Verdict

These are closely matched NAS drives of the same capacity - decide on price and warranty. Check the live $/TB above.

WD101EFBX
WD Red Plus · 10TB · NAS
€645 (€64.52/TB)
WD102KFBX
WD Red Pro · 10TB · NAS-Pro
€579 (€57.90/TB)

Value at a glance

Price / TB
WD101EFBX $40.81
WD102KFBX $51.04
Capacity
WD101EFBX 10 TB
WD102KFBX 10 TB
Noise (idle)
WD101EFBX 24 dB
WD102KFBX 20 dB

Price history · FR, cheapest per day

WD101EFBX €645 WD102KFBX €579
zoomed · drag to zoom
€645 €458 €271 Nov 2024 Mar 2025 Jul 2025 Nov 2025 Mar 2026 Jul 2026
WD101EFBX WD102KFBX
Capacity 10 TB 10 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class NAS NAS-Pro
Spindle speed 7200 RPM 7200 RPM
Cache 256 MB 256 MB
Noise (idle) 24 dB 20 dB
Fill Helium Helium
Interface SATA SATA
Failure rate (AFR) - -
Price / TB $40.81 $51.04
Buy
€645
View at Amazon →
€579
View at Amazon →

Highlighted cells mark the stronger spec for a NAS build. Failure rates from Backblaze Drive Stats where available; $/TB uses the cheapest live price. Buy links are Amazon affiliate.

WD101EFBX

No Backblaze failure data for this model.

3yr warranty · 180 TB/yr rated · 1,000,000h MTBF

WD102KFBX

No Backblaze failure data for this model.

5yr warranty · 300 TB/yr rated · 1,000,000h MTBF