Western Digital

Western Digital 12TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD120EFAX

Name: Western Digital 12TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD120EFAX
Brand: Western Digital
SKU: B07RQ99XJH
Price: 599.99 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-06

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$599.99

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View Current Price on Amazon → Compare to similar nas & home servers

*Price sourced from Amazon.com. Last updated 2026-08-17. Price and availability subject to change.

Bottom line: The Western Digital 12TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD120EFAX is a niche pick — read recent reviews before buying in the nas & home servers category, priced around $599.99. Compare close alternatives before committing.

Western Digital's 12TB WD Red Plus (WD120EFAX) is a 5400 RPM class NAS drive built for 24x7 small and medium business arrays, and it earns a 4.5 out of 5 rating from more than 24,350 reviewers. The headline detail is CMR: this model uses conventional magnetic recording rather than the SMR technology found in the standard WD Red line, which is why rebuilding a ZFS pool or a RAID array on it behaves predictably instead of stalling on sustained writes. Western Digital rates the drive for workloads up to 180 TB per year and validates it for bays 1 through 8, so it slots cleanly into a Synology…

SpecPicks Verdict

SpecPicks scored Western Digital 12TB WD Red Plus NAS Internal Hard Drive HDD - 5400… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the nas & home servers category. Western Digital's nas & home servers lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

Common buyer scenarios for nas & home servers of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Available in capacities ranging from 1-14TB with support for up to 8 bays
✓ Backed by Western Digital's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

Available in capacities ranging from 1-14TB with support for up to 8 bays
5400RPM performance class
Supports up to 180 TB/yr workload rate*| * Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred ✕ (8760 / recorded power-on hours))
NASware firmware for compatibility
Small or medium business NAS systems in a 24x7 environment
3-year limited warranty

Full Specifications

Brand	Western Digital
Color	Red
Model Name	WD Red
Unit Count	1 Count
Form Factor	3.5-inch
Model Number	WD120EFAX
Built-In Media	HDD
Item Type Name	Hard Disk Drive
Hard-Drive Size	12 TB
Mfr Part Number	WD120EFAX
Number of Items	1
Special Feature	Portable
Hardware Platform	Mac, PC
Installation Type	Internal Hard Drive
Compatible Devices	Desktop
Data Transfer Rate	196 megabits_per_second
Enclosure Material	Aluminum
Additional Features	Portable
Hard Disk Interface	Serial ATA
Warranty Description	3-year limited manufacturer

Ready to buy?

Western Digital 12TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD120EFAX is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-08-17. Price and availability subject to change.