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Silver 3.5 inch internal hard drive with SATA connectors and label showing WD Blue 12TB

Western Digital

Western Digital WD120EAGZ 12TB 7200 RPM 512MB Cache SATA 3.5" internal hard drive

SKU CH-34ZF-D6ZQP MPN WD120EAGZ

A 12 TB CMR desktop drive with 7200 RPM and 512 MB cache for reliable everyday storage

  • InterfaceSATA 6.0Gb/s
  • Capacity12TB
  • Recording TechnologyCMR
  • RPM7200 RPM
  • Cache512MB
  • FeaturesWD Blue® 3.5-inch PC HDD – WD Blue® internal hard drives del

Options 12TB 512MB Cache

  • 12 TB capacity for large media libraries
  • 7200 RPM speed for responsive everyday computing
  • 512 MB cache to smooth heavy workloads
  • CMR recording technology for consistent write performance
  • SATA 6.0 Gb/s interface for broad desktop compatibility

12 TB SATA desktop drive

The Western Digital WD120EAGZ is a 12 TB 3.5-inch internal hard drive that spins at 7200 RPM and carries a 512 MB cache. It connects through a SATA 6.0 Gb/s interface and uses CMR recording technology for consistent write performance.

Built for bulk storage on a desktop

This drive suits users who need large, affordable capacity for documents, media libraries or backups on a standard desktop PC. It is not intended for laptops, small-form-factor systems or any device that cannot accommodate a 3.5-inch bay with 26.10 mm height clearance.

Steady throughput under sustained writes

The 7200 RPM spindle and generous cache keep sequential transfer rates stable during long copy jobs or continuous recording workloads. Acoustic output and vibration remain at typical desktop levels even when the drive runs for extended periods.

Highlights

  • 12 TB capacity for large media libraries
  • 7200 RPM speed for responsive everyday computing
  • 512 MB cache to smooth heavy workloads
  • CMR recording technology for consistent write performance
  • SATA 6.0 Gb/s interface for broad desktop compatibility

Specifications

BrandWD
SeriesBlue
ModelWD120EAGZ
InterfaceSATA 6.0Gb/s
Capacity12TB
Recording TechnologyCMR
RPM7200 RPM
Cache512MB
FeaturesWD Blue® 3.5-inch PC HDD – WD Blue® internal hard drives deliver solid reliability for office and web applications, and they are perfect for extra storage for desktop PCs and in-office applications.
NoTouchTM Ramp Load Technology – The recording head never touches the disk media, ensuring significantly less wear to the recording head and media as well as better drive protection in transit.
Low Power Consumption – State-of-the-art seeking algorithms and advanced power management features ensure low power consumption.
"Upgrading Your Drive Is Easy – Seamlessly migrate your current syst
UsageFor Daily Computing
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.60mm
Length (maximum)147.00mm
Shipping weight0.73 kg
Package size152 × 102 × 25 mm

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Questions about this item

What type of SATA port and power connector does the WD120EAGZ require?

The drive connects to a standard SATA 6.0Gb/s port and uses a regular 15-pin SATA power connector from your power supply.

Will the 7200 RPM speed and 512MB cache of this 12TB drive work with an older motherboard limited to SATA 3.0Gb/s?

Yes, the SATA 6.0Gb/s interface is backwards compatible; the drive will run at the older bus speed while keeping its 7200 RPM spindle and 512MB cache.

How can I verify the WD120EAGZ is healthy and performing at 7200 RPM after installation?

Check SMART attributes for zero reallocated sectors and use a benchmark tool to confirm sustained transfer rates consistent with a 7200 RPM CMR drive.

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