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WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive - Bulk
  • Storage for 1 to 8 bay NAS solutions
  • NASware 3.0
  • 3D Active Balance Plus
  • Longer warranty coverage
  • $219.99
  • $154.00
  • Save: $65.99 (30%)
  • Free Shipping (restrictions apply)


Runs cool, quiet, fast. Bought 10 of these and all of them came nicely packed. Threw them into a synology 2212+ and the only difficulty was screwing all drives in the hdd plate and putting them into the nas. Write speed in raid6 is about 110mb sustained over our 1gbps network so very happy with the speeds. It has been running for about 2 months and no issues yet. The enclosure stays nice and quiet and cool considering there's 10 drives in there! My dell 1u rack server is louder than 10 of these drives. Will be buying 12 more of these to put in the synology expansion unit.


Not a con but a comment to the user who had the drives go on and offline. Do not and I repeat, do not use these in a software raid. Get a hardware raid card from either LSI, Intel or dell (then again they all use LSI chips). Software raid will cause issues as I have found out in one of my raid setups.

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  • Noritaka S.
  • Verified Owner
  • Owned For: 1 month to 1 year

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