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Western Digital 4TB WD Red SN700 NVMe Internal Solid State Drive SSD for NAS Devices - Gen3 PCIe, M.2 2280, Up to 3,400 MB/s - WDS400T1R0C
Western Digital

Western Digital 4TB WD Red SN700 NVMe Internal Solid State Drive SSD for NAS Devices

Bottom line: The Western Digital 4TB WD Red SN700 NVMe Internal Solid State Drive SSD: 4TB in a single M.2 2280 slot, no extra drive bays needed; main trade-off: gen3 PCIe only, so PCIe 4.0 NAS slots run it below their ceiling.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For SSDs and PC storage upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ 4TB in a single M.2 2280 slot, no extra drive bays needed
  • ✓ Up to 3,400 MB/s reads on the Gen3 PCIe interface
  • ✓ Purpose-built and tested against popular NAS system compatibility lists
  • ✓ Engineered for 24/7 always-on operation, not desktop duty cycles

Cons

  • ✗ Gen3 PCIe only, so PCIe 4.0 NAS slots run it below their ceiling
  • ✗ Needs an M.2 NVMe slot, which many budget NAS units lack
  • ✗ Overkill for single-user home media storage
  • ✗ Advertised 4TB is 4 trillion bytes, less after formatting

Manufacturer description

The Western Digital WD Red SN700 4TB NVMe SSD is built for NAS caching and always-on storage, not for the occasional desktop workload. This Gen3 PCIe drive in the M.2 2280 form factor reads at up to 3,400 MB/s, which means your SMB's shared volumes, virtual machines, and collaborative editing projects stop waiting on spinning disks. Western Digital purpose-built and tested the SN700 for compatibility with popular NAS systems, and engineered it for 24/7 operation with the reliability and endurance those environments demand. Where this drive earns its place is multi-user I/O. If several people…

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SpecPicks Verdict

SpecPicks scored Western Digital 4TB WD Red SN700 NVMe Internal Solid State Drive SSD using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Western Digital's ssds & storage 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 ssds & storage 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

Will the WD Red SN700 work in my NAS?

Western Digital purpose-built and tested the SN700 for compatibility with popular NAS systems, but your unit needs an available M.2 2280 NVMe slot. Check your NAS manufacturer's compatibility list before buying.

How fast is the 4TB WD Red SN700?

Western Digital rates it at up to 3,400 MB/s over the Gen3 PCIe interface. Real-world throughput in a NAS depends on your network link and how many users are hitting the array.

Is this drive rated for 24/7 operation?

Yes. Western Digital engineered the SN700 to support 24/7 environments and always-on applications, which is the core difference between the Red NAS line and a standard consumer NVMe SSD.

Can I use it for virtualization or database storage?

That is the stated use case. Western Digital positions the SN700 for virtualization, collaborative editing, and intensive database storage with caching in multi-user SMB environments.

Key Features

  • Robust system responsiveness and exceptional I/O performance
  • Tackle NAS workloads with exceptional reliability and endurance
  • Tame tough projects like virtualization and collaborative editing
  • Perfect for multitasking applications with multiple users
  • Scale your NAS device with huge capacities up to 4TB*
  • Purpose-built and tested to be compatible with popular NAS systems

Full Specifications

BrandWestern Digital
ColorRed
Model NameSN700
Read Speed3400 megabytes_per_second
Unit Count1 Count
Form FactorM.2 2280
Media Speed3100
Model NumberWDS400T1R0C
Built-In MediaSolid State Drive
Hard-Drive Size4 TB
Mfr Part NumberWDS400T1R0C
Number of Items1
Special FeatureSSD for NAS
Hardware PlatformPC
Installation TypeInternal Hard Drive
Compatible DevicesDesktop
Data Transfer Rate3400 megabytes_per_second
Enclosure MaterialAluminum, Steel
Additional FeaturesSSD for NAS
Hard Disk InterfaceNVMe
Full listing titleWestern Digital 4TB WD Red SN700 NVMe Internal Solid State Drive SSD for NAS Devices - Gen3 PCIe, M.2 2280, Up to 3,400 MB/s - WDS400T1R0C

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Western Digital 4TB WD Red SN700 NVMe Internal Solid State Drive SSD for NAS Devices - Gen3 PCIe, M.2 2280, Up to 3,400 MB/s - WDS400T1R0C is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Western Digital 4TB WD Red SN700 NVMe Internal Solid State Drive SSD for NAS Devices - Gen3 PCIe, M.2 2280, Up to 3,400 MB/s - WDS400T1R0C
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