stripe" data on the volumes: a client will write txngroupmax files per volume and move to the next (typically. This may vary a bit, but you get the idea). Since it is striping the data, you want to be careful how much you stripe it underneath. Lots of head thrashing can occur. Kelly J. Lipp Storage Solutions Specialists, Inc. PO Box 51313 Colorado Springs, CO 80949 [EMAIL PROTECTED] or [EMAIL PROTECTED] www.storsol.com or www.storserver.com (719)531-5926 Fax: (240)539-7175 -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of Pitur Ey~srsson Sent: Wednesday, February 13, 2002 6:32 AM To: [EMAIL PROTECTED] Subject: TSM and RAID on NT Hi what is the best RAID for TSM on NT and how large should the Stripe Size be on the RAID CONTROLER. Kvedja/Regards Petur Eythorsson Taeknimadur/Technician IBM Certified Specialist - AIX Tivoli Storage Manager Certified Professional Microsoft Certified System Engineer [EMAIL PROTECTED] Nyherji Hf Simi TEL: +354-569-7700 Borgartun 37 105 Iceland URL: http://www.nyherji.is
