Model Mumber WD4003FFBX Interface SATA 6Gb/s Formatted 4TB Form factor 3.5 inch Advanced Format Yes

	Native command queuing yes RoHS compliant Yes Performance Interface transfer rate (max) Buffer to host 6Gb/s Host to/from drive (sustained) 217MB/s

	Cache(MB) 256 Performance Class 7200RPM Class Reliability/Data Integrity Load/unload Cycles 600000 Non-recoverable read errors per bits read <10 in 1015

	MTBF(hours) for 8-24 bay NAS 1000000 Workload Rate(TB/yr) 300 Power Management 12VDC-/+10%(A, peak) 1.79 Average power requirements(W)

	Read/Write 7.2 Idle 3.7 Standby/Sleep 0.4

	Environmental Sepcifications Temperature(oc) Operating 5 to 60 Non-operating -40 to 70 Shock(Gs) Operating(2 ms,read/write) 30

	Operating(2 ms,read) 65 Non-operating (2 ms) 300 Acoustics (dBA)9 Idle 29 Seek (average) 36

	Item Dimension 6 x 4 x 2

	Weight 1.58 LB

	Warranty Information 5 Years