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| career |
 Posted: Mon Nov 05, 2007 7:03 am Post subject: Moving queues to SAN |
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Apprentice
Joined: 09 Jul 2007
Posts: 36
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Hi,
We are having two queue managers on the local hard disk ( application server). Is it possible to move the queue from this local disk to SAN? If it is possible can any one suggest me how it can be done?if they are moved will it effect the performance of queue manager? Any one please suggest |
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| jefflowrey |
| Posted: Mon Nov 05, 2007 7:05 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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See the support pack for HA configuration on Unix, and the instructions for configuring MSCS on Windows.
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I am *not* the model of the modern major general. |
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| Posted: Mon Nov 05, 2007 7:20 am Post subject: |
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Apprentice
Joined: 09 Jul 2007
Posts: 36
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Hi jefflowrey and others,
I have gone through MC91 support pack. But MC 91 is for HA and i think its for automatic fail over of Queue manager to another node. here what we are trying to do is move the queues to SAN. Is it possible? if possible please help me in find the link. |
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| JosephGramig |
| Posted: Mon Nov 05, 2007 7:31 am Post subject: |
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Grand Master
Joined: 09 Feb 2006
Posts: 1244
Location: Gold Coast of Florida, USA
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Hmmm, well it talks about how to put the QMGR on SAN. It does not matter that in their case they are doing that for HA. It will work for you too and you just don't need to mount it from another machine.
Most folks in UNIX do put the QMGRs and logs on SAN. Make them two different file systems.
/var/mqm/ (to hold everything but logs)
/var/mqm/log
_________________
Joseph
Administrator - IBM WebSphere MQ (WMQ) V6.0, IBM WebSphere Message Broker (WMB) V6.1 & V6.0
Solution Designer - WMQ V6.0
Solution Developer - WMB V6.1 & V6.0, WMQ V5.3 |
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| Posted: Mon Nov 05, 2007 7:46 am Post subject: |
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Apprentice
Joined: 09 Jul 2007
Posts: 36
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Hi joseph and others,
Mc 91 talks abt failing over the queue manger to another. what i was looking at is with out moving (failingover) the queue manger is it possible to move local queues of queue manger to SAN.
any command which is like given below (like mentioned in MC91) to move queues to SAN.
export MQHAFSDATA="/MQHA/<qmgr>/data"
export MQHAFSLOG="/MQHA/<qmgr>/log"
first of all is it possible and if so how can we do tht?  |
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| JosephGramig |
| Posted: Mon Nov 05, 2007 11:20 am Post subject: |
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Grand Master
Joined: 09 Feb 2006
Posts: 1244
Location: Gold Coast of Florida, USA
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Since you haven't said you are not UNIX, then before you create your QMGR, mount the SAN file systems at the points I mentioned. To move the files of an existing QMGR.
- Stop the QMGR(s)
- Back everything up 
- Tar the file system /var/mqm/qmgrs
- Delete /var/mqm/qmgrs
- Mount the SAN file system at /var/mqm/qmgrs
- extract the tar file back into /var/mqm/qmgrs (make sure all file ownerships remain as they were before
Repeat process for /var/mqm/log.
Your UNIX SA should know how to do this as it is not a WMQ thing.
The performance will be determined by the SANs performance. The stability will also be determined by the SANs stability.
You may be able to go from LogWriteIntegrity=TripleWrite to LogWriteIntegrity=SingleWrite which also depends on the quality of SAN.
_________________
Joseph
Administrator - IBM WebSphere MQ (WMQ) V6.0, IBM WebSphere Message Broker (WMB) V6.1 & V6.0
Solution Designer - WMQ V6.0
Solution Developer - WMB V6.1 & V6.0, WMQ V5.3 |
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