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Western Digital SE WD4000F9YZ 4TB Hard Drive View larger

Western Digital SE WD4000F9YZ 4TB Hard Drive



Western Digital SE WD4000F9YZ 4TB Hard Drive

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Western Digital SE WD4000F9YZ 4TB Hard Drive

Product Specifications
Western Digital SE WD4000F9YZ 4Tb/4000gb, Sata6G , dual processors unit , Dual actuator , StableTrac technology , multi-axis shock sensor , with NCQ, TLER , RAFF , NoTouch ramp load technology , 7200rpm , 64mb , 171mb/sec , designed for 24x7 business-critical applications


Product Range Features (Actual Product Features May Differ)

The Se is best suited for bulk cloud storage, replicated environments, content delivery networks (CDNs), SMB network attached storage (NAS), backup and archiving. 

Product Range Specifications (Actual Product Specifications May Differ)

InterfaceSATA 6 Gb/s

Performance Specifications
Rotational Speed7,200 RPM (nominal)
Buffer Size64 MB
Load/unload Cycles600,000 minimum
Transfer Rates
Buffer To Host (Serial ATA)6 Gb/s (Max)

Physical Specifications
Capacity4 TB
User Sectors Per Drive7,814,037,168

Performance Specifications
Target Performance
MTBF800,000 hours
MTBF for 1-5 Bay NAS1,200,000 hours

Physical Dimensions
Height1.028 Inches
Depth5.787 Inches
Width4.00 Inches
Weight1.66 Pounds
Height26.1 mm
Depth147 mm
Width101.6 mm
Weight0.75 kg

Power Management
Read (Peak Watts)9.50 Watts
Write (Peak Watts)9.10 Watts

Environmental Specifications
Operating Shock (Read)65G, 2 ms
Non-operating Shock300G, 2 ms
Idle Mode31 dBA (average)
Seek Mode 034 dBA (average)
Temperature (English)
Operating41° F to 131° F
Non-operating-40° F to 158° F
Temperature (Metric)
Operating5° C to 55° C
Non-operating-40° C to 70° C

Electrical Specifications
Current Requirements
Power Dissipation
Read/Write9.50 Watts
Idle8.10 Watts


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