Seagate BarraCuda 6TB
The Seagate BarraCuda 6TB costs $308.00 right now, or $51.33/TB. The 8TB is cheaper per terabyte at $31.25/TB. Stepping up to the 8TB costs -$58.01 more. The maker rates it for about 151 GB read or written a day.
Prices update daily and may differ at the retailer. This page contains affiliate links.

Where to buy the Seagate BarraCuda 6TB
Every in-stock offer we track, cheapest first.
Price history
How the lowest price has moved since we started tracking it.
Not enough price history yet for the Seagate BarraCuda 6TB. We record prices daily, so a chart appears once there are a few days to show.
Specifications
Drive
- Capacity
- 6TB
- Form factor
- 3.5"
- Spindle speed
- 5,400 RPM
- Recording
- SMR
- Cache
- 256 MB
Shingled recording: sustained writes and RAID rebuilds can slow sharply. Avoid for NAS arrays.
Rated for
- Use class
- Desktop
- Workload
- 55 TB/year
- Warranty
- 2 years
That is about 151 GB read or written a day, far more than a desktop writes.
Noise and power
- Idle power
- 3.4 W
- Operating power
- 5.3 W
Identity
- Part number
- ST6000DM003
Quality score
How we score →Scored from recording type (CMR or SMR), workload rating, warranty, measured failure rate where Backblaze covers the model, spindle speed, MTBF and cache. Use class and size filter; they never score.
Value weighs the score against the price, compared with other 6TB hard drives: this drive costs $51.33/TB against a typical $51.15/TB. At a typical price, value equals the score. Cheaper raises it and dearer lowers it, but price counts for less than quality.
A factor we hold no value for scores zero rather than being skipped, so a drive we know little about never outranks a fully documented one. A low score with low confidence means undocumented, not bad. This is a specification index, not a benchmark, and it only compares hard drives with each other.
See every capacity of the Seagate BarraCuda on one page, or compare it with every other drive on the Hard Drives table. For what a hard drive gives up against an SSD, see SSD vs HDD.
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