The Lan Free Backup agent (Storage Agent) is NOT recommended for use with small files. It will be slower than going over the net. This agent will only provide good performance when used with LARGE files. This has been documented by Tivoli. I have some performance numbers and I'll try to dig them out, but the recommendation is NOT to use it for small files.
-----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Rainer Tews Sent: Tuesday, April 16, 2002 4:44 AM To: [EMAIL PROTECTED] Subject: Slow Speed with the SAN-Client Hallo folks, we've have a problem with the storageagent for SAN-Environment. We have very bad backup- and restore-times. We use on NT4 Client TSM 4.2.1.20 Storageagent V 4.2.1.12 on the TSM-Server (W2K) TSM 4.2.1.12 The NT-4 Client has the job to backup mirrors from a EMC-storage-system. It mounts the drives with a different nodename und saves them directly in a tape-pool via the storageagent. The performance isn�'t acceptable: We can restore 7.66 GB in 5:20 while using the san-client. Mostly little files - about 200.000 files and folders. If we restore the files over a separate network (100 fd/Ethernet) the restore-time is "only" 2:47. The NT-4 Client has two HBAs, with one HBA it sees the EMC with the other the IBM LTO Tape Library 3584. >From IBM we got some parameters and installed them, but the problems are actually the same. Here are the parameters: TSM Server: TXNGroupmax 256 MOVESizethresh 500 MOVEBatchsize 1000 TSM Client: TXNBytelimit 2097152 When we backup or restore large files we have a phantastic speed up to 60 GB/h. But in my opinion it cannot be possible, that we have with such an expensive environment so bad backup- and restore-times. Can anyone help us here? Kind regards Rainer Tews _________________________________________ ScaleOn GmbH & Co. KG SO-SE3 Leverkusen, B151 Tel.: +49 214/30-23369 Fax: +49 214/30-9623369 E-Mail: [EMAIL PROTECTED] Internet : http://www.scaleon.de=
