This is a known performance degradation. Remember the SAN connection only writes 1 thread at a time; whereas the LAN can create up to 5, I believe. So if you are running file system saves with very small files the LAN will work better. The meta data goes down the LAN interface in either case.
Your next question will be why don't they multi-thread the data to the tape drive. I can tell you that you that other products do this and it sounds great until you go to duplicate the tapes for offsite. The performance is horrible. So, the answer is you have to use the right tool for the job. File Servers with small files, Gigabit LAN may be a better answer. Large files and TDPs for databases like SAN. -----Original Message----- From: Jorge Rodriguez [mailto:[EMAIL PROTECTED]] Sent: Tuesday, October 30, 2001 1:22 PM To: [EMAIL PROTECTED] Subject: TDP for R3 on AIX with SAN Hi all... I have the following: AIX 4.3.3 ML 9, TSM Server 4.2.0 TSM Client 4.2.0, TDP for SAP R3 Oracle 3.2.0.6 and the Storage Agent 4.2.0 in a SAN environmet using McData Director ED-5000 and LTO 3584 connected to McData ES-1000. The McData4s are interconnected. When the Backup/Archive Client uses the SAN the performance is excellent, but when the TDP uses the SAN the performance is the worst. Using TDP, the SAN backup time is greater than LAN backup time. What kind of tuning is necessary to do?. What results do you have using this environment? TIA Jorge Rodrmguez Caracas - Venezuela _____ Get your FREE download of MSN Explorer at http://explorer.msn.com <http://go.msn.com/bql/hmtag_itl_EN.asp>
