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Silver 3.5-inch bare hard drive with green label

Western Digital

Western Digital WD20EARS 2TB 5400 RPM 64MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-28B8-HD314 MPN WD20EARS

A 2 TB desktop hard drive with 5400 RPM, 64 MB cache and SATA 3.0 Gb/s interface, erased to DoD 5220.22 M standard

  • Total capacity2 TB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed5,400 RPM
  • Cache memory64 MB
  • 2 TB capacity stores large media libraries
  • 5400 RPM spindle cuts power draw by up to 40 percent
  • 64 MB cache smooths burst transfers
  • DoD 5220.22 M compliant erase protects previous data
  • SATA 3.0 Gb/s interface fits standard desktop bays

Capacity and interface

This Western Digital WD Green drive provides 2TB of storage on a 3.5 inch form factor with a SATA 3.0Gb/s interface. It is suited for desktop users who need large, affordable capacity for archival or secondary data. The 64MB cache helps manage frequent read requests.

Upgrade considerations

It replaces older, smaller SATA drives when more space is needed without moving to a faster spindle speed. The jump is worth it if your workload tolerates 5400 RPM latency and you value lower power draw over peak throughput. Buyers who need sustained write performance or minimal bad-sector risk should look elsewhere.

Sustained operation

GreenPower technology keeps operating temperatures lower during long sessions, while IntelliSeek and IntelliPower reduce consumption by up to 40 percent compared to standard desktop drives. The drive was erased to DoD 5220.22 M compliance and tested good, though up to 25 bad sectors may be present. Acoustics stay ultra-quiet under continuous load.

How it compares

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

Price $108.99
Typical for this category: the median of 4,938 items is $107.99.
Total capacity 2 TB
Typical for this category: the median of 2,372 items is 2 TB.
Price per TB $54.50 per TB
Cheaper than about 57% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWestern Digital
Product lineWD Green
Model nameWD20EARS
Total capacity2 TB
Performance
Rotational speed5,400 RPM
Storage
Cache memory64 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight1.36 kg
Package size152 × 102 × 25 mm

Questions about this item

Does the 3.5" WD20EARS fit a standard desktop drive bay and SATA backplane?

Yes, the 3.5" form factor matches standard desktop bays and the SATA 3.0Gb/s interface connects to any SATA power and data cable.

What is the correct jumper setting when installing this SATA drive in a legacy system?

SATA drives do not use master or slave jumpers; leave the jumper block untouched and connect the drive directly to a SATA port.

How many bad sectors are acceptable before replacing this used 2TB drive?

The supplier notes up to 25 bad sectors may be present; monitor SMART reallocated-sector count and replace the drive if it grows beyond that level.

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