Yes. That's likely. Tape mount, depending on technology is a minute or two. Positioning, again based on technology can be zero to 5-6 minutes. 3590 probably much less, DLT perhaps more.
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 Fletcher, Leland D. Sent: Saturday, May 18, 2002 9:15 AM To: [EMAIL PROTECTED] Subject: Performance again!!! A comment about performance being 9 minutes to tape and 75 seconds to disk. Is it possible that most of the 9 minutes was tape mount and positioning time? > Please respond to "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> > Sent by: "ADSM: Dist Stor Manager" > <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED] > cc: > > Subject: Performance again!!! > > Hello everybody, > > It seems like TSM performance problems will neer > end!!! > > Here is the new problem: > > The customer is running TSM 4.2.1.0 on a Windows > 2000 > server machine . An IBM rack case 82XX which > contains > a Quantum DLT8000 tape drive is connected to the > server. > The driver version for the Quantum DLT drive is 1.5 > and > is installed on the W2K machine. We tried a backup > of > 350MB on the local server with the Windows 2000 > Backup > > utility and it took us approximately 75 seconds . > > Next , we tried the same Backup from TSM using its > Device Driver and it took us about 9 minutes . We > tried switching TSM to use the Native device driver > but still we got the same performance result . > > So we upgraded to 4.2.2 ; In the Device Manager for > TSM,we can see that TSMSCSI.exe is upgraded to > 4.2.2.25 and the ADSMSCSI.sys is 4.2.2.3 . The > server > has a version of 4.2.2.25 . Still , we obtained > poor > backup performance . > > We suspected that maybe it was a database bottleneck > ( eventhough it is still empty) ; so we tried the > same > Backup using TSM but the destination was on the > HardDisk. > The performance was good and the backup finished > within 75seconds . So, we can eliminate the > database > problem. > Also, we noticed with version 4.2.2.0 that it is > crashing frequently . It was exiting abnormally . > > On the site of tivoli, the latest version of TSM > server is 4.2.2 . We do not have the 5.1 release . > > does anyone have a suggestion? > > thx a lot > Sandra > > __________________________________________________ > Do You Yahoo!? > LAUNCH - Your Yahoo! Music Experience > http://launch.yahoo.com <http://launch.yahoo.com/> Lee Fletcher Network Project Integrator Ameren Callaway Plant 573-676-4106 [EMAIL PROTECTED]
