Western Digital · NAS
WD101EFBX
WD Red Plus 10TB
SATA 6 Gb/s · 3.5-inch · CMR
Exact Amazon US product
$520.49
View on Amazon US ↗New listing · ASIN B08TZPS4QQ
Price as of Sep 12, 2026 04:48 UTC
The Western Digital WD101EFBX is a 10TB WD Red Plus hard drive for NAS storage, using SATA 6 Gb/s in a 3.5-inch form factor.
Manufacturer specifications
| Model number | WD101EFBX |
|---|---|
| Nominal capacity | 10 TB · 10000 GB |
| RPM | 7200 |
| NAS bays | Up to 8 |
| Interface | SATA 6 Gb/s |
| Recording | CMR |
| Cache (MB) | 256 |
| Form factor | 3.5-inch |
| Workload rating (TB/year) | 180 |
| Manufacturer limited warranty | 3 years (eligible new drives) |
Source: WD Red Plus datasheet, September 2025, pages 2. Reviewed 2026-09-07. Published specifications, not our benchmark results.
What the specifications mean
- CMR recording is specified for this exact model. Check enclosure support and workload limits before installing it in an array.
- 180 TB/year workload rating. This is a workload limit, not a promise of drive lifespan or a backup guarantee.
Before ordering
Match WD101EFBX, 10TB and SATA 6 Gb/s against the selected offer. Check your system’s exact-model compatibility list and the seller’s warranty and return terms.
Amazon US listings
Exact model matches on Amazon.com. A verified ASIN identifies the product; it does not guarantee current stock. Check the selected variant, condition and seller.
Amazon US · ASIN B08TZPS4QQ
$520.49 · as of Sep 12, 2026 04:48 UTC
Amazon US · ASIN B077RRQPRS
$649.75 · as of Sep 12, 2026 10:54 UTC
Amazon US · ASIN B08TZPS4QQ
$419.99 · as of Sep 12, 2026 04:48 UTC
Same-capacity alternatives with Amazon US links
These models share the drive type, interface class and capacity. Compare their specifications and your system requirements before choosing a replacement.
Seagate · IronWolf
ST10000VN0008
10TB · SATA 6 Gb/s · CMR
Compare with WD101EFBX →View on Amazon US ↗ASIN B07J35YWQY · Check price and conditionSeagate · IronWolf Pro
ST10000NT001
10TB · SATA 6 Gb/s · CMR
Compare with WD101EFBX →View on Amazon US ↗ASIN B0B94NQCV5 · Check price and conditionSeagate · IronWolf
ST10000VN0004
10TB · SATA 6 Gb/s
Compare with WD101EFBX →View on Amazon US ↗ASIN B01I1HI65E · Check price and conditionWD101EFBX questions answered
Is WD101EFBX CMR or SMR?
The manufacturer lists CMR recording for WD101EFBX. Other models and capacities in the same family can differ.
What connection does WD101EFBX need?
WD101EFBX uses SATA 6 Gb/s and a 3.5-inch form factor. Match both with the computer, controller or enclosure. An M.2 slot, 2.5-inch bay and 3.5-inch bay are not interchangeable.
How much usable space does WD101EFBX provide?
Its nominal capacity is 10000 GB, approximately 9313.2 GiB before formatting. The filesystem, reserved space and any RAID redundancy reduce usable capacity further.
What warranty is listed for WD101EFBX?
Manufacturer specification: 3 years (eligible new drives). A renewed, used, OEM or imported offer can have different coverage. Check the serial number and seller terms before buying.