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Silver 3.5 inch internal hard drive with green label

Western Digital

Western Digital WD30EFZX 3TB 5400 RPM 128MB CMR SATA 3.5" internal hard drive

SKU CH-2BR5-CTQCF MPN WD30EFZX

A 3.5 inch SATA drive with 3TB capacity, 5400 RPM, 128MB cache and CMR technology built for 24x7 NAS workloads up to 180 TB per year

  • Total capacity3 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Flash memory typeHard Drive
  • Recording methodCMR
  • Rotational speed5,400 RPM

Capacity 3TB

Show 4 more
  • Designed for NAS workloads up to 180 TB/yr
  • CMR recording technology for consistent RAID performance
  • 128 MB cache accelerates data access
  • SATA 6.0 Gb/s interface for broad compatibility
  • Built and tested for 24×7 operation in up to 8-bay enclosures

3TB CMR drive for NAS

The WD Red Plus WD30EFZX is a 3TB 3.5-inch hard drive built for small- to medium-business NAS enclosures. It uses conventional magnetic recording and a SATA 6.0Gb/s interface to deliver consistent throughput in multi-bay systems. The 128MB cache helps sustain performance during concurrent read and write operations. It is rated for 24x7 operation in up to eight-bay configurations.

Upgrade from smaller or archive-class drives

Replace lower-capacity drives or shingled-recording models when your array needs more raw space and predictable rebuild behaviour. The 180 TB/yr workload rating and CMR technology make the step worthwhile for RAID sets that see frequent parity rebuilds or ZFS resilvering. Drives limited to lighter duty cycles or fewer supported bays will not match this endurance profile.

Buyers needing more than eight bays

This model is not for deployments that exceed eight drive bays or require the higher workload rating of the Red Pro line. Systems that demand 24-bay support or sustained write intensity beyond 180 TB/yr should look elsewhere. Verify that your NAS firmware lists this drive as compatible before ordering.

How it compares

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

Price $82.99
Cheaper than about 58% of the 4,938 comparable items (median $107.99).
Total capacity 3 TB
Higher than about 60% of the 2,372 comparable items (median 2 TB).
Price per TB $27.66 per TB
Cheaper than about 86% of the 2,365 comparable items (median $62.21 per TB).

New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameWD
Product lineRed Plus
Model nameWD30EFZX
Total capacity3 TB
Recommended useFor NAS systems
Performance
Rotational speed5,400 RPM
Storage
Flash memory typeHard Drive
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
Shipping weight0.57 kg
Package size146 × 102 × 24 mm

Other versions of this model

5 more in the same range

Questions about this item

Will the 147.00mm length and 26.10mm height fit my 3.5-inch NAS bay?

Yes, the drive measures 147.00mm long, 101.60mm wide and 26.10mm high, matching the standard 3.5-inch form factor used in most NAS enclosures.

Does the SATA 6.0Gb/s interface require any jumper or driver setup during installation?

No jumper or driver is needed; connect the SATA data and power cables, and the NAS firmware will recognise the drive automatically.

What workload rating should I expect before planning a replacement?

The drive is rated for up to 180 TB per year, so plan a replacement once your annual written data approaches that figure.

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