External RAID1 array for my iMac -- Enclosure + drives or just go with a WD MyBook Duo?

Discussion in 'Mac Accessories' started by Justin L Franks, Mar 28, 2016.

  1. Justin L Franks macrumors member

    Sep 24, 2013
    I'm looking to add an external RAID1 array to my iMac for some peace of mind. I need an absolute bare minimum of 3 TB (so 2 x 3 TB), but at least 4 TB is what I am really looking for. More would of course be nice but it seems that drive prices increase pretty rapidly past 4 TB per drive (even the price per TB looks to increase past 4 TB), and since I need two drives things could quickly get very expensive. USB 3.0 is fine since this is mostly for backup purposes, but a Thunderbolt connection would be nice if it doesn't considerably increase the price.

    The Western Digital MyBook Duo 8TB (the standard USB 3.0 version, not the Thunderbolt one) is going for just $325 right now which is an incredible deal. It's actually a bit cheaper than a 2-bay RAID enclosure and a pair of 4 TB drives. Is there any reason not to just go with this over a bare RAID enclosure and getting the two hard drives separately? I've built PC's before and have also built Linux servers with RAID1 and RAID10 arrays, so any set-up complexity isn't a problem.

    Any recommendations on a RAID enclosure would also be great -- I've only dealt with internal RAID arrays and it's been a few years since I've built a server, so I'm not up to date with what's available now. I'm trying to keep total costs under $500.
  2. satinsilverem2 macrumors 6502a


    Nov 12, 2013
    Richmond, VA
    I would go with the My Book Duo. The drives inside it are the WD Red NAS drives which are perfect for your needs. Plus you'll be hard pressed to find 8TB of storage in RAID for less than $500. Thunderbolt isn't really necessary unless the drives are going to be used for other purposes like Video production.
  3. redmac macrumors regular

    Apr 7, 2008
    San Francisco
    With a RAID 1 setup, Thunderbolt won't be faster than USB 3.0 (unless you use SSDs with the Thunderbolt case). I would go with the My Book Duo too.

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