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Silver 3.5-inch SATA hard drive with circuit board visible

Western Digital

Western Digital WD Red Plus 8TB internal hard drive WD80EFZX

SKU CH-Z3WA-NHSZJ

An 8TB 3.5" SATA CMR drive with 128MB cache and 5640 RPM, built for 24x7 NAS workloads up to 180TB/yr

  • Total capacity8 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Recording methodCMR
  • Rotational speed5,640 RPM
  • Cache memory128 MB
  • CMR recording technology keeps data writes consistent and reliable
  • 128 MB cache accelerates read and write performance in multi-bay NAS
  • 5640 RPM spindle speed balances throughput with low vibration
  • 3D Active Balance Plus reduces vibration for longer drive life in 24x7 operation
  • NASware firmware ensures compatibility with up to 8-bay enclosures

8 TB NAS drive with CMR recording

The WD Red Plus WD80EFZX is an 8 TB desktop internal hard drive built for network-attached storage systems. Its conventional magnetic recording technology and 5640 RPM spindle suit multi-bay NAS enclosures that run continuously. Small-business and home-office users who need dependable bulk storage for backups, media libraries or archiving will find the capacity and firmware tuning appropriate.

Fits 3.5-inch bays with SATA 6.0Gb/s

The drive measures 147.00 mm long, 101.60 mm wide and 26.10 mm high, matching standard 3.5-inch drive trays. A single SATA 6.0Gb/s cable provides both data and power connections, leaving PCIe slots free for other expansion cards. NASware firmware handles error-recovery timing and power-management defaults so the host NAS does not need manual tuning for each disk.

180 TB per year workload rating under 24x7 load

Rated for up to 180 TB of data transferred per year, the drive is engineered for sustained write and read cycles rather than burst workloads. 3D Active Balance Plus dual-plane balancing reduces vibration in multi-drive chassis, helping maintain consistent throughput during long RAID rebuilds or continuous streaming. An MTBF of up to 1 million hours reflects the design target for always-on operation.

How it compares

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

Price $369.99
Pricier than about 88% of the 4,938 comparable items (median $107.99).
Total capacity 8 TB
Higher than about 80% of the 2,372 comparable items (median 2 TB).
Price per TB $46.25 per TB
Cheaper than about 64% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWD
Product lineRed Plus
Model nameWD80EFZX
Total capacity8 TB
Recommended useFor NAS systems
Performance
Rotational speed5,640 RPM
Storage
Recording methodCMR
Cache memory128 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.6 mm
Maximum length147 mm

Questions about this item

Will the 5640 RPM speed become the bottleneck during long write sessions?

The 5640 RPM class and SATA 6.0Gb/s interface set the sustained throughput ceiling, while the 128MB cache absorbs bursts before the platters limit continuous transfer rates.

How much noise and heat does the 8TB drive add to a 24x7 NAS?

3D Active Balance Plus minimises vibration-induced noise in multi-bay enclosures, and the drive is rated for 24x7 operation with up to 1 million hours MTBF.

What must my NAS already have to install this 3.5 inch SATA drive?

A free 3.5 inch bay that accepts drives up to 26.10mm high, a SATA data cable and a SATA power connector from the NAS power supply.

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