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Seagate BarraCuda vs WD Blue 4TB
Get the WD Blue. It's confirmed CMR.
Compared on 10 specs from the makers' datasheets, and a group only gets a winner when the gap between the two is clear-cut.
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Side by side
SpecSeagate BarraCudaWD Blue
Reliability Backblaze doesn't run either
Backblaze failure rateLifetime, 95% interval in brackets No data No data
Warranty and workload Level
Warranty 2 years 2 years
Workload ratingReads and writes a year 55 TB/yr Not stated
Where it fits WD Blue wins
Line Desktop Desktop
Rated NAS bays Not stated Not stated
Recording SMR CMR (better)
Noise and speed Level
Spindle speedFaster reads quicker, slower is quieter 5,400 rpm 5,400 rpm
Noise on the datasheetIdle / seeking, the maker's figure 26 / 27 dB Not published
Power Only Seagate publishes it
Power at idleMaker's average 2.5 W Not published
Power in useMaker's average 3.7 W Not published
The Backblaze figures are lifetime annualised failure rates (Source: Backblaze), and we only call reliability when the two 95% intervals don't overlap.