6 SSD's - 3 RAID 0 drives setup in a RAID 5 array

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psamodio

Commendable
Apr 22, 2016
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Hi. I am trying to increase the performance of my boot drive by setting up two SSD's in RAID0. However, I am also trying to guard against the absolute failure of the array if one drive fails. My thought is to configure 6 SSD's in the following manner - create 3 RAID0 arrays (2 drives per RAID0 array) then create a RAID5 array using the resulting three drives. Does anyone have any thoughts/experience with this sort of setup? Am I crazy or will this actually work to improve performance as well as build in some redundancy?

Thanks in advance!!
 
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psamodio

Commendable
Apr 22, 2016
3
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1,510
Thanks for the response! I will be using an LSI MegaRAID SAS 9260-4i for the RAID5. However, your question prompted me to have another question...will I need to use two different RAID controllers? One for the RAID 0 and a different controller for the RAID5?
 
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mbze430

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Feb 9, 2015
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9260-4i is a 4 port card meaning it only has 1 SAS port. Using a SAS to SATA breakout cable will get you 4 ports. You'll need a 2nd card if you want more drives.

On my ZFS server I run 2x 8 ports Running them in RAID10 (Striped with Mirror)

if you want to run RAID51 (Single Parity + Mirror) which seems to be what you are saying.... then you need another card.
 
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