Here are some performance numbers of showing what you can expect with Lan free, different file sizes and different tapes:
TSM LAN Free backup/restore performance Selective Backup and Restore |-----------------+-----------------+-----------------+----------------- +-----------------| |Workload Size |3580 Fibre |3590E Fibre |3580 Fibre |3590E Fibre | | |selective backup |selective backup |restore (KB/sec) |restore (KB/sec) | | |(KB/sec) |(KB/sec) | | | |-----------------+-----------------+-----------------+----------------- +-----------------| |256MB files |34202 |34466 |28105 |29677 | |-----------------+-----------------+-----------------+----------------- +-----------------| |Mixed files (64KB|5667 |6244 |9118 |9571 | |avg) | | | | | |-----------------+-----------------+-----------------+----------------- +-----------------| |10KB files |1057 |1534 |2599 |2581 | |-----------------+-----------------+-----------------+----------------- +-----------------| Similar numbers have been published by Tivoli in a number of presentations. -----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 isnī'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=
