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MQSeries.net Forum Index » Clustering » High Availability & Fail over

High Availability & Fail over

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rkford11

Posted: Wed Oct 24, 2007 8:08 am Post subject: High Availability & Fail over

Partisan

Joined: 06 Jun 2004
Posts: 316

We are planning on implementing HA solution for our MQ environment to acheive failover of queue manager. Apart from reduced operating costs, does active-standby configuration buy us anything more over active-active configuration. Please suggest me the pros and cons of the two available configurations.

Thanks

jefflowrey

Posted: Wed Oct 24, 2007 12:25 pm Post subject:

Grand Poobah

Joined: 16 Oct 2002
Posts: 19981

Active/Active is always implemented as paired-active/passive.
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I am *not* the model of the modern major general.

rkford11

Posted: Thu Oct 25, 2007 10:28 am Post subject:

Partisan

Joined: 06 Jun 2004
Posts: 316

Thanks Jeff. In general, What would be the restart time difference between the two configurations. i.e time taken by passive system to take over failed system in active/passive config and time taken by active system to take over failed system in active/active config.

Thanks

PeterPotkay

Posted: Thu Oct 25, 2007 10:42 am Post subject:

Poobah

Joined: 15 May 2001
Posts: 7722

Its the same thing. A QM can only run on one node. Its gonna take the same amount of time for QM1 to failover from Node A to Node B regarldess of whether Node B has another unrealted QM already running there or not.

How long that takes depends on your exact setup and how many connections the QM needs to shutdown and the exact cause of the failover and etc etc etc
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Peter Potkay
Keep Calm and MQ On

senMQ

Posted: Sat Oct 27, 2007 5:59 pm Post subject:

Acolyte

Joined: 14 Aug 2006
Posts: 66
Location: Palo Alto, CA

Support pac MC91 is a good place to start:
http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg24011869

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