WD Red 5TB NAS (WD50EFRX) HDD Review

  1. Introduction and Specification
  2. Closer Look
  3. Test Bench and Testing Methodology
  4. AS SSD Benchmark
  5. ATTO Benchmark
  6. AIDA64 Benchmark
  7. Anvil Benchmark
  8. Boot Load Test
  9. Transfer Tests
  10. CrystalDisk Mark Benchmark
  11. HDTune Pro Benchmark
  12. Futuremark HDD Benchmarks
  13. Conclusion
  14. Online Purchase Links

NAS drive solution from WD and Seagate have been around for a while, and recently introduced two storage capacity variants- WD50EFRX 5TB and WD60EFRX 6TB. We’re going to take a look at the 5TB Red Variant.

To keep with the storage demands with the SOHO environment- including the never ending media collection that people grow from time-to-time, the newer variants are made for 1-to-8 bay NAS unit solutions. With a 5TB, you get a total of up to 40TB and with 6TB you get up to 48TB.

For now, we will be testing it as a single drive in our test bench. But the WD EX2 two-bay NAS review will include performance benchmark in different setups.

WD_RED_NASWARE_1These NAS HDD drives use ‘NASware 3.0’ features, and WD promotes these drives with enhanced reliability and lower operating temperatures. A 3 Years warranty may be unsettling for some people, but the higher RPM/probably more expensive variant ‘WD Red Pro’ are with a 5-year warranty. These drives also come with ‘premium support’ with 24/7 support line, most likely for countries like the United States. There are many countries listed, but I really feel that India should have a dedicated support line for WD Red and Red Pro.


WD really wants to push this drive so that many types of users would get these for specific purposes. But to be fair, it does help people (even power users of their respective tech field)to understand the benefit they would get from this.


Specifications5 TB
Model numberWD50EFRX
InterfaceSATA 6 Gb/s
Formatted capacity5 TB
Form factor3.5-inch
Advanced Format (AF)Yes
Native command queuingYes
RoHS compliantYes


Data transfer rate (max)

Interface speed6 Gb/s
Internal transfer rate170 MB/s
Cache (MB)64
Rotational speed (RPM)IntelliPower

Reliability/Data Integrity

Load/unload cycles600,000
Non-recoverable read errors per bits read<1 in 10 ^14
MTBF (hours)1,000,000
Limited warranty (years)3

Power Management

12VDC ±10% (A, peak)1.75
5VDC ±10% (A, peak)

Average power requirements (W):


Environmental Specifications

Temperature (°C):

Operating0 to 65
Non-operating-40 to 70

Shock (Gs):

Operating (2 ms, read/write)30
Operating (2 ms, read)65
Non-operating (2 ms)250

Acoustics (dBA):

Seek (average)28

Physical Dimensions

Height (in./mm)1.028/26.1
Length (in./mm)5.787/147
Width (in./mm, ± .01 in.)4/101.6
Weight (lb./kg, ± 10%)1.65/0.75

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