Don't forget drive compression when making throughput calculations! 80 MB/sec * 4 (compression of text data) =320 MB/second as the maximum available bandwidth per LTO-3 drive.
Good Luck keeping ONE of these beasts streaming with high compression! Orville L. Lantto Datatrend Technologies, Inc. (http://www.datatrend.com) IBM Premier Business Partner 121 Cheshire Lane, Suite 700 Minnetonka, MN 55305 Email: [EMAIL PROTECTED] CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. Ben Bullock <[EMAIL PROTECTED]> Sent by: "ADSM: Dist Stor Manager" <[email protected]> 02/08/2005 02:10 PM Please respond to "ADSM: Dist Stor Manager" <[email protected]> To [email protected] cc Subject Re: Number of HBA's The documents say you are supposed to NOT have SAN and tape devices running on the same HBAs. I would expect you would use 2 HBAs to connect to the SAN and 2 to connect to the tape drives. 2 cards have more than enough bandwidth to support the 4 LTO3 drives. Ben -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Stef Coene Sent: Tuesday, February 08, 2005 1:03 PM To: [email protected] Subject: Number of HBA's Hi, For a setup with: - 4 x LTO3 drives in a IBM 3583 library - 1 oracle database server: 40GB/1hr archives that needs to backuped (AIX LPAR) over the SAN - 1 TSM server (AIX LPAR) What with the HBA's? Is it needed to split the tape and disk activity and to put 4 HBA's in the oracle DB (2 HBA's for disk activitiy and 2 for tape)? Idem for the TSM server. 2 HBA's or 4 HBA's? Stef
