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CC.
Asked: 2010-05-20 08:28:58 +0800 CST

HP MSA 1000 SAN: Can I use 1 array/shelf?

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I'm planning some expansion on an HP MSA1000 SAN. My boss says that we need to have two separate arrays on the new enclosure, one for Bays 1-7, the other for Bays 8-14. Is there any reason that we need to do this?

My plan was to have the entire expansion shelf be 1 array, then create RAID 6 logical drives from that. I don't understand what splitting drives into separate arrays gain us. We don't have dual controllers, so there's no benefit there.

Thanks, CC

storage-area-network

1 Answers

  1. Best Answer

    MSA1000's are pretty old and are unfortunately limited to creating only 2TB virtual-disks/LUNs - so depending on what size of disks you're using then you could easily have to build more than one virtual disk.

    i.e. if you're using 300GB disks then 7 x 300 = ~2.1TB, you couldn't add an eighth drive to it, not in a usable way anyway - so having two blocks of this would mean you'd get at 2+2 TB - is that clear?

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