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Silver 3.5-inch SATA hard drive with circuit board visible

Western Digital

Western Digital WD1003FBYX-01Y7B1 1TB 7200 RPM 64MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-X3S8-N7Q9V MPN WD1003FBYX-01Y7B1

1 TB desktop hard drive with 7200 RPM speed, 64 MB cache and SATA 3.0 Gb/s interface for write-intensive workloads

  • Total capacity1 TB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Rotational speed7,200 RPM
  • Cache memory64 MB
  • 1TB capacity for large data storage
  • 7200 RPM spindle speed for fast access
  • 64MB cache buffer for smooth performance
  • SATA 3.0Gb/s interface for broad compatibility
  • 5-inch form factor fits standard drive bays

Enterprise SATA drive for write-heavy workloads

The WD RE4 WD1003FBYX is a 1TB 3.5-inch internal hard drive built for servers, video surveillance and other demanding write-intensive applications. It spins at 7200 RPM with 64MB cache and uses the SATA 3.0Gb/s interface.

SATA 3.0Gb/s caps sustained throughput

The interface tops out at 3.0Gb/s, so sequential read and write speeds cannot exceed that ceiling regardless of the drive’s 7200 RPM spindle speed. Random I/O performance is also bounded by the same link and the 64MB cache buffer.

Enterprise build with vibration tolerance

Fourth-generation vibration tolerance helps maintain consistent operation in multi-drive chassis where adjacent spindles create rotational disturbance. Standard 3.5-inch mounting and SATA connectors allow direct installation in server backplanes or desktop bays without adapters.

How it compares

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

Price $147.99
Pricier than about 60% of the 4,938 comparable items (median $107.99).
Total capacity 1 TB
Lower than about 60% of the 2,372 comparable items (median 2 TB).
Price per TB $147.99 per TB
Pricier than about 72% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWD
Product lineRE4
Model nameWD1003FBYX
Total capacity1 TB
Performance
Rotational speed7,200 RPM
Storage
Cache memory64 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.66 kg
Package size140 × 107 × 28 mm

Questions about this item

Which WD RE4 model should I pick for a write-intensive server?

The WD1003FBYX delivers 1TB at 7200 RPM with 64MB cache, built for servers, video surveillance and other demanding write workloads.

What real-world speed does the 7200 RPM and SATA 3.0Gb/s combination give?

The 7200 RPM spindle and 64MB cache set sustained throughput, while the SATA 3.0Gb/s link caps the peak interface rate.

What does the SATA 3.0Gb/s interface mean for my system?

It connects to any standard SATA port on a desktop or server motherboard and limits the maximum interface transfer rate to 3.0Gb/s.

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