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4 Posts
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527
October 18th, 2013 10:00
Can we map one device to two FA's"(1a,16a),(2a,15a)" with two lun ID's in Dmax-4 ?
Hi,
Can we map one device to two FA's"(1a,16a),(2a,15a)" with different lun ID's in Dmax-4 ?
If the answer is yes. Is it EMC recommended?
Please suggest.
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briand3
10 Posts
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October 23rd, 2013 08:00
Also depending on the host it will need to potentially have some SCSI-3 flag set on the device. There also may be initiator flags that need to get set depending on what is already set on the FA port. In this case the host connectivity guide is definitately your friend.
Like Mark said though, having different HLU / scsi id's is painful. If it's an ESX cluster it can cause you to need to shut down the VM in order to do a VMotion due to having different LUN ids from a host perspective in a cluster.
cincystorage
2 Intern
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467 Posts
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October 18th, 2013 11:00
Yes, it is possible and shouldn't be a problem - but I don't recommend it. I suggest you do your best to keep them consistent across FAs so that you always know you're looking at the right then when on the host. The host's scsi id will be right for one fa port and wrong for the other, and that can cause administrative headaches sometimes..
gurram_venkatra
4 Posts
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October 18th, 2013 11:00
Hi Mark,
Thanks for your reply.
One of my client has two servers . One server(01) zoned to (7c:0,10c:0) and another server(02) zoned to (7a:0,10a).
My client asking me
Detach device from server (01) and attach that device to server (02)
The problem is, that device has attached to two servers(01) and (03) through FA (7c:0,10c:0).
In this case, can we map one device to two FA's with two lun ID's or shell is zone server(02) to (7c:0,10c:0).
Please suggest me.
dynamox
9 Legend
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20.4K Posts
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October 18th, 2013 12:00
you can map to multiple FAs at the same time, if you are going to also mask that device to multiple hosts at the same time it assumes you are setting up some kind of cluster.