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Important to have matching HDDs with RAID setup?

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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  1. Best answer
    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.
  2. 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.
  3. Best answer selected by Jsplinter.
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