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Important to have matching HDDs with RAID setup?

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December 1, 2011 5:33:10 PM

Are there benefits to having matching HDD for a RAID setup? I'm currently using an Intel 510 SSD, and debating staying with Intel or going with Crucial, but it's an easy decision if their is a benefit to having matching disk drives.

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a c 415 G Storage
December 1, 2011 6:03:27 PM

You can mix drive speeds and types with RAID if you want to. Most RAID controllers will ignore any excess space on the larger drive (ie, if you put a 320GB drive and a 300GB drive into a RAID set then 20GB of the 320GB drive will be unused). Performance will be a compromise between the slower and faster of the two drives.
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December 1, 2011 7:09:33 PM

all drives in a RAID should be identical drives. putting dissimilar drives together in a RAID will work but is never suggested.
the slowest and/or smallest drives will hold everything back, hindering the RAID's performance and/or logical drive size.

combining a 1TB and a 3TB into a RAID 0 or 1 will essentially waste 2TB of the 3TB . combining a SSD and HDD into a RAID of any kind will essentially waste the SSD's speeds.
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December 8, 2011 3:51:36 AM

Best answer selected by Jsplinter.
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