WD Red Plus 4TB NAS Hard Drive 3.5 Inch SATA 5400RPM | WD40EFPX
WD Red Plus 4TB NAS Hard Drive (WD40EFPX) is a 3.5-inch SATA HDD designed for NAS storage systems, home offices and small to medium businesses. Featuring 5400RPM rotational speed, 256MB cache, CMR recording technology and WD NASware technology, it provides reliable storage performance for continuous 24/7 NAS operation.
Technical Specifications
Specification
Details
Brand
Western Digital (WD)
Product Series
WD Red Plus
Capacity
4TB
Model Number
WD40EFPX
Product Type
NAS Internal Hard Drive
Form Factor
3.5-inch
Interface
SATA 6Gb/s
Rotational Speed
5400RPM
Cache
256MB
Recording Technology
CMR
Internal Transfer Rate
Up to 180MB/s
Technology
WD NASware
Workload Rating
180TB/year
MTBF
1 million hours
Load/Unload Cycles
600,000
Non-Recoverable Read Errors
Less than 1 in 10¹⁴ bits read
Operating Availability
24x7
Recommended NAS Bays
Up to 8 bays
Operating Temperature
0°C to 65°C
Non-Operating Temperature
-40°C to 70°C
Dimensions
147.07 × 101.6 × 26.16mm
Weight
570g
Warranty
3-Year
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