Western Digital 12TB WD Red Plus NAS Internal Hard Drive HDD
- 12 TB, 3.5 inch internal drive
- 7200 RPM, 512 MB cache, CMR
- SATA 6 Gb/s interface
- Built for up to 8-bay NAS systems
- 260 MB/s listed transfer rate
- 3-year limited warranty
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A large mechanical drive aimed at small business and home NAS use, rated for NAS enclosures of up to eight bays. It is a spinning disk with no noise or power figures in the listing.
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ASIN: B0F4R6SNJGModel: WD120EFGX-SPCPHN0Category: Internal Hard Drives
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Overview
A NAS owner filling out a storage array is the person this drive is made for. It is a mechanical disk that plugs into a standard SATA connection and is tested for RAID arrays, including rebuilds on ZFS and other file systems.
The reason to consider it is the NAS tuning and the spacious capacity for archiving and sharing files across a small network. The limit is that mechanical drives are slower than SSD storage, and the listing gives no noise, power draw or workload rating.
Who it's for
Think of a multi-bay NAS that needs another disk or a replacement during a RAID rebuild. Someone loading an operating system or games should buy an SSD instead, and laptop owners need a smaller drive.
Pros and cons
- Tuned for NAS and RAID use
- Large single-drive capacity
- Tested for multi-bay enclosures
- Standard SATA connection
- Mechanical, slower than an SSD
- Noise level not listed
- Power draw not listed
- Workload rating not listed
Performance notes
A spinning platter at the listed speed sets sequential throughput, and the cache smooths short bursts of requests. In a RAID array the real transfer rate also depends on the number of drives and the file system. Rebuild times grow with capacity because every sector has to be read.
Where it stands among internal hard drives
- #8 most-searched brand and model of the 18 internal hard drives lines we track (by search demand, not sales).
From the specs of the 15 internal hard drives we list; not a test result.
Specifications
| Brand | Western Digital |
|---|---|
| Model | WD120EFGX-SPCPHN0 |
| Dimensions & fit | |
| Cache | 512 MB |
| Weight | 1.8 pounds |
| Dimensions | 5.79 x 4 x 1.52 inches (L x W x thickness) |
| Capacity & performance | |
| Capacity | 12 TB |
| Rotational speed | 7200 rpm |
| Compatibility & installation | |
| Interface | Serial ATA-600 (SATA 6 Gb/s) |
| Compatible devices | Desktop, NAS |
| Warranty & support | |
| Warranty | 3-year limited warranty |
| Other details | |
| Form factor | 3.5 inches |
| Data transfer rate | 260 MB/s |
| Specific uses | NAS, business |
| Drive type | Mechanical hard disk |
Frequently asked questions
Is the WD Red Plus an external drive?
No. It is an internal bare drive and needs a NAS bay, a desktop bay or an enclosure to run.
How many bays can it be used in?
The description says it is built and tested for NAS systems of up to eight bays.
Is the WD Red Plus an SSD?
No. It is a mechanical hard disk with spinning platters.