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тАО11-02-2005 09:16 PM
тАО11-02-2005 09:16 PM
MSA1500 - Active/Active Yet?
Just after confirmation - my understanding is that MSA1500 with the current FW V.4.98 does not support Active/Active controller configuration. Could someone please confirm this for me. I obviously do not get to play much with the MSA1000/1500s :(
Anyone knows when V5.x of the FW is expected and will it definitely bring the controllers to behave "Active/Active" for different LUNs?
Regards,
Saket.
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тАО11-02-2005 09:36 PM
тАО11-02-2005 09:36 PM
Re: MSA1500 - Active/Active Yet?
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тАО11-02-2005 10:49 PM
тАО11-02-2005 10:49 PM
Re: MSA1500 - Active/Active Yet?
MSA1500 is not supported in active/active mode yet
see
http://h18000.www1.hp.com/products/quickspecs/11945_div/11945_div.pdf
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тАО11-03-2005 01:17 AM
тАО11-03-2005 01:17 AM
Re: MSA1500 - Active/Active Yet?
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тАО11-03-2005 02:01 AM
тАО11-03-2005 02:01 AM
Re: MSA1500 - Active/Active Yet?
any particular reason as to why HP-UX is only supported in single controller configuration? Also, the limitation on the number of cluster nodes(Windows) that can connect to the MSA1000/1500cs - is it just a test/certification issue or one that is strictly technical in nature?
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тАО11-03-2005 06:24 AM
тАО11-03-2005 06:24 AM
Re: MSA1500 - Active/Active Yet?
As for the Windows clustering, I'm not sure, but I'm sure it's a combination of both techical reasons, testing capacity, and the idea that if you have more than 16 nodes, you should be in an EVA instead of an MSA anyway - ie: the target market is too small to bother with the testing.
Regards,
Vince
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тАО11-04-2005 07:28 AM
тАО11-04-2005 07:28 AM
Re: MSA1500 - Active/Active Yet?
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тАО11-04-2005 07:33 AM
тАО11-04-2005 07:33 AM
Re: MSA1500 - Active/Active Yet?
Other than cache-centric arrays, they all work that way... even from our competitors.
Regards,
Vince
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тАО11-04-2005 07:40 AM
тАО11-04-2005 07:40 AM
Re: MSA1500 - Active/Active Yet?
true for the VA71x0, which has only one redundancy group (RG1).
The VA74x0 has two RGs. In a two-controller configuration, each controller is responsible for one RG - so you can divide your load through both controller's performance paths, unless you only make use of one LUN (leaving the other RG empty).
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тАО11-18-2005 11:29 PM
тАО11-18-2005 11:29 PM
Re: MSA1500 - Active/Active Yet?
Yes, we loose half of the cache capacity, but wins in controller performance, which is weak (30K I/O's) in MSA.
Also can you point me to competitors models, which work in such "two pathes one controller" way, as you say? I didn't find such info nor in IBM, nor in EMC or even Adaptec documentation...
Thank you in advance!