Verdict

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

WD6004FRYZ
WD Gold · 6TB · Enterprise
€400 (€66.65/TB)
WD6005FFBX
WD Red Pro · 6TB · NAS-Pro
€337 (€56.19/TB)

Value at a glance

Price / TB
WD6004FRYZ $55.98
WD6005FFBX $50.74
Capacity
WD6004FRYZ 6 TB
WD6005FFBX 6 TB
Noise (idle)
WD6004FRYZ 20 dB
WD6005FFBX 20 dB

Price history · DE, cheapest per day

WD6004FRYZ €400 WD6005FFBX €337
zoomed · drag to zoom
€478 €330 €183 Jul 2024 Dec 2024 May 2025 Oct 2025 Feb 2026 Jul 2026
WD6004FRYZ WD6005FFBX
Capacity 6 TB 6 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class Enterprise NAS-Pro
Spindle speed 7200 RPM 7200 RPM
Cache 256 MB 256 MB
Noise (idle) 20 dB 20 dB
Fill Air Air
Interface SATA SATA
Failure rate (AFR) - -
Price / TB $55.98 $50.74
Buy
€400
View at Amazon →
€337
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.

WD6004FRYZ

No Backblaze failure data for this model.

5yr warranty · 550 TB/yr rated · 2,500,000h MTBF

WD6005FFBX

No Backblaze failure data for this model.

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