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Old 02-23-2009, 01:43 PM   #1 (permalink)
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Default 2 BES' in 2 datacenters load balanced

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We have 2 BES' in 2 data centers. Let's call them CAbb1 and NVbb1 with 2 backups, CAbb2 and NVbb2. CAbb1 and CAbb2 are in CA DC, NVbb1 and NVbb2 are in NV DC.

We currently want a 50-50 load balance between the 2 DC's. We currently have a Gig-E connection between them with 5ms response times. We were thinking of this scenario for the event a whole DC goes down.

If NV goes down, we can move NVbb1's services to CAbb2 and then if CA data center goes down, we can move CAbb1's services to NVbb2. So this means that CAbb1 and NVbb2 have the same SRP key and then NVbb1 and CAbb2 have the same SRP key. Both bb2 servers have cold services that we start in the event a server/whole DC drops.

Does anyone currently use this scenario? We need DR with 50-50 load balance between 2 data centers.
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Old 02-23-2009, 01:54 PM   #2 (permalink)
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Only issue is if a DataCenter is brought back online with out turning off BES services first.
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Old 02-23-2009, 02:09 PM   #3 (permalink)
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We can change all the services between all 4 servers to Manual.. we're a huge enterprise and can't risk being down at all.. If we set to Manual, this should be roughly the best scenario for each DC right?

I know RIM has DR guides and plans, but they all seem to be 100%-0% not the 50-50 split like my company wants.
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Old 02-23-2009, 02:11 PM   #4 (permalink)
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What if the DC internet only is disconnected and the BES is not rebooted?

The services will be started.

Me like devils advocate.
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Old 02-23-2009, 02:17 PM   #5 (permalink)
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Well, we have a 3rd party company that monitors all our servers and all the services and the event viewer for all our servers and notifies us of everything! We have roughly 1000 servers.

Let's say CADC internet goes down. I can make a batch file that if just the internet goes down, it'll stop all the services. Then I do a manual fail over. Internet comes back up on CADC, services are still stopped.
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Old 02-23-2009, 02:40 PM   #6 (permalink)
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Well sounds like you have your bases covered with SRP.

What are you doing about the DB?
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Old 02-23-2009, 03:10 PM   #7 (permalink)
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the DB is replicated in realtime between both DC's.. both CAbb1 and NVbb1 point to the same DB.

(rather, they will point to the same DB once we've redone CAbb1).. Currently they are on separate DB's because CAbb1's DB is very messed up, so we're migrating people to NVbb1 and wiping one at a time.. GG!
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Old 02-24-2009, 02:35 AM   #8 (permalink)
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sounds like a nice setup, how many BES users are there ?

is the email system the same, ie 50-50 load balanced between DC's ?
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Old 02-24-2009, 11:53 AM   #9 (permalink)
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bes 1 has over 600, bes 2 has about 10 so far.

The email system is load balanced 50-50.. pretty much everything is load balanced 50-50..

I dont know the familiars with the exchange system because I'm not the exchange admin, so if you had any questions, I can ask them and get back to you.
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Old 02-24-2009, 12:27 PM   #10 (permalink)
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The only possibility of load balancing I see is that you have 50% of the users created on one server and the other 50% the other server. That means two DBs and two SRPs. There is no automatic "Clustering-like" load balancing solution for BES.

Last edited by freakinvibe : 02-24-2009 at 12:31 PM.
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Old 02-24-2009, 12:50 PM   #11 (permalink)
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why would we need 2 dbs? the blackberrys are attached to the srp key regardless of DB..

this is why you must wipe a device when switching between 2 bes that have different db's.. because the SRP attached to the device is different.

If you have 1 shared DB but 2 srp's, you should be able to move devices seemlessly between the 2 bes' no?
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Old 03-03-2009, 01:36 PM   #12 (permalink)
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One more thought, BES MDS-CS mappings will need to change when bringing up the DR BES.

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Old 03-05-2009, 11:05 PM   #13 (permalink)
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This may not apply to you, but if you are on a Windows domain, how are you naming your servers the same thing? Wouldn't primary/secondary need to be named exactly the same thing?
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