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| MQ 6.0 installation and MSCS |
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| spuigi |
 Posted: Tue Mar 06, 2007 7:04 am Post subject: MQ 6.0 installation and MSCS |
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Newbie
Joined: 06 Mar 2007
Posts: 2
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Hi,
Had a bit of an argument with an outside consultant and came here (and few other places) to confirm his claims. Im new to MQ on MSCS and he is a senior consultant but I find it hard to believe his claims.
Can anyone confirm these claims:
Is it somehow harmful to install MQ 6.0 on a cluster node so that the datafiles go directly to the disk shared by the cluster (not the quorum disk of course)?
The point to his claim was that when you have a QM which is clustered in MQ and is also on a MSCS-cluster, you cannot have MQ installed so that the datafiles go directly on the shared disk. Sounds preposterous to me.
Another claim was that the MQ MSCS resources should be in the default MSCS group with the MSCS default resources. This is MSCS issue of course but it's not the recomended to do an MSCS cluster this way. So I was just wondering if MQ is somehow exception to the rule. Personally, it sounds like a bunch of BS to me.
Last question is: when using MSCS, is it in fact preferable to install MQ in such away that the datafiles go directly to the cluster shared disk? Considering that every resource in MQ will be clustered on MSCS.
Anyways, thanks for any help in advance,
Regards,
Spuigi |
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| jefflowrey |
| Posted: Tue Mar 06, 2007 7:09 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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If this is a consultant, they should be able to provide justfication for their recommendations. Even if it's just "in my experience".
If you read the documentation on putting a queue manager into an MSCS cluster, then you'll see that there is a step that will *migrate* the queue manager data files ONTO the shared disk.
If you *install* MQ in such a way that the default datafiles directory is on the shared disk, then that command will likely fail... (or at least, actually do nothing.) You will also likely have issues with NOT running a queue manager under MSCS, which one would like to be able to do.
But there are instructutions (IIRC) for creating a queue manager under MSCS rather than creating it and then moving it into MSCS.
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I am *not* the model of the modern major general. |
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| spuigi |
| Posted: Tue Mar 06, 2007 7:45 am Post subject: |
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Newbie
Joined: 06 Mar 2007
Posts: 2
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| jefflowrey wrote: |
If this is a consultant, they should be able to provide justfication for their recommendations. Even if it's just "in my experience".
If you read the documentation on putting a queue manager into an MSCS cluster, then you'll see that there is a step that will *migrate* the queue manager data files ONTO the shared disk.
If you *install* MQ in such a way that the default datafiles directory is on the shared disk, then that command will likely fail... (or at least, actually do nothing.) You will also likely have issues with NOT running a queue manager under MSCS, which one would like to be able to do.
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Yes well, "in my experience" and the claim that clustered QMs ( in MQ) would not work was in fact his justification. No explanations for the later claim though. 
The thing of it is that we have other clusters running MQ which have been installed so that the datafiles go directly to the shared disk. So Im just wondering if we are in trouble there?
In any case on these system you don't have to migrate queue managers to the shared disk. Which is of course one thing less to worry about.
Thanks for your quick reply,
Spuigi |
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