The client can indeed consume a large amount of memory during the backup, as it requests backup information from the server for all active backup versions. Given your large file system, several hundred MB of memory doesn't surprise me.
Try the 4.2.1.26 patch level, which includes a fix for IC32797 that may address at least part of your problem. While the client may still require large amounts of memory (I don't think it will need anywhere near 4 GB!, though), this fix should improve the efficiency of TSM's memory allocation routines, and help mitigate the problem. You can find the patch at: ftp://ftp.software.ibm.com/storage/tivoli-storage-management/patches/client/v4r2/Windows/WinNT/v421 The file names you need all begin with IP22373_26. Please review the IP22373_26.README.FTP file for download and install instructions. While I can not give you an exact number as to how much memory you need, you may be a bit underpowered at 512 MB of RAM. But try the patch, and see if it helps. Regards, Andy Andy Raibeck IBM Software Group Tivoli Storage Manager Client Development Internal Notes e-mail: Andrew Raibeck/Tucson/IBM@IBMUS Internet e-mail: [EMAIL PROTECTED] The only dumb question is the one that goes unasked. The command line is your friend. "Good enough" is the enemy of excellence. Sascha Askani <[EMAIL PROTECTED]> Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> 03/06/2002 03:42 Please respond to "ADSM: Dist Stor Manager" To: [EMAIL PROTECTED] cc: Subject: Client Memory usage on NT CLIENT Hi, we are using a 4.2.1 Client on a Machine running WinNT4 SP6a. The Client is connected to an FC-Array containing approx. 1'000'000 files and 1'800'000 directories (growing). Since the TSM hangs the whole system when trying to backup these files, I took a look on the memoy usage: the software uses 360 MB of RAM after running for 2m30sec and still shows zero inspected objects. Do you have a clue how much RAM I need to successfully backup these files and what values are there to tune the performance ? I used the "memory efficient backup" switch, that changed nothing. The machine is a P3-866, 512MB RAM. According to IBM I need approx. 4GB of RAM to do this Backup ?! Greetings and TIA Sascha
