Verdict

All are CMR NAS drives. The WUH721816ALE6Lx has the lowest measured failure rate (0.88% AFR), making it the safer long-term choice.

MG08ACA16Tx
Toshiba MG08 · 16TB · Enterprise
$608 ($38.03/TB)
WUH721816ALE6Lx
WD Ultrastar DC HC550 · 16TB · Enterprise
$694 ($43.40/TB)

Value at a glance

Price / TB
MG08ACA16Tx $29.69
WUH721816ALE6Lx $37.70
Failure rate (AFR)
MG08ACA16Tx 1.43%
WUH721816ALE6Lx 0.88%
Capacity
MG08ACA16Tx 16 TB
WUH721816ALE6Lx 16 TB
Noise (idle)
MG08ACA16Tx 20 dB
WUH721816ALE6Lx 20 dB

Price history · US, cheapest per day

MG08ACA16Tx $608 WUH721816ALE6Lx $694
zoomed · drag to zoom
$694 $462 $230 Jul 2024 Dec 2024 May 2025 Sep 2025 Feb 2026 Jul 2026
MG08ACA16Tx WUH721816ALE6Lx
Capacity 16 TB 16 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class Enterprise Enterprise
Spindle speed 7200 RPM 7200 RPM
Cache 512 MB 512 MB
Noise (idle) 20 dB 20 dB
Fill Helium Helium
Interface SATA SATA
Failure rate (AFR) 1.43% 0.88%
Price / TB $29.69 $37.70
Buy
$608
View at Amazon →
$694
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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.

MG08ACA16Tx

1.43% AFR vs 1.34% fleet avg

95% CI 1.34-1.53%

51,185 drives · ~63,543 drive-years · 908 failures · Backblaze thru Q1 2026

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

WUH721816ALE6Lx

0.88% AFR vs 1.34% fleet avg

95% CI 0.78-0.98%

29,795 drives · ~36,808 drive-years · 323 failures · Backblaze thru Q1 2026

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