WD Red NAS Hard Drive WD40EFRX - hard drive - 4 TB - SATA 6Gb/s
Mfg # WD40EFRX
CDW # 3123625
Quick tech specs
- Hard drive
- internal
- SATA 6Gb/s
- for My Cloud EX2; EX4
- 4 TB
- 3.5"
- buffer: 64 MB
Know your gear
WD's exclusive NASware technology, built into every WD Red hard drive, improves NAS storage performance by reducing common hard drive concerns in NAS systems including concerns for things like compatibility, integration, upgradeability, reliability and cost of ownership that are experienced with a hard drive designed for desktop computers.
Enhance your purchase
WD Red NAS Hard Drive WD40EFRX - hard drive - 4 TB - SATA 6Gb/s is rated4.81 out of5 by16.
Rated 5 out of 5 bygregp from Great drivesNice and not too expensive 4TB drive. Used for QNAP
Date published: 2015-06-02T00:00:00-04:00
Rated 5 out of 5 byGatorEd from AWESOME PRODUCTWe have been updating our back up systems and are using these drives in our NAZ Box! Great choice!
Date published: 2015-12-15T00:00:00-05:00
Rated 5 out of 5 byJoeC from Used with Synology DS1817+I purchased WD Reds for my DS1817+ due to the price and reliability of these drives. No issues so far!
Date published: 2017-05-31T00:00:00-04:00
Rated 5 out of 5 byikoi from Good driveExpansive drive, but it worth it.Great drive. I would recommended.
Date published: 2016-01-12T00:00:00-05:00
Rated 5 out of 5 byScott from Very reliable driveAfter burning through several different makes and models of drives for our NAS systems, we finally settled on these Red drives, and thus far I have had a zero failure rate.
Date published: 2015-02-10T00:00:00-05:00
Rated 5 out of 5 byKP1123 from Good reliable drivesI've never had one of these drives fail on me. I most often use them in large RAID configs in our NAS hardware.
Date published: 2016-08-24T00:00:00-04:00
Rated 5 out of 5 byTempestK from Great valueWe replaced some WD Black 2TB drives with these 4TB Red models in our NAS. No performance degradation has been seen.
Date published: 2013-12-03T00:00:00-05:00
Rated 5 out of 5 bympz9 from Great Drive for NASWe use the WD Red drives in all of our NAS deployments. Drives have been extremely reliable.
Date published: 2016-01-26T00:00:00-05:00
Rated 5 out of 5 byairbarron33 from This product is a great valueI bought 4 of these to put into a NAS for backup. Installation was a breeze. All 4 worked perfectly and have been reliable. The price is great for 4TB of storage space.
Date published: 2015-01-27T00:00:00-05:00
Rated 5 out of 5 byricky777 from Excellent External DriveUse: Synology RackStations NASExcellent DrivesHave been using these drives for awhile now(few years)with no failures to date.I would definitely recommend these for a NAS. Thank YouRick
Date published: 2016-11-16T00:00:00-05:00