Western Digital

Western Digital 4TB WD Gold Enterprise Class Internal Hard Drive (WD4003FRYZ)

Name: Western Digital 4TB WD Gold Enterprise Class Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD4003FRYZ
Brand: Western Digital
SKU: B07XDD6GD3

Status: Western Digital 4TB WD Gold Enterprise Class…: Unavailable on Amazon as of 2026-10-22 04:19 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The Western Digital 4TB WD Gold Enterprise Class Internal Hard Drive: Rated for 550TB/year workload, far above desktop-drive duty cycles; main trade-off: helioSeal low-power sealing only applies to 12TB and larger models.

Unavailable on Amazon as of 2026-10-22 04:19 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Similar: Seagate IronWolf Pro — $283.37 on Amazon as of 2026-10-21 22:19 UTC (price may vary).

View Current Price — $283.37

Similar: Western Digital 10TB WD Red Plus NAS Internal… — $459.99 on Amazon as of 2026-10-21 10:14 UTC (price may vary).

View Current Price — $459.99

Similar: Western Digital 12TB WD Red Plus NAS Internal… — $697.11 on Amazon as of 2026-10-21 22:16 UTC (price may vary).

View Current Price — $697.11

Original listing (currently unavailable) → Compare to similar nas & home servers

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-22

Mike Perry — Hardware researcher since 2014. For NAS and home-server hardware, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Rated for 550TB/year workload, far above desktop-drive duty cycles
✓ Up to 2.5M hours MTBF enterprise reliability spec
✓ 256 MB cache smooths sustained and multi-user transfers
✓ Vibration protection technology suits multi-bay NAS chassis

Cons

✗ HelioSeal low-power sealing only applies to 12TB and larger models
✗ EAMR and triple-stage actuator reserved for 16TB and up
✗ 7200 RPM class runs louder and hotter than 5400 RPM NAS drives
✗ 4TB is small for the price tier versus consumer NAS alternatives

Manufacturer description

The Western Digital WD Gold 4TB (WD4003FRYZ) is an enterprise-class 3.5-inch SATA hard drive built for NAS boxes, servers, and always-on storage arrays rather than desktop duty. It spins at 7200 RPM class speeds over a SATA 6 Gb/s interface and pairs that with a 256 MB cache, so sustained sequential transfers and multi-user random access hold up under load instead of collapsing when several clients hit the array at once. Western Digital rates the WD Gold line for workloads up to 550TB per year and up to 2.5M hours MTBF, which is the specification that separates it from consumer desktop…

SpecPicks Verdict

SpecPicks scored Western Digital 4TB WD Gold Enterprise Class Internal Hard Drive using a rating × review-volume × price-fit model applied to published specs and reviews 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. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Is the WD Gold 4TB good for a NAS?

Yes. It is an enterprise-class drive rated for workloads up to 550TB per year with vibration protection technology, which is specifically aimed at multi-bay NAS and server chassis rather than single-drive desktops.

What is the difference between WD Gold and WD Red?

WD Gold is the enterprise tier, rated up to 2.5M hours MTBF and 550TB/year workload for data centers and storage systems. It is a step above the consumer and SMB NAS lines in duty-cycle rating.

How fast is the WD4003FRYZ?

It is a 7200 RPM class drive on a SATA 6 Gb/s interface with a 256 MB cache. Actual throughput depends on your controller and workload; check the product listing for the rated sustained transfer figures.

Does this drive use HelioSeal helium technology?

No. Western Digital applies HelioSeal to WD Gold models of 12TB and above. The same applies to EAMR and the triple-stage actuator, which appear on 16TB and larger capacities.

How much usable space does the 4TB model actually give you?

Slightly less than 4TB. Western Digital counts 1TB as one trillion bytes, so the capacity your operating system reports will be lower, and actual user capacity varies by operating environment.

Key Features

Available in 1TB to 20TB capacities. | 1As used for storage capacity, 1GB = 1 billion bytes and 1TB = one trillion bytes. Actual user capacity may be less depending on operating environment.Specific uses: Business
Designed to handle workloads up to 550TB2 per year | 2Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred X (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations.
Vibration protection technology for improved performance
HelioSeal technology delivers high capacities with a low power draw (12TB and above)
Energy-assisted magnetic recording (EAMR) and triple-stage actuator (TSA) (in 16TB capacities and above)

Full Specifications

Brand	Western Digital
Color	Gold
Model Name	Gold
Read Speed	6 Gigabytes Per Second
Unit Count	1.0 Count
Form Factor	3.5-inch
Media Speed	6 Gigabytes Per Second
Model Number	WD4003FRYZ-SPF0DB0
Item Type Name	Hard Drive
Hard-Drive Size	4 TB
Mfr Part Number	WD4003FRYZ
Number of Items	1
Special Feature	Portable
Vibration/Rumble	Yes
Installation Type	Internal Hard Drive
Compatible Devices	Server, Storage System
Data Transfer Rate	255 Megabits Per Second
Enclosure Material	Information Not Available
Additional Features	Portable
Hard Disk Interface	Serial ATA
Full listing title	Western Digital 4TB WD Gold Enterprise Class Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD4003FRYZ

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View Similar — $283.37