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HP MSA2000 Storage Extension

Posted on 2012-12-23
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Last Modified: 2013-02-16
Hi,

I've been trying to find appropriate docs on this, but somehow either Google doesn't have access to the right pages, or I'm using the wrong search keywords ...

We have a customer with an MSA 2000 storage which is now to be extended. They have ordered a second drive rack which now needs to be connected to the existing storage. Cables etc. are provided, but can the new rack be attached to the existing one without shutting down, or willl the storage (and with it, all running VMs) have to be taken offline (or even switched off) ?

Thanks, Garry
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Question by:Garry-G
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by:Chris
Chris earned 50 total points
ID: 38716957
What is the second shelf you're adding? Is it an MSA70?

I've safely detached and re-attached an MSA70 to an MSA2000 with a live network running. Just plug in the SAS cables from the IO modules on the MSA70 to the controllers in the MSA2000 and the controller in the MSA2000 will simply see the addition of a second shelf and a pile load of additional drives.

Having said this, personally, despite hot swapping being supported, I tend to favour a shutdown of the network. This prevents any human error or other unforseen issue causing an unexpected outage. Obviously this is a choice you will have to make.
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by:Andrej Pirman
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ID: 38716971
Just to add my 5 cents:
I have seen issues with (although supported) live expansion of storage, where process took over 2 weeks and seems never ended. Actually it finished into non-recognized bunch of disks, so I vote for shutting everything down during the process, too.
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Garry-G earned 0 total points
ID: 38717316
Expansion shelf is "HP StorageWorks Modular Smart Array 2000 Dual I/O" ... AFAIK the MSA70 is a newer model and not compatbile with the core system ... HP model of the main box is MSA2312fc ...
Personally I'd prefer having the main system down no matter what the docs say, though this will be rather problematic, getting a maintenance window currently ;)
Any references to official HP docs about this would be greatly appreciated ...
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by:Garry-G
ID: 38896170
Without reliable references to official documentation, we opted to shut down everything and go the safe way ...
Anyway, turns out that one of the two controllers died while going the "safe way" ... during the following HW replacement, a technician doing the controller replacement did do a hot-swap, so I reckon plugging in the new storage case would have been OK ...
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