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Old 05-30-2006, 08:57 AM   #1 (permalink)
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First let me say hello and thank you to everyone for their help and thoughts.

Here is our current situation. We are preparing to upgrade our 3.6 server to 4.1, due in large part to the number of problems and delays we have been experiencing recently. I have been trolling this site for months while troubleshooting various other BlackBerry problems, so I think I know the reaction to our environment will be, but here goes:

1 BES 3.6
750 users spread across 89 exchange servers, the vast majority of which are connected to the BES via the WAN, with latency times varing from <1ms to >200ms depending of location of site and speed of connection.

My real question is this:

Can I expect 4.1 to deal with this environment better than 3.6? I am actually worried that it may work worse due to the fact that everything in the PIM is synced wirelessly and that the additional bandwith will drag us down even more. If it was up to me I would overhaul the entire environment, consolidate users on exchange servers on the same LAN as the BES and such, but it is not up to our team to manage the environment... only to keep our BlackBerry users up and running.

Thanks!
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Old 05-30-2006, 09:45 AM   #2 (permalink)
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The network is the bottleneck. Anytime you have ping times over 100ms you will start getting hung threads and latency, no matter what version.
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Old 05-30-2006, 11:52 AM   #3 (permalink)
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The environment needs to be redesigned. 750 usrrs on 89 Exchange servers?????

8.5 users per Exchange servers??

Somebody either had no clue how to design an Exchange environment, had too much money or both.

I would consolidate my Exchange servers and put a BES next to each one of them. That is the only way to improve your performance.

May I ask why so many Exchange servers?
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Old 05-30-2006, 12:21 PM   #4 (permalink)
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Quote:
Originally Posted by CanuckBB
The environment needs to be redesigned. 750 usrrs on 89 Exchange servers?????
I assume he has 750 bb users, not exchange users.

So far, my 4.1 server seams to be running better than the 3.6 server I'm also running. I only have a few users on the new server that over high latency WAN links. One neat thing is that you can manually create differnt mailbox threads/agents and assign users to them. If I start having performance problems, I might create a new thread and assign high latency users to it.
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Old 05-30-2006, 12:26 PM   #5 (permalink)
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OK. Could be my misread. I think I've seen so many bad configurations that I tend to assume the worst. They might still benifit with impementing regional BES to reduce latency.
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Old 05-30-2006, 12:27 PM   #6 (permalink)
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Natrone is right. With high latency between the Exchange servers and the BES, you will continue to have problems.
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Old 05-30-2006, 12:58 PM   #7 (permalink)
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Quote:
Originally Posted by Just Chuck
I assume he has 750 bb users, not exchange users.

So far, my 4.1 server seams to be running better than the 3.6 server I'm also running. I only have a few users on the new server that over high latency WAN links. One neat thing is that you can manually create differnt mailbox threads/agents and assign users to them. If I start having performance problems, I might create a new thread and assign high latency users to it.
You are correct. Actual exchange accounts are somewhere closer to 50,000. Curently we only have 750 BB users and about 200 users on our GoodLink system, so mobile devices are still somewhat limited in our environment. That is an interesting idea about assigning high-latency users to a single thread. At least they wouldn't drag down everyone else.

Thanks for the help everyone. I'm sure I'll be back.
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Old 05-31-2006, 05:50 PM   #8 (permalink)
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Hi,

Gotta laugh because I've already executed the actions that you've outlined and was trolling this site looking for a silver bullet.

I've had three 3.6 servers running on temp srp keys, supporting obout 1100 users geographically dispersed across the US.

Stood up new 4.0 servers and began the migration, splitting the 1100 users across new 4.0 servers. Reached a tipping point about 2/3 of the way through at which point performance became horrendous.

We've got about 60 exchange servers spread across the states supporting these users, with half locally riding on a clustered exchange environment. The remote half are seeing delays of anywhere from 30 minutes to 24 hours to receive mail.

Latency for us varies from nothing locally at our HQ, where the BES boxes live on a common network segment, to 200ms+ at the extreme end.

Four options await you:

1.) Conduct further research and delay your migrations. I strongly recommend this solution.
2.) Buy a BES for each of your distributed exchange sites. Not a pretty solution.
3.) Migrate all of your distributed exchange users to a common Exchange environment colocated with the BES. Downside here is the potential for additional traffic based on the mail now being pulled over the WAN to your outlook clients.
4.) Isolate high, medium, and low latency sites across multiple BES boxes. This is my current solution, to be implemented this evening. This will hopefully offer some relief, but I'm not yet betting the farm.

Good Luck!
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Old 05-31-2006, 05:54 PM   #9 (permalink)
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Hi Chuck,

How can I bind those users to the specific threads?

Regards!

Quote:
Originally Posted by Just Chuck
I assume he has 750 bb users, not exchange users.

So far, my 4.1 server seams to be running better than the 3.6 server I'm also running. I only have a few users on the new server that over high latency WAN links. One neat thing is that you can manually create differnt mailbox threads/agents and assign users to them. If I start having performance problems, I might create a new thread and assign high latency users to it.
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