Here there are DB servers with 3.8 TB oracle SAP instances on them and they backup at a peak rate of 304-342 GB/hr. How ? Large client server (Sun E10K with 32 processors) Gb ethernet 15 concurrent client sessions client compression goes to diskpool, not straight to tape...
Each session is able to keep a processor running at about 90+%. Each session sees a peak transfer rate of about 5+ GB/hr of COMPRESSED CLIENT DATA at an average of 3.8/1 compression ratio that is about 19+ GB/hr of actual oracle data base space. Network transfer rates run about 80-90 GB/hr but at an average of 3.8/1 compression that is the 304-342 GB/hr of actual oracle data base space. TSM server is a 7017-S70 with only two processors and really doesn't run that busy (30-45% maybe) TSM server does utilize ESS storage but we see this same sort of abilities on tsm servers using large amounts of SSA disks configured as JBOD... but we try to limit things to one drawer per SSA loop. Now I said peak transfer rates because at that peak rate the 3.8 TB data base should backup in about 12.8 hours but it actually runs between 14-16 hours. Also one can utilize 100 Mb/sec fast ethernet if they are OK with just 40 GB/hr data transfer rates that puts the backup from 14 hours to just under 24... Dwight -----Original Message----- From: Dearman, Richard [mailto:[EMAIL PROTECTED]] Sent: Friday, February 21, 2003 8:34 AM To: [EMAIL PROTECTED] Subject: Anyone doing 1TB+ Backup Nightly I do 1TB+ backups nightly which run for about 8 hours. A large part of our backup is a 500GB Oracle database backup to TSM. The database backups up over a private 1Gb connection to a AIX P660-6h1 server with 2GB of RAM and 4 processors. The data then goes to nine 2disk stripe sets, over a 1Gb SAN connection (I went with stripe sets because RAID5 was just to slow). I'm getting high iowat times on my AIX TSM server. I'm having a hard time pinpointing exactly where the bottleneck is at. Currently it takes 51/2 hours to backup 500GB but I know it can be better. My question is are any of you that are moving this amount of data faster than me using a more powerful server like a IBM 690. THanks ***************************EMAIL DISCLAIMER*************************** This email and any files transmitted with it may be confidential and are intended solely for the use of th individual or entity to whom they are addressed. If you are not the intended recipient or the individual responsible for delivering the e-mail to the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is strictly prohibited. If you have received this e-mail in error, please delete it and notify the sender or contact Health Information Management 312.996.3941.