10TB • NAS storage
WD Red Plus 10TB WD100EFGX NAS Hard Drive
Build shared storage for everyday files, media and backups with the WD Red Plus 10TB WD100EFGX. This 3.5-inch SATA drive combines CMR recording, 7200RPM operation and 512MB cache with WD's NASware firmware. It is designed for continuous use in compatible NAS systems with up to eight bays.
- Capacity
- 10TB
- Spindle speed
- 7200RPM
- Cache
- 512MB
- NAS positioning
- Up to 8 bays
Features
NAS-tuned firmware
NASware adapts drive behaviour to shared storage and RAID workloads.
10TB CMR storage
Provide space for shared documents, photo libraries and backup sets without choosing a drive-managed SMR model.
Continuous operation
Designed for always-on NAS use in home offices and small businesses.
7200RPM and 512MB cache
This exact model has a 512MB cache, not the 256MB cache of the older WD101EFBX.
Up to eight bays
Positioned for compatible RAID-optimised NAS systems with up to eight drive bays.
Workload planning
The 180TB/year rating covers annualised reads and writes; it is not an SSD lifetime-write allowance.
Technical specifications
| Manufacturer | Western Digital |
|---|---|
| Product family | WD Red Plus |
| Model | WD100EFGX |
| Capacity | 10TB |
| Form factor | 3.5-inch internal HDD |
| Interface | SATA 6Gb/s |
| Spindle speed | 7200RPM |
| Cache | 512MB |
| Recording technology | CMR |
| Internal transfer rate | Up to 260MB/s |
| NAS positioning | Up to 8 bays |
| NAS firmware | NASware |
| Annual workload rating | 180TB/year |
| MTBF | 1,000,000 hours |
| Duty | 24×7 |
| Load/unload cycles | 600,000 |
| Dimensions (L × W × H) | 147 × 101.6 × 26.1 mm |
| Nominal drive weight | 750 g (±10%; unpackaged) |
| Operating temperature | 0°C to 65°C |
| Manufacturer limited warranty | 3 years |
Warranty
Western Digital specifies a three-year limited manufacturer warranty for WD100EFGX. Coverage is subject to the manufacturer's regional terms and the supplied drive's eligibility. Contact NAS Marketplace with your order details for purchase-related warranty assistance.
Frequently asked questions
Is this the older WD101EFBX?
No. This listing is for WD100EFGX, with 512MB cache. Confirm the exact SKU when comparing drives.
Will it work in my NAS?
Check your enclosure vendor's exact-model compatibility list and supported firmware before ordering.
Does 10TB mean 10TB of usable RAID space?
No. Formatting, reserved space and the chosen RAID layout reduce available capacity.
One internal hard drive; NAS enclosure not included. Check exact-model compatibility before purchase. 1TB equals one trillion bytes. MTBF describes statistical reliability, not the lifetime of an individual drive. RAID is not a substitute for an independent backup.
The up-to-260MB/s specification is a drive transfer rate, not a guaranteed NAS network speed.
