Hello 

try to increase TCPwindowsize

Good luck....

Dietmar

> -----Ursprüngliche Nachricht-----
> Von:  Eliza Lau [SMTP:lau AT VTCAT.CC.VT DOT EDU]
> Gesendet am:  Dienstag, 10. August 1999 21:45
> An:   ADSM-L AT VM.MARIST DOT EDU
> Betreff:      ADSMconnect agent for Exchange throughput
> 
> ADSMers,
> 
> What throughput is everyone getting out of the ADSMconnect agent for
> Exchange?
> 
> The setup:
> AIX 4.3.1 server running ADSM 3.1.2.13.
> 3494 with four 3590 drives (device data rate - 32G/hr)
> ADSMconnect agent 1.1b
> 100mb ethernet connection for the ADSM server and the Exchange server
> 
> It takes the ADSMconnect agent 2.85 hours to backup the 8G Exchange
> database
> with a network transfer rate of 3.04GB/hr.  I am using the performance
> settings
> recommended in the "Using ADSM to Back Up and Recover Microsoft Exchange
> Server"
> redbook.  It states that the throughput maximum that can be obtained for a
> 100mb Ethernet network is 34GB/hr.  I am getting only one tenth of that.
> Where is my bottleneck?  I have asked our network people to look for
> any network problems.  The ADSM server and the Exchange server are
> in different subnets, but they are in the same room and only 30 feet from
> each other.  Where else should I look?  Thanks.
> 
> dsm.opt:
> TCPwindowsize   64
> tcpbuffsize     32
> txnbytelimit    25600
> compression     off
> 
> --------------------------------------------------------------------------
--
> ----
> ----
>  Eliza Lau
>  Virginia Tech Computing Center                email : eliza.lau AT vt DOT edu
>  Virginia Polytechnic Institute & State University
>  1700 Pratt Drive
>  Blacksburg VA 24060                           phone : (540) 231-9399
> --------------------------------------------------------------------------
--
> ----
> ----