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Silver 3.5 inch bare hard drive with circuit board visible

Western Digital

Western Digital WD RE4 WD2503ABYX 250GB 7200 RPM 64MB Cache SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-3N2E-110GS MPN WD2503ABYX

A 250 GB 3.5" SATA drive spinning at 7200 RPM with 64 MB cache, built for 24×7 RAID arrays

  • PackagingBare Drive
  • InterfaceSATA 3.0Gb/s
  • Capacity250GB
  • NAND Flash Memory TypeEnterprise
  • RPM7200 RPM
  • Cache64MB

Options 250GB

  • 250 GB capacity for server storage
  • 7200 RPM spindle speed for quick data access
  • 64 MB cache buffer for sustained throughput
  • 2 million hours MTBF at 100 % duty cycle
  • RAID-optimised TLER and NoTouch ramp load technology

Enterprise storage drive

The Western Digital WD RE4 WD2503ABYX is a 250GB 3.5-inch internal hard drive built for servers and high-availability deployments. It runs at 7200 RPM with a 64MB cache and a SATA 3.0Gb/s interface. The drive is rated for 1.2 million hours at 100% duty cycle and 24x7x365 operation.

Bare drive with RAID features

Supplied as a bare drive without tray or mounting hardware, it fits standard 3.5-inch bays and connects via a single SATA data and power cable. Firmware includes time-limited error recovery (TLER) and NoTouch ramp load technology to protect the heads during continuous operation. These features suit RAID arrays and heavy application workloads.

Continuous duty thermals

Designed for non-stop use, the drive maintains stable temperatures in ventilated server chassis under constant load. Mechanical noise is typical for a 7200 RPM enterprise spindle and remains consistent over long periods. Power draw scales with the SATA 3.0Gb/s interface during sustained read and write activity.

Privalumai

  • 250 GB capacity for server storage
  • 7200 RPM spindle speed for quick data access
  • 64 MB cache buffer for sustained throughput
  • 2 million hours MTBF at 100 % duty cycle
  • RAID-optimised TLER and NoTouch ramp load technology

Specifikacijos

BrandWestern Digital
SeriesWD RE4
ModelWD2503ABYX
PackagingBare Drive
InterfaceSATA 3.0Gb/s
Capacity250GB
NAND Flash Memory TypeEnterprise
RPM7200 RPM
Cache64MB
Average Latency3Gb/s
FeaturesRAID-specific, time-limited error recovery (TLER)
1.2 million hours at 100% duty cycle
NoTouch ramp load technology
24x7 reliability
UsageIdeal for Servers
Form Factor3.5"
Siuntos svoris0.59 kg
Pakuotės dydis147 × 102 × 23 mm

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What real-world throughput does the SATA 3.0 Gb/s interface limit this drive to?

The SATA 3.0 Gb/s link caps sustained transfer at the interface maximum, so the 7200 RPM platters and 64MB cache cannot push data faster than the bus allows.

What physical space and mounting does the 3.5-inch form factor require?

The drive needs a standard 3.5-inch bay with SATA data and power connectors; it fits any desktop chassis or server tray designed for that form factor.

How is the drive installed, and which step is often missed?

Secure the drive with four screws, attach the SATA data cable to the motherboard and the power cable from the PSU, then enable the port in BIOS so the OS can detect it.

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