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Silver 3.5 inch bare hard drive with circuit board visible

Western Digital

Western Digital WD4000F9YZ 4TB 7200 RPM 64MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-V0VX-3ZRG8 MPN WD4000F9YZ

4 TB, 7200 RPM desktop drive with 64 MB cache and SATA 6.0 Gb/s interface, built for 24×365 NAS operation

  • Total capacity4 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory64 MB

Capacity 4TB

  • 4 TB capacity stores large datasets
  • 7200 RPM spindle speed delivers fast data access
  • 64 MB cache buffers frequent read and write operations
  • SATA 6.0 Gb/s interface provides high throughput
  • Designed for 24x7x365 operation in NAS environments

4TB SATA drive for NAS arrays

This Western Digital WD4000F9YZ is a 3.5-inch internal hard drive built for 24x7x365 operation in NAS and scale-out environments. It delivers 4TB of capacity at 7200 RPM with a 64MB cache over a SATA 6.0Gb/s interface. The Se series targets cost-effective enterprise-class storage where continuous uptime matters.

Verify SATA power and bay clearance

Confirm your enclosure or server has a free 3.5-inch bay that accommodates the 26.10mm height, 101.60mm width and 147.00mm length. The host must provide a SATA 6.0Gb/s data port and a standard SATA power connector. No mounting hardware or cables are included with the bare drive.

Bare drive means no extras in the box

The unit ships without screws, brackets, cables or software utilities. You supply all mounting hardware and any RAID or management tools your NAS platform requires. This keeps the purchase focused on the drive itself for integrators who already have the necessary accessories.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $271.99
Pricier than about 80% of the 4,938 comparable items (median $107.99).
Total capacity 4 TB
Higher than about 70% of the 2,372 comparable items (median 2 TB).
Price per TB $68.00 per TB
Typical for this category: the median of 2,365 items is $62.21 per TB.

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Specifications

Product
Brand nameWD
Product lineSe
Model nameWD4000F9YZ
Total capacity4 TB
Recommended useFor NAS systems
Performance
Rotational speed7,200 RPM
Storage
Cache memory64 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.6 mm
Maximum length147 mm
Shipping weight1.14 kg
Package size146 × 102 × 25 mm

Other versions of this model

1 more in the same range

Questions about this item

Does the WD4000F9YZ ship with cables or mounting screws?

Packaging is listed as bare drive, so no SATA data cable, power cable or mounting screws are included.

Is the 4 TB 7200 RPM Se model the right choice for a NAS array?

The Se series is built for 24x7x365 operation in NAS and scale-out architectures, offering 4 TB at 7200 RPM with 64 MB cache.

What sustained throughput can I expect from the 6.0 Gb/s SATA link in a real system?

The 6.0 Gb/s interface caps burst speed; sustained transfer will be limited by the 7200 RPM platters and 64 MB cache, typically well below the link maximum.

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