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07-12-2012 03:37 AM
07-12-2012 03:37 AM
SAN pre-purchase advice
Hello,
We are about to buy a HP P2000 iSCSI MSA Dual Controller SAN solution. Pricing is very attractive right now with HPs 50% cashback offer. We will be maxing out the 12 bays with 2TB drives = total capacity 24TB.
Before we go ahead I just have a quick question Im hoping someone can answer for me..........
>> As I understand it - RAID covers us for drive failure and the dual controller for controller failure - but how do we implement this? Do I need to split into 2 seperate RAID arrays (12TB each) - one controller for each and mirror it with Remote Snap? Or is there a way I can use my full capacity but still be covered for controller failure.
Many thanks,
Mark
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07-12-2012 11:33 PM
07-12-2012 11:33 PM
Re: SAN pre-purchase advice
Having dual path from each host involved here to the MSA & having a multipathing software configured will serve the purpose of controller failure redundancy.
Hari
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07-13-2012 02:52 AM
07-13-2012 02:52 AM
Re: SAN pre-purchase advice
Hi Hari,
Thanks for the reply. I understand a bit better now.....
So my setup would be SAN --- 2 cables --- SERVER (CentOS using the Device-Mapper Multipath feature - http://www.centos.org/docs/5/html/5.2/DM_Multipath/)
And I can get the full capacity.
Sounds like the way to go.
Thanks again,
Mark :)