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
€650 (€65.05/TB)
WD102KFBX
WD Red Pro · 10TB · NAS-Pro
€666 (€66.63/TB)

Value at a glance

Price / TB
WD101EFBX $48.11
WD102KFBX $51.04
Capacity
WD101EFBX 10 TB
WD102KFBX 10 TB
Noise (idle)
WD101EFBX 24 dB
WD102KFBX 20 dB

Price history · ES, cheapest per day

WD101EFBX €650 WD102KFBX €666
zoomed · drag to zoom
€723 €498 €273 Nov 2024 Mar 2025 Jul 2025 Nov 2025 Apr 2026 Aug 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 $48.11 $51.04
Buy
€650
View at Amazon →
€666
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