HDD · SATA · 18TB
Seagate SkyHawk AI vs Toshiba N300 18TB
The price verdict
Toshiba N300 18TB has the lower cost per TB.
Price comparison, including shipping; not an overall reliability rating.
Compared drive
Seagate SkyHawk AI 18TB →$799.99
$44.44 / TB
Usedprices last checked 2026-10-13 18:07 UTC
Buy on eBay →↓ Lower cost / TB
Toshiba N300 18TB →$779.00
$43.28 / TB
Newprices last checked 2026-10-13 14:07 UTC
Buy on eBay →Some “Buy” links earn us a commission. Who pays us.
the short version
- ▸On today's best listings the Toshiba N300 18TB is 3% cheaper per terabyte ($43.28/TB vs $44.44/TB). Prices move — check the live table below.
- ▸The Seagate SkyHawk AI 18TB is rated for 550 TB/yr of workload against 180 TB/yr for the Toshiba N300 18TB — the difference between a nearline drive built for constant duty and one meant for lighter NAS cycles.
- ▸Warranty runs 5 years on the Seagate SkyHawk AI 18TB versus 3 on the Toshiba N300 18TB.
spec by spec
✓ marks the better value for each comparable specification.
| Spec | Seagate SkyHawk AI | Toshiba N300 |
|---|---|---|
| Cost per TB (today) | $44.44/TB | ✓$43.28/TB |
| Best total price | $799.99 | ✓$779.00 |
| Workload rating | ✓550 TB/yr | 180 TB/yr |
| Warranty | ✓5 years | 3 years |
| MTBF | 1.2M hours | 1.2M hours |
| Cache | 256 MB | 256 MB |
| Spindle speed | 7,200 RPM | 7,200 RPM |
| Recording | CMR | CMR |
| Form factor | 3.5" | 3.5" |
Specs are manufacturer figures for each family; prices are the cheapest in-stock listing found on the last ingest, including shipping. Used and refurbished listings may differ in firmware, sector size and remaining warranty — verify with the seller.
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