Hi Sascha Are the drives connected on the same adapter? In this case, the "shoe-shine" effect is probably what you're seeing. Your new LTO-2 drive have variable speed. However, the speed is only adjustable as long as the speed doesnt fall below 15MB/s. Your LTO-1 drives has a maximum transfer rate of 15MB/s uncompressed. This could mean, the LTO-1 drives doesnt deliver data fast enough to the LTO-2 drives.
If you're using SCSI connected drives, this could impose a real impact on performance, as the SCSI adapter is arbitrated, and therefore cannot write to more than one device at a time. If you're using AIX, you could use for example topas(if its installed) so see the performance of your tape drives. As long as no other procesess or sessions are running, you could look at the top right number(tty write/read) to determine the speed of the tape drives. Best Regards Daniel Sparrman ----------------------------------- Daniel Sparrman Exist i Stockholm AB Propellerv�gen 6B 183 62 T�BY V�xel: 08 - 754 98 00 Mobil: 070 - 399 27 51 Sascha Askani <[EMAIL PROTECTED]> Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> 2004-07-05 13:46 Please respond to "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> To [EMAIL PROTECTED] cc Subject Re: 3582 supported on TSM 5.2.2 AIX ? Hi Daniel, thanks for your fast reply, I feel somewhat relieved that the lib is supported, because I face major performance problems with this library at the moment doing a "move nodedata" 3583(LTO1) -> 3582(LTO2), but I can't say if this is a Library-, SCSI- or TSM-Problem or no problem at all (for example "Shoe-shine" on the 3583... Greetings Sascha Askani > Hi Sascha > > It means from, so you shouldnt have any problems using your 3582 under TSM > 5.2.2.2. The only tape libraries from IBM that has gone out of support is > the 3575-series of libraries. > > Notice that you will have to download and install the IBM Atape device > driver, which you can download from > ftp://ftp.software.ibm.com/storage/devdrvr/AIX. > > Best Regards > > Daniel Sparrman > > Sascha Askani <[EMAIL PROTECTED]> > Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> > 2004-07-05 13:18 > Please respond to > "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> > > > To > [EMAIL PROTECTED] > cc > > Subject > 3582 supported on TSM 5.2.2 AIX ? > > > > > > > Hi List ! > > I just wanted to assure that the IBM 3582 (SCSI)-Library is supported > under > TSM 5.2.2 (AIX) because "Supported Devices" on IBM-Website tells me: > > IBM 3582 Ultrium Scalable AIX HPUX SUN WIN > The IBM device driver is required. > 2 Drives 24 Slots 5.1.6.5 5.1.6.5 5.1.6.5 5.1.6.5 > > Does this mean that said library is ONLY supported under 5.1.6.5 or is it > supported FROM 5.1.6.5 ON ? > > Thanks for your support ! > > Sascha Askani >
