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I've currently got a lovely working server that has an LSI 9265-8i RAID card in it with 4x1TB RE4 drives, also running CacheCade Pro 2.0 with 2x180GB SSDs in RAID1. I currently have the main array running on RAID6, as much as I like it. I think running RAID 0+1 would be a better choice for the speed and making the server more responsive. Is there a way to 'migrate' my array from '6 to '0+1 without a full backup and restore (which I'd take a full backup anyway if all went wrong)?

The total available space will be the same (2TB) but I'm guessing my potential reliability will go down a little (if 2 drives fail simultaneously on the same stripe opposed to any 2 drives failing). Can anyone shed some more light on the subject please?

Thank you for your help.

Chrisjc
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2 Answers2

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When we researched a similar problem using an LSi 9271-8i, there wasn't a method of accomplishing this; if there were, I'd imagine it would be the kind of thing that would take an incredible amount of time as well.

And yes, you'll definitely notice a read/write speed increase changing to RAID10, but your reliability will effectively drop to 1 drive failure tolerated, as opposed to your current 2 drive in RAID6.

jski
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No, there is no such method to convert a RAID6 into a RAID10 on LSI. You have to backup, recreate your RAID and restore the data.

As jski noted, your reliability will drop, while your speed will increase.

MichelZ
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