Hi,
In answer to both this and your subsequent message about SQL 7, we have
tried to do similar things to you. I have had good experiences with the
external database with SQL 7.0, however as is often mentioned on the list,
the dll supplied by Ipswitch does not check the state of the connection once
open. You can either alter the source code or use an altered version created
by one of the List members (sorry, I don't have the link to hand).
Regarding clustering and WLBS, it is very important that any web session
always goes to the same server for the entirety of the session, this can be
done using the Virtual NIC properties setting the 'affinity' to 'single'.
This means that all traffic will goto a certain member of the cluster unless
that node dies.
An additional thought is that I am not sure how you are sharing the domain
data between the two servers, is this using peering? I was considering
storing all the data on a clustered share. This would work as long as the
security permissions for the Imail services matched those that could
reference the share. I was a bit worried about the performance hit that this
would generate. Also it make the solution that bit more complex (as if it
needed to be:)
Unfortunately IMail doesn't currently feature failover cluster awareness
(not a major ommission at the price though).
Hope this helps and I would be interested in other experiences in this area.
Steve
Steven Moore
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, November 30, 1999 6:23 PM
Subject: [IMail Forum] SQL 7.0
>
>
>
> Clustering vs Windows Load Balancing Service
>
> Hello,
>
> I have built an IMAIL system based on two IMAIL servers in a load balanced
> environment.
>
> This arrangement seems to be causing some problems - as far as I can work
out,
> WLBS balances individual requests from a user, rather than the overall
user
> session. The result is that the user cannot use the system!
>
> Has anyone tried using IMAIL server in a Clustered (or any other high
> availability arrangement)?
>
> I gather this is not an officially supported option, but does anyone have
any
> comments?
>
> Regards,
> Mark McSherry
>
>
>
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