Clustering Performance Issues

All,

We recently clustered our AS400 Mail server with a Windows Server.   It 
was on 6.5.4 and is now on 7.0.2. 

We are experiencing issues with Cluster replication.  I only have about 
1000 users and I have 3 cluster replicators running on each server.

The issue I have is that when a change is made on the windows server it 
comes across to the AS400 within about 2 seconds.  Going the opposite 
direction from the AS400 to windows it can take over a couple minutes for 
it to replicate.  I have had a ticket open with Lotus for over 2 months 
and no luck so far.  We have done the following....

1) Made sure that the NICs and switch were set to 100/Full Duplex.
2) Made sure that compression was not turned on on the clustered port.
3) Applied all the latest PTFs.  (we are on V5R3).

It is on the same network segment and switch so I am at a loss.  I have 
done clustering on 2 windows boxes before with several thousand users and 
not had this issue so I am guessing it is something on the AS400 slowing 
things down.

The Server Availability Index is really low....see below.

Any ideas would be GREATLY appreciated.

Thanks

Brian

 Cluster name: MailCluster1, Server name: HubMail1/The Hub Group Inc.
 Server cluster probe timeout: 1 minute(s)
 Server cluster probe count: 4656
 Server cluster default port: TCPIP2
 Server availability threshold: 0
 Server availability index: 47 (state: AVAILABLE)
 Server availability default minimum transaction time: 3000
 Cluster members (2):
 Server: HubMail2/The Hub Group Inc., availability index: 100
 Server: HubMail1/The Hub Group Inc., availability index: 43


Brian Rutherford
Senior Lotus Notes Developer/Admin
Ph:  630-795-2155
Fax: 630-795-2220
www.hubgroup.com
brutherford@xxxxxxxxxxxx