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Old 06-14-2006, 03:23 PM   #1 (permalink)
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OK I did all the searching a person could do.

Where are docs on adding a second BES with new SRP to our current SQL database that already has a production BES pointed to it.

Can I just run through conf server on teh new one and point to the same remote sql box and same BESMgmt database? Will they see the same users I see.

Will it require a reboot of servers?

thanks
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Old 06-14-2006, 03:43 PM   #2 (permalink)
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When you install the new BlackBerry Enterprise Server you just point it to the same remote SQL server database.

You will have to make usre you are running the same version of BlackBerry Enterprise Server as the old server.

If they are both the same version of BlackBerry Enterprise Server you will be able to move users between the two servers and they will not have to recradle the handheld .

PS: I would make a backup of the database before adding the 2nd BlackBerry Enterprise Server to the database tho.
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Old 06-14-2006, 08:36 PM   #3 (permalink)
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Question Why add a 2nd BES?

We are thinking about doing this if it will improve preformance (we are finding the more users we add to our BES server, the slower email deliveries are received by the handhelds).

Can either of you comment as to why you have added a 2nd BES and if improving performance is one of the reasons?

(FYI, we have a BES 4.1 Server with over 400 users dispersed over 4 Exchange servers in 4 different physical locations across Australia)

Thanks in advance

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Old 06-15-2006, 09:11 AM   #4 (permalink)
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Quote:
Originally Posted by gadler
We are thinking about doing this if it will improve preformance (we are finding the more users we add to our BES server, the slower email deliveries are received by the handhelds).

Can either of you comment as to why you have added a 2nd BES and if improving performance is one of the reasons?

(FYI, we have a BES 4.1 Server with over 400 users dispersed over 4 Exchange servers in 4 different physical locations across Australia)

Thanks in advance

If you have 4 Exchange servers in 4 different locations, that could be the reason. The MAPI subsystem is a very weak way to communicate. it does not have very good error checking or QOS. That is the only way anything can connect to an Exchange server so that is what we have to use.

The BlackBerry Enterprise Server has to have a ping time of less then 30ms to each exchange server or you are going to see message delays. This is the most common issue for message latency. If you have a fast WAN connection between the 4 sites then you should be fine, and would not need to put a BES in each location.
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Old 06-15-2006, 08:00 PM   #5 (permalink)
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Very helpful info - thanks Ash.

Our WAN is spread across 4 different locations in Australia. The connections are decent so I'm reluctant to spend on 3 more BES servers. So possibly back to the drawing board!

Any other ideas what could be causing this intermittent slowness (it should be noted that our average Exchange user mailbox size is well over 2Gb and we have over 500 users on the BES)??

Thanks again in advance
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Old 06-16-2006, 04:44 AM   #6 (permalink)
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What's the spec of the server?
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Old 06-16-2006, 05:15 AM   #7 (permalink)
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@gadler

According to RIM if you have more than 500 users on a BES connected to exchange you will also need to use:

1. SQL server instead of MSDE
2. Dual CPU server for the BES, more RAM is better

Alse keep in mind that with Exchange MAPI 1 user with a BB counts as a 3 ordinary users in the exchange. Can it be a dimensioning problem on the exchange side? It can be also a storage performance issue again on the exchange side.
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Old 06-17-2006, 09:58 PM   #8 (permalink)
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gadler,
A blackberry Enterprise Server picks up messages using MAPI notification which is received over UDP, the exchange server sends these notifications and BES picks up the message. Also every approx 20 minutes a rescan of mailbox is done for every user that is added to the BES, if the mailbox size is 2gb (which btw even Microsoft doesn't recommend) you will see delays as mailbox rescans are taking too long to complete and the thread that is serving this user will not forward any messages untill it finishes its work.

Delayed notifications can be checked by comparing the ratio of notification vs rescans. In a supported and correctly setup exchange environment 95-98 percent of messages will be picked up through notification and rest will be picked up using rescans.

If you have remote mail servers that will also cause mail delays. As mentioned by Ash 35ms is the supported configuration by Research In Motion anything after that is "best effort" support.
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Old 06-18-2006, 08:58 PM   #9 (permalink)
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Quote:
Originally Posted by bertiebassett
What's the spec of the server?
Our BES Server specs:
*Dell 2850.
*2 x 3.20Ghz Intel Xeon Processors
*2Gb memory
*plenty of disk space
*SQL 2000 (recently upgraded from MSDE to try improve performance)

WAN specs (ping time to Mail servers):
*Sydney Exchange Server - 1ms (BES located here)
*Melbourne Exchange Server - 13ms
*Brisbane Exchange Server - 15ms
*Perth Exchange Server - 55ms

We are going to be upgragding our WAN in the next few months which may improve things for Perth, but that still doesn't explain the 'slowness' in the other cities. To me, it seems more and more evident that our supersized mailboxes are causing the slowness issue and adding extra BES servers wont actually improve performance at all.

All of of your thoughts would be valued?

Also, do you think doubling the memory will improve delivery speeds?

Thanks in advance.
Gadler
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Old 06-19-2006, 03:36 PM   #10 (permalink)
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This is all good stuff, Though I haven't found a doc on adding a second server. I will be pointing the PHX BES to the BESMgmt DB tomorrow night..cross your fingers..

How many SRP's can be pointed to the same BESMgmt DB?
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