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Silver 3.5-inch bare SATA hard drive, rectangular metal casing with label and circuit board visible

Western Digital

Western Digital WD100EFAX 10TB 5400 RPM 256MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-QADC-311XQ MPN WD100EFAX

10 TB NAS hard drive spins at 5400 RPM with 256 MB cache and SATA 6.0 Gb/s

  • Total capacity10 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed5,400 RPM
  • Cache memory256 MB
  • 10TB capacity stores large media libraries and backups
  • 5400 RPM spindle balances throughput with quiet 24×7 operation
  • 256MB cache accelerates frequent read and write requests
  • NASware 3.0 firmware optimises compatibility with 1‑8 bay NAS systems
  • 180TB per year workload rating supports heavy multi‑user environments

10TB NAS hard drive for 1–8 bay systems

This Western Digital WD Red drive provides 10TB of storage for network-attached storage enclosures with up to eight bays. It operates at 5400 RPM with a 256MB cache over a SATA 6.0Gb/s interface. The bare drive is built for continuous 24×7 operation in small and home office NAS environments.

NASware 3.0 firmware optimises multi-bay

The bundled NASware 3.0 firmware extends official support to systems with six to eight bays, improving drive compatibility and reliability across the array. It enables a total raw capacity of 48TB when eight drives are installed. The firmware is tuned for RAID workloads and the 180TB per year workload rating.

5400 RPM spindle speed defines sustained throughput

The 5400 RPM rotation rate sets the drive's sequential transfer ceiling and acoustic profile, making it suitable for bulk storage rather than low-latency transactional workloads. Buyers who need higher random IOPS or faster single-stream throughput should consider drives with a faster spindle speed.

How it compares

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

Price $334.99
Pricier than about 85% of the 4,938 comparable items (median $107.99).
Total capacity 10 TB
Higher than about 85% of the 2,372 comparable items (median 2 TB).
Price per TB $33.50 per TB
Cheaper than about 78% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWD
Product lineRed
Model nameWD100EFAX
Total capacity10 TB
Recommended useFor NAS systems
Performance
Rotational speed5,400 RPM
Storage
Cache memory256 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height1.03 in (2.62 cm)
Maximum width4 in (10.2 cm)
Maximum length5.79 in (14.7 cm)
Shipping weight0.77 kg
Package size221 × 155 × 76 mm

Questions about this item

Will the 256MB cache need any maintenance or replacement during the drive's life?

The 256MB cache is built into the drive and requires no separate maintenance or replacement.

What limit appears first under sustained use, the 180TB/yr workload rate or the 8-bay NASware 3.0 support?

The 180TB/yr workload rate is the sustained-use limit; NASware 3.0 supports up to 8 bays for compatibility.

How much noise, heat or power does the 5400 RPM drive produce when running all day in a NAS?

The 5400 RPM speed keeps noise, heat and power lower than faster drives, suited for 24x7 NAS operation.

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