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Silver rectangular 3.5-inch internal hard drive with exposed circuit board and SATA connectors

Western Digital

Western Digital WD2503ABYX 250GB 7200RPM 64MB SATA 3.5" internal hard drive

SKU CH-ZW9E-00X2W MPN WD2503ABYX

A 250 GB 3.5" SATA hard drive spinning at 7200 RPM with 64 MB cache for server workloads

  • PackagingBare Drive
  • InterfaceSATA 3.0Gb/s
  • Capacity250GB
  • NAND Flash Memory TypeSLC
  • RPM7200 RPM
  • Cache64MB
  • Enterprise-class 64MB cache boosts server responsiveness
  • 7200 RPM spindle speed delivers fast data access
  • 250GB capacity fits essential OS and application storage
  • SATA 3.0Gb/s interface ensures broad system compatibility
  • 5-inch form factor suits standard drive bays

WD RE4 250GB 7200RPM SATA drive

The Western Digital WD2503ABYX is a 250GB 3.5-inch internal hard drive spinning at 7200 RPM with a 64MB cache. It connects through a SATA 3.0Gb/s interface and belongs to the enterprise-focused RE4 series. This refurbished unit is supplied as a bare drive without retail packaging.

Suits servers needing 3Gb/s SATA storage.

The drive fits servers and workstations that require a 3.0Gb/s SATA connection and enterprise-grade reliability features such as dual processors and dual-stage actuation. It is not intended for systems that demand a 6Gb/s SATA interface or capacities beyond 250GB. Buyers needing larger volumes or faster interface speeds should consider other options.

SATA 3.0Gb/s interface decides compatibility

The single specification that determines whether this is the correct part is the SATA 3.0Gb/s interface. The drive will operate at its rated speed only when connected to a controller that supports the 300MB/s standard. If the host system provides only a 6Gb/s port without backward compatibility, the drive may not function as expected.

Highlights

  • Enterprise-class 64MB cache boosts server responsiveness
  • 7200 RPM spindle speed delivers fast data access
  • 250GB capacity fits essential OS and application storage
  • SATA 3.0Gb/s interface ensures broad system compatibility
  • 5-inch form factor suits standard drive bays

Specifications

BrandWestern Digital
SeriesWD RE4
ModelWD2503ABYX-01WERA1
PackagingBare Drive
InterfaceSATA 3.0Gb/s
Capacity250GB
NAND Flash Memory TypeSLC
RPM7200 RPM
Cache64MB
UsageIdeal for Servers
Form Factor3.5"
Shipping weight0.91 kg
Package size127 × 89 × 25 mm

Questions about this item

Does the bare drive include cables or mounting brackets, or must they be purchased separately?

The drive is supplied as a bare unit only; SATA data and power cables plus 3.5-inch mounting screws are not included and must be sourced separately.

The RE4 series lists 250 GB, 64 MB cache and 7200 RPM — which capacity or cache variant should I pick for a server array?

This specific model is the 250 GB variant with 64 MB cache and 7200 RPM; no other capacity or cache options exist for the WD2503ABYX part number.

The headline says SATA 3.0 Gb/s — what throughput should I expect once the drive is installed in a RAID controller?

The SATA 3.0 Gb/s interface caps the burst transfer at 300 MB/s; sustained rates will be lower and depend on the RAID controller and workload.

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