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MQ Clustering nodes

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gstokes

Posted: Tue Sep 15, 2009 9:46 am Post subject: MQ Clustering nodes

Apprentice

Joined: 08 Jan 2007
Posts: 38

In MQ 7.0 does it support multiple nodes pointing to a single storage media? Apparently it does not in MQ 6.0.

Vitor

Posted: Tue Sep 15, 2009 9:51 am Post subject: Re: MQ Clustering nodes

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

gstokes wrote:

In MQ 7.0 does it support multiple nodes pointing to a single storage media? Apparently it does not in MQ 6.0.

Do you mean nodes in terms of failover nodes? If so the answer is not directly.

Both versions support backup queue managers, and can be used with all failover software products like any other software. Support pacs are available to use WMQ under most (all?) of these failover systems.
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WMBDEV1

Posted: Tue Sep 15, 2009 10:44 am Post subject:

Sentinel

Joined: 05 Mar 2009
Posts: 888
Location: UK

Vitor,

Sorry to disagree with you again (third time today!) but.....

the latest Mq 7 refresh pack supports qm failover / standby qms without the need of a support pack or external clustering software. It's called multi instance qms now... http://www.mqseries.net/phpBB2/viewtopic.php?t=50560

mqjeff

Posted: Tue Sep 15, 2009 11:33 am Post subject:

Grand Master

Joined: 25 Jun 2008
Posts: 17447

There is no Active-Active configuration in v7.0.1. You can not run two instances of the same queue manager on different nodes at the same time pointing to the same storage.

Ergo, you are either both right or both wrong - as this is not fundamentally different in v7 than it was in v6. It's just easier and more supported in v7.

You only get simultaneous access of the same queue from multiple nodes on zOS when you have a sysplex shared queue.

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