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WD Red WD40EFRX - hard drive - 4 TB - SATA 6Gb/s

Mfg. Part: WD40EFRX | CDW Part: 3123305 | UNSPSC: 43201803
WD Red WD40EFRX - hard drive - 4 TB - SATA 6Gb/s
$188.99Advertised Price
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800.800.4239
Mon-Fri 7am-7:30pm CT
Availability:In Stock
Ships today if ordered within 1 hrs 1 mins
  • Hard drive
  • 4 TB
  • internal
  • 3.5"
  • SATA 6Gb/s
  • buffer: 64 MB
  • for My Cloud EX2; EX4
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Recommended Warranty

Product Overview
Main Features
  • Hard drive
  • 4 TB
  • internal
  • 3.5"
  • SATA 6Gb/s
  • buffer: 64 MB
  • for My Cloud EX2; EX4
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.

Technical Specifications
Specifications are provided by the manufacturer. Refer to the manufacturer for an explanation of the print speed and other ratings.
Bay Required
Form Factor: 3.5" x 1/3H
Form Factor (metric): 8.9 cm x 1/3H
Total Qty: 1
Type: Internal

Environmental Parameters
Max Operating Temperature: 149 °F
Min Operating Temperature: 32 °F
Shock Tolerance Operating: 65 G @ 2 ms
Shock Tolerance Storage: 250 G @ 2 ms
Sound Emission: 25 dBA

Header
Brand: WD
Compatibility: Mac , PC
Manufacturer: Western Digital Retail
Model: WD40EFRX
Packaged Quantity: 1
Product Line: WD Red

Interface Provided
Connector Type: 7 pin Serial ATA
Qty: 1
Storage Interface: Serial ATA-600

Miscellaneous
Compliant Standards: RoHS
MTBF: 1,000,000 hour(s)

Service
Support Details Full Contract Period: 3 years
Support Details Type: Limited warranty

Storage
Type: Hard drive

Storage Hard Drive
Capacity: 4 TB
Features: 3D Active Balance Plus , Advanced Format technology , IntelliPower , NAS compatible , NASware technology , Native Command Queuing (NCQ)

Dimensions & Weight
Depth: 5.8 in
Height: 1 in
Weight: 23.98 oz
Width: 4 in

Service & Support
Type: 3 years warranty

Hard Drive
Buffer Size: 64 MB
Compliant Standards: S.M.A.R.T.
Data Transfer Rate: 600 MBps
Form Factor: 3.5" x 1/3H
Form Factor (metric): 8.9 cm x 1/3H
Form Factor (Short): 3.5"
Form Factor (Short) (metric): 8.9 cm
Hard Drive Type: Internal hard drive
Interface: Serial ATA-600
Internal Data Rate: 150 MBps
Load Unload Cycles: 600,000
Non-Recoverable Errors: 1 per 10^14
Storage Interface: Serial ATA-600

Power Consumption
Mode: Read
Value: 4.5 Watt



Mode: Write



Mode: Idle
Value: 3.3 Watt



Mode: Sleep
Value: 0.4 Watt

Product Reviews
WD Red WD40EFRX - hard drive - 4 TB - SATA 6Gb/s 4.8 5 6 6
Great drives Nice and not too expensive 4TB drive. Used for QNAP June 3, 2015
Very reliable drive After 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. February 11, 2015
This product is a great value I 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. January 28, 2015
Best bang for the back We use these drives to populate our iSCSI servers in a RAID 6 configuration. Quality is consistent and failure rate confirms to posted MTBF. Purchased eight of them recently and no issues. November 12, 2014
Great value We replaced some WD Black 2TB drives with these 4TB Red models in our NAS. No performance degradation has been seen. December 4, 2013
Good Drives. Time will tell about reliability! I used 4 of these in a Netgear NAS box for backup purposes, so no live critical data. So far they have been humming along fine with no failures. They seem to be quiet, cool and so far a very reasonable investment.I prefer to buy drives at CDW vs. the other places due to packaging alone. I have not had a DOA from them yet. November 13, 2013
  • 2015-07-05T07:47:53.534-05:00
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