SAN (aka LANfree) protocols are good for moving a few huge files. If you have lots of little files (as is common in W2K) then you are better off with TCP (what your LAN probably uses).
Have fun! Kai. > -----Original Message----- > From: Mike Brown [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, 26 June 2002 10:26 AM > To: [EMAIL PROTECTED] > Subject: Why my LAN free backup even slower then my LAN backup > > > Why my LAN free backup even slower then my LAN backup? > > I got really bad performance, 1.2MBps for LAN, 900KBps for > LANfree Backup. > > My TSM server is Version 4.2.1.11 in AIX 4.3.3, p640, 1 > power3 processor, 1G memory; > > My TSM Storage Agent veriosn 4.2.1.11 on Win2k Advanced > server, TSM client 4.2.1.20 on same machin, this is a compaq > Deskpro EP/SB, 1 PII 350MHz processor, 256M memory, Emulex LP800 HBA; > > 3583 Library, 2109 Switch, 2108r03 bridge; > > During LANFree Backup, performance is about 900KBps, win2k > host have 15% CPU utilization, 70% Disk I/O, memory > utilization keep low, , even worse then LAN backup; > Paramenters: TCPWINDOWSIZE 63(IBM recommaned in release > notes); TCPBUFFSIZE 512; RESOURCEUTILIZATION 50 (looks like > same as set to 10); > > During LAN backup, the tsm client win2k host have 95% CPU > utilization, performance is about 1.2MBps; > > I hate this Compaq crap. None of the individual are full > utilizated, e.g. CPU, Memory, or DISK IO, but the whole > system together is just simply slow. > > What should be my performance expectation, how come my LAN > free backup even slower then my LAN backup? > > For some other host, I am OK, e.g: > > When I use the other RS/6000 P640 box as the TSM LAN client, > I can get 7.0MBps by using LAN backup; > > When I use the other IBM NetVista, 950MHz, Intel, 256M > Memory, I can get 1.9MBps by using LAN, with 100% Disk IO Usage; > > Mike Brown > > > > --------------------------------- > Do You Yahoo!? > Sign-up for Video Highlights of 2002 FIFA World Cup >
