WD 7

WD 4TB 64MB 3.5″ SATA 6GB/S 7200 RPM ENT

Part No: WD4000F9YZ

WD’s Se hard drives provide an ideal solution for scale-out datacenters, delivering a cost-effective combination of performance, reliability, and workload capability while maintaining the hardiness of a true enterprise-class design. All WD datacenter storage devices are designed from the ground up to deliver optimal performance and maximum data integrity while running 24x7x365 in demanding multi-slot environments.

    WD puts our datacenter products through extensive Functional Integrity Testing (F.I.T) prior to any product launch. This testing ensures our products consistently meet the high quality and reliability standards of the WD brand. Following a FIT test the Enterprise System Group (ESG) testing validates interoperability with HBAs, operating systems and drivers to ensure an even greater level of quality, reliability and peace of mind.

    Product Specifications

    Interface: SATA 6 Gb/s

    Formatted capacity: 4 TB

    User sectors per drive: 7,814,037,168

    Form factor: 3.5-inch

    Advanced Format: Yes

    Native command queuing: Yes

    RoHS compliant: Yes

    Performance Specifications

    Data transfer rate (max):

    Buffer to Host: 6 Gb/s

    Host to/from drive (sustained): 171 MB/s

    Cache (MB): 64

    Rotational speed (RPM): 7200

    Reliability/Data Integrity

    Load/unload cycles: 300,000

    Non-recoverable read errors per bits read: <10 in 1015

    MTBF (hours): 1,000,000

    MTBF (hours) for 1-5 bay NAS: 1,200,000

    Limited warranty (years): 5

    Power Management

    Average power requirements (W)

    Sequential read: 9.5

    Sequential write: 9.5

    Random read/write: 9.5

    Idle: 8.1

    Environmental Specifications

    Temperature (°C on the base casting):

    Operating: 5 to 55

    Non-operating: -40 to 70

    Shock (Gs): 1

    Operating (2 ms, read/write): 30

    Operating (2 ms, read): 65

    Non-operating (2 ms): 300

    Idle: 31

    Seek (average): 34

    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%): 1.66/0.75