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Old 01-03-2006, 11:25 AM   #1 (permalink)
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Default BES Failover scenario

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We are looking for a quasi-hot failover scenario for one of our clients.

Currently the warm failover server does not have BES installed.

The scenario that I would like to explore is as follows:

1 BES server operational with the server name BES1 and the Service name - BES
A second BES server with BES services disabled with the server name BES2 and the service name BES.

Failover strategy - regularly grab settings from operations server and save to file. In the case of failure of the operational server, the second server has its services brought online and the updated settings will be imported at that time.

Has anyone ever tried this failover scenario?

Can these two servers co-exist on the network so long as the BES services are disabled on the "warm" box?

Assume latest version of BES.
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Old 01-03-2006, 01:25 PM   #2 (permalink)
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This scenario will work and is what I have used in the past. To make things easier. Host the database on a seperate server completely. Point both bes installations to the SQL database. If BES1 fails. Simply start services on BES2 and there will only be blip to the users. Do a search on this, btw, there is tons of information on this and it is known as a "knife edge cutover".

Now, what I am doing now is running bes 4.0 on two servers, each with it's own bes name and srp, both running production but I keep the user count down below 300 per server. If one server fails I simply get on the one working and move all users to the other BES by drag and drop and with 4.0, they will see the BES move and keep on working. This way, I have a working spare so I know it is working at all times. I can then fix the downed server and bring it back on line and move my users back.
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Old 01-03-2006, 01:56 PM   #3 (permalink)
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Thanks!
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Old 01-18-2006, 11:45 AM   #4 (permalink)
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Quote:
Originally Posted by udontknowjack
I simply get on the one working and move all users to the other BES by drag and drop and with 4.0
Possibly dumb questions. So far, I have run only a single BES instance and server. I am now being asked to examine failover scenarios. When you do moves, the BES you are moving from can be totally down? I assume this is because you are using a central BESMgmt DB. Does it migrate existing keys or does it regenerate new ones?
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Old 01-18-2006, 12:09 PM   #5 (permalink)
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Quote:
Originally Posted by Bjgrim
When you do moves, the BES you are moving from can be totally down? I assume this is because you are using a central BESMgmt DB. Does it migrate existing keys or does it regenerate new ones?
yes, the BES can be totally down. All user information, including keys, is stored in the database. Yes, we are using a central Database for both BES stored on a SQL server that is clustered so we have redundancy all around.
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Old 01-18-2006, 12:40 PM   #6 (permalink)
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I ran this architecture by a RIM representative and he agreed to it.

The only cost is the extra BES license.
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Old 01-18-2006, 01:07 PM   #7 (permalink)
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You know you don't have to have a second BES if you don't have tons of users. You can do pretty much what you suggested at the beginning of this thread. Just have a warm server with BES installed and configured like your production with services disabled and pointing to the database (hopefully on a remote sql server) and if production fails, just fire up services on your warm failover and your off and running. This works good for upgrading as well as noone is down while you do i.
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Old 01-18-2006, 01:52 PM   #8 (permalink)
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absolutely... but like everything else - every client is different and their needs are different.

Some are really nutty about failover and others aren't. We haven't made a decision yet as to hot/warm failover... but either way, we should be alright.

Thanks all for the help! This was a very useful thread for me
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