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:mike_brown_tsm AT YAHOO DOT COM]
> Sent: Wednesday, 26 June 2002 10:26 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> 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
>
>
>
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