Buying guide

NAS Hard Drives

Our pick

Seagate IronWolf Pro 32TB

Choose the Seagate IronWolf Pro 32TB for a large NAS archive that needs high capacity per bay.¹

Why this one

Its 32TB capacity gives each bay more storage than the 20TB WD Red Pro; both specify CMR recording, a 550TB yearly workload rating and a five-year warranty.¹²
It also includes three years of Rescue recovery service where available, separate from its hardware warranty.¹

Read the review

Compare the alternatives

The alternatives

Other contenders

Seagate IronWolf 4TB
Choose the IronWolf 4TB for a smaller archive needing only 4TB per bay; this CMR variant lists a 180TB yearly workload rating and three-year warranty.³⁴⁵
Seagate IronWolf Pro 18TB
Choose the older IronWolf Pro 18TB for an approved 18TB setup, with a five-year warranty and a 300TB yearly workload rating; check registration, shipment-date and country limits for its recovery offer.⁶
WD Red Pro 20TB
Choose the WD Red Pro 20TB when 20TB per bay fits your storage plan; it lists a five-year warranty and a 550TB yearly workload rating.²

Buying advice

Check your NAS maker’s supported model, firmware and capacity list, then calculate usable space after the storage layout. Match the annual workload allowance to your reads and writes, and keep a separate backup.¹²¹⁰

20 models / at a glance

Key differences

Every specification ↗

Seagate IronWolf Pro 32TB

Capacity · TB32 TB¹Higher preferred ↑

Workload rating · TB/year550 TB/year¹Higher preferred ↑

Warranty · years5 years¹Higher preferred ↑

Seagate IronWolf 4TB

Capacity · TB4 TB³Higher preferred ↑

Workload rating · TB/year180 TB/year³Higher preferred ↑

Warranty · years3 years⁵Higher preferred ↑

Seagate IronWolf 18TB

Capacity · TB18 TB⁷Higher preferred ↑

Workload rating · TB/year180 TB/year⁷Higher preferred ↑

Warranty · years3 years⁷Higher preferred ↑

Seagate IronWolf Pro 18TB

Capacity · TB18 TB⁶Higher preferred ↑

Workload rating · TB/year300 TB/year⁶Higher preferred ↑

Warranty · years5 years⁶Higher preferred ↑

Seagate IronWolf Pro 30TB

Capacity · TB30 TB⁸Higher preferred ↑

Workload rating · TB/year550 TB/year⁸Higher preferred ↑

Warranty · years5 years⁸Higher preferred ↑

Toshiba N300 4 TB

Capacity · TB4 TB⁹Higher preferred ↑

Workload rating · TB/year180 TB/year⁹Higher preferred ↑

Warranty · years3 years⁹Higher preferred ↑

Toshiba N300 6 TB

Capacity · TB6 TB¹⁰Higher preferred ↑

Workload rating · TB/year180 TB/year¹⁰Higher preferred ↑

Warranty · years3 years¹⁰Higher preferred ↑

Toshiba N300 8 TB

Capacity · TB8 TB¹⁰Higher preferred ↑

Workload rating · TB/year180 TB/year¹⁰Higher preferred ↑

Warranty · years3 years¹⁰Higher preferred ↑

Toshiba N300 10 TB

Capacity · TB10 TB⁹Higher preferred ↑

Workload rating · TB/year180 TB/year⁹Higher preferred ↑

Warranty · years3 years⁹Higher preferred ↑

Toshiba N300 12 TB

Capacity · TB12 TB¹¹Higher preferred ↑

Workload rating · TB/year180 TB/year¹⁰Higher preferred ↑

Warranty · years3 years¹⁰Higher preferred ↑

Toshiba N300 14 TB

Capacity · TB14 TB¹²Higher preferred ↑

Workload rating · TB/year180 TB/year¹⁰Higher preferred ↑

Warranty · years3 years¹⁰Higher preferred ↑

Toshiba N300 16 TB

Capacity · TB16 TB¹⁰Higher preferred ↑

Workload rating · TB/year180 TB/year¹⁰Higher preferred ↑

Warranty · years3 years¹⁰Higher preferred ↑

Toshiba N300 18 TB

Capacity · TB18 TB¹³Higher preferred ↑

Workload rating · TB/year180 TB/year¹⁰Higher preferred ↑

Warranty · years3 years¹⁰Higher preferred ↑

Toshiba N300 20 TB

Capacity · TB20 TB¹⁰Higher preferred ↑

Workload rating · TB/year180 TB/year¹⁰Higher preferred ↑

Warranty · years3 years¹⁰Higher preferred ↑

Toshiba N300 22 TB

Capacity · TB22 TB¹⁴Higher preferred ↑

Workload rating · TB/year180 TB/year¹⁰Higher preferred ↑

Warranty · years3 years¹⁰Higher preferred ↑

Toshiba N300 Pro 16TB

Capacity · TB16 TB¹⁵Higher preferred ↑

Workload rating · TB/year300 TB/year¹⁵Higher preferred ↑

Warranty · years5 years¹⁵Higher preferred ↑

Toshiba N300 Pro 18TB

Capacity · TB18 TB¹⁵Higher preferred ↑

Workload rating · TB/year300 TB/year¹⁵Higher preferred ↑

Warranty · years5 years¹⁵Higher preferred ↑

WD Red Pro 18TB

Capacity · TB18 TB¹⁶Higher preferred ↑

Workload rating · TB/year550 TB/year¹⁶Higher preferred ↑

Warranty · years5 years¹⁶Higher preferred ↑

WD Red Pro 20TB

Capacity · TB20 TB²Higher preferred ↑

Workload rating · TB/year550 TB/year²Higher preferred ↑

Warranty · years5 years²Higher preferred ↑

WD Red Pro 22TB

Capacity · TB22 TB¹⁷Higher preferred ↑

Workload rating · TB/year550 TB/year¹⁷Higher preferred ↑

Warranty · years5 years¹⁷Higher preferred ↑

Compare the options

20 products

Narrow your options

Capacity (TB)Minimum

Workload rating (TB/year)Minimum

Warranty (years)Minimum

OrderReset requirements

Horizontal axisVertical axis

20 models compared.

Workload rating (TB/year); higher is preferred · 0 to 550

Capacity (TB); higher is preferred · 0 to 32

Seagate IronWolf Pro 32TB

Capacity: 32 TB
Workload rating: 550 TB/year

View product details

Seagate IronWolf Pro 32TB

Capacity: 32 TB¹
Workload rating: 550 TB/year¹
Warranty: 5 years¹

View product

Seagate IronWolf 4TB

Capacity: 4 TB³
Workload rating: 180 TB/year³
Warranty: 3 years⁵

View product

Seagate IronWolf 18TB

Capacity: 18 TB⁷
Workload rating: 180 TB/year⁷
Warranty: 3 years⁷

View product

Seagate IronWolf Pro 18TB

Capacity: 18 TB⁶
Workload rating: 300 TB/year⁶
Warranty: 5 years⁶

View product

Seagate IronWolf Pro 30TB

Capacity: 30 TB⁸
Workload rating: 550 TB/year⁸
Warranty: 5 years⁸

View product

Toshiba N300 4 TB

Capacity: 4 TB⁹
Workload rating: 180 TB/year⁹
Warranty: 3 years⁹

View product

Toshiba N300 6 TB

Capacity: 6 TB¹⁰
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

View product

Toshiba N300 8 TB

Capacity: 8 TB¹⁰
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

View product

Toshiba N300 10 TB

Capacity: 10 TB⁹
Workload rating: 180 TB/year⁹
Warranty: 3 years⁹

View product

Toshiba N300 12 TB

Capacity: 12 TB¹¹
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

View product

Toshiba N300 14 TB

Capacity: 14 TB¹²
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

View product

Toshiba N300 16 TB

Capacity: 16 TB¹⁰
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

View product

Toshiba N300 18 TB

Capacity: 18 TB¹³
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

View product

Toshiba N300 20 TB

Capacity: 20 TB¹⁰
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

View product

Toshiba N300 22 TB

Capacity: 22 TB¹⁴
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

View product

Toshiba N300 Pro 16TB

Capacity: 16 TB¹⁵
Workload rating: 300 TB/year¹⁵
Warranty: 5 years¹⁵

View product

Toshiba N300 Pro 18TB

Capacity: 18 TB¹⁵
Workload rating: 300 TB/year¹⁵
Warranty: 5 years¹⁵

View product

WD Red Pro 18TB

Capacity: 18 TB¹⁶
Workload rating: 550 TB/year¹⁶
Warranty: 5 years¹⁶

View product

WD Red Pro 20TB

Capacity: 20 TB²
Workload rating: 550 TB/year²
Warranty: 5 years²

View product

WD Red Pro 22TB

Capacity: 22 TB¹⁷
Workload rating: 550 TB/year¹⁷
Warranty: 5 years¹⁷

View product

Compare models side by side

Models in this comparison

Seagate IronWolf Pro 32TB

Capacity: 32 TB¹
Workload rating: 550 TB/year¹
Warranty: 5 years¹

Seagate IronWolf 4TB

Capacity: 4 TB³
Workload rating: 180 TB/year³
Warranty: 3 years⁵

Seagate IronWolf 18TB

Capacity: 18 TB⁷
Workload rating: 180 TB/year⁷
Warranty: 3 years⁷

Seagate IronWolf Pro 18TB

Capacity: 18 TB⁶
Workload rating: 300 TB/year⁶
Warranty: 5 years⁶

Seagate IronWolf Pro 30TB

Capacity: 30 TB⁸
Workload rating: 550 TB/year⁸
Warranty: 5 years⁸

Toshiba N300 4 TB

Capacity: 4 TB⁹
Workload rating: 180 TB/year⁹
Warranty: 3 years⁹

Toshiba N300 6 TB

Capacity: 6 TB¹⁰
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

Toshiba N300 8 TB

Capacity: 8 TB¹⁰
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

Toshiba N300 10 TB

Capacity: 10 TB⁹
Workload rating: 180 TB/year⁹
Warranty: 3 years⁹

Toshiba N300 12 TB

Capacity: 12 TB¹¹
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

Toshiba N300 14 TB

Capacity: 14 TB¹²
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

Toshiba N300 16 TB

Capacity: 16 TB¹⁰
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

Toshiba N300 18 TB

Capacity: 18 TB¹³
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

Toshiba N300 20 TB

Capacity: 20 TB¹⁰
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

Toshiba N300 22 TB

Capacity: 22 TB¹⁴
Workload rating: 180 TB/year¹⁰
Warranty: 3 years¹⁰

Toshiba N300 Pro 16TB

Capacity: 16 TB¹⁵
Workload rating: 300 TB/year¹⁵
Warranty: 5 years¹⁵

Toshiba N300 Pro 18TB

Capacity: 18 TB¹⁵
Workload rating: 300 TB/year¹⁵
Warranty: 5 years¹⁵

WD Red Pro 18TB

Capacity: 18 TB¹⁶
Workload rating: 550 TB/year¹⁶
Warranty: 5 years¹⁶

WD Red Pro 20TB

Capacity: 20 TB²
Workload rating: 550 TB/year²
Warranty: 5 years²

WD Red Pro 22TB

Capacity: 22 TB¹⁷
Workload rating: 550 TB/year¹⁷
Warranty: 5 years¹⁷

Every specification for these products

Specification	Seagate IronWolf Pro 32TB	Seagate IronWolf 4TB	Seagate IronWolf 18TB	Seagate IronWolf Pro 18TB	Seagate IronWolf Pro 30TB	Toshiba N300 4 TB	Toshiba N300 6 TB	Toshiba N300 8 TB	Toshiba N300 10 TB	Toshiba N300 12 TB	Toshiba N300 14 TB	Toshiba N300 16 TB	Toshiba N300 18 TB	Toshiba N300 20 TB	Toshiba N300 22 TB	Toshiba N300 Pro 16TB	Toshiba N300 Pro 18TB	WD Red Pro 18TB	WD Red Pro 20TB	WD Red Pro 22TB
Capacity	32 TB¹	4 TB³	18 TB⁷	18 TB⁶	30 TB⁸	4 TB⁹	6 TB¹⁰	8 TB¹⁰	10 TB⁹	12 TB¹¹	14 TB¹²	16 TB¹⁰	18 TB¹³	20 TB¹⁰	22 TB¹⁴	16 TB¹⁵	18 TB¹⁵	18 TB¹⁶	20 TB²	22 TB¹⁷
Workload rating	550 TB/year¹	180 TB/year³	180 TB/year⁷	300 TB/year⁶	550 TB/year⁸	180 TB/year⁹	180 TB/year¹⁰	180 TB/year¹⁰	180 TB/year⁹	180 TB/year¹⁰	180 TB/year¹⁰	180 TB/year¹⁰	180 TB/year¹⁰	180 TB/year¹⁰	180 TB/year¹⁰	300 TB/year¹⁵	300 TB/year¹⁵	550 TB/year¹⁶	550 TB/year²	550 TB/year¹⁷
Warranty	5 years¹	3 years⁵	3 years⁷	5 years⁶	5 years⁸	3 years⁹	3 years¹⁰	3 years¹⁰	3 years⁹	3 years¹⁰	3 years¹⁰	3 years¹⁰	3 years¹⁰	3 years¹⁰	3 years¹⁰	5 years¹⁵	5 years¹⁵	5 years¹⁶	5 years²	5 years¹⁷
MTBF rating	2,500,000 hours¹	1,000,000 hours³	1,000,000 hours⁷	1,200,000 hours⁶	2,500,000 hours⁸	1,000,000 hours⁹	1,000,000 hours¹⁰	1,000,000 hours¹⁰	1,000,000 hours⁹	1,200,000 hours¹⁰	1,200,000 hours¹⁰	1,200,000 hours¹⁰	1,200,000 hours¹⁰	1,200,000 hours¹⁰	1,200,000 hours¹⁰	1,200,000 hours¹⁸	1,200,000 hours¹⁹	2,500,000 hours¹⁶	2,500,000 hours²	1,000,000 hours²⁰
Drive bays supported	Not published	Not published	8 bays⁷	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published
Vibration sensors	Yes¹	Not published	Yes⁷	Yes⁶	Yes⁸	Yes⁹	Not published	Not published	Yes⁹	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Yes¹⁵	Not published	Yes²	Not published
Idle noise	Not published	Not published	Not published	Not published	28 dBA⁸	34 dBA⁹	Not published	Not published	34 dBA⁹	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	20 dBA²⁰
Operating power	8.3 W¹	Not published	Not published	8.0 W⁶	8.3 W⁸	7.43 W⁹	Not published	Not published	9.07 W⁹	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	6.8 W²⁰
Data recovery included	Yes¹	Not published	Yes⁷	Yes⁶	Yes⁸	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published
Interface	SATA 6Gb/s¹	SATA 6 Gb/s⁵	SATA 6Gb/s⁷	SATA 6Gb/s⁶	SATA 6Gb/s⁸	SATA 6.0 Gbit/s⁹	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s⁹	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁵	SATA 6.0 Gbit/s¹⁵	SATA 6.0 Gbit/s¹⁶	SATA 6Gb/s²¹	SATA 6 Gb/s²⁰
Form factor	3.5-inch²²	3.5"³	3.5"¹⁶	3.5"¹⁶	3.5-inch²³	3.5-inch⁹	3.5-inch¹⁰	3.5-inch¹⁰	3.5-inch⁹	Bauform 3,5 Zoll¹¹	Bauform 3,5 Zoll¹²	3.5-inch¹⁰	Bauform 3,5 Zoll¹³	3.5-inch¹⁰	Bauform 3,5 Zoll¹⁴	3.5-inch¹⁵	3.5-inch¹⁵	3.5"¹⁶	3.5-inch²	3.5-Inch¹⁷

How they compare

Scroll the table to see every product and specification.

Specification	Our pickSeagate IronWolf Pro 32TB	Seagate IronWolf 4TB	Seagate IronWolf 18TB	Seagate IronWolf Pro 18TB	Seagate IronWolf Pro 30TB	Toshiba N300 4 TB	Toshiba N300 6 TB	Toshiba N300 8 TB	Toshiba N300 10 TB	Toshiba N300 12 TB	Toshiba N300 14 TB	Toshiba N300 16 TB	Toshiba N300 18 TB	Toshiba N300 20 TB	Toshiba N300 22 TB	Toshiba N300 Pro 16TB	Toshiba N300 Pro 18TB	WD Red Pro 18TB	WD Red Pro 20TB	WD Red Pro 22TB
Capacity	32 TB¹	4 TB³	18 TB⁷	18 TB⁶	30 TB⁸	4 TB⁹	6 TB¹⁰	8 TB¹⁰	10 TB⁹	12 TB¹¹	14 TB¹²	16 TB¹⁰	18 TB¹³	20 TB¹⁰	22 TB¹⁴	16 TB¹⁵	18 TB¹⁵	18 TB¹⁶	20 TB²	22 TB¹⁷
Workload rating	550 TB/year¹	180 TB/year³	180 TB/year⁷	300 TB/year⁶	550 TB/year⁸	180 TB/year⁹	180 TB/year¹⁰	180 TB/year¹⁰	180 TB/year⁹	180 TB/year¹⁰	180 TB/year¹⁰	180 TB/year¹⁰	180 TB/year¹⁰	180 TB/year¹⁰	180 TB/year¹⁰	300 TB/year¹⁵	300 TB/year¹⁵	550 TB/year¹⁶	550 TB/year²	550 TB/year¹⁷
Warranty	5 years¹	3 years⁵	3 years⁷	5 years⁶	5 years⁸	3 years⁹	3 years¹⁰	3 years¹⁰	3 years⁹	3 years¹⁰	3 years¹⁰	3 years¹⁰	3 years¹⁰	3 years¹⁰	3 years¹⁰	5 years¹⁵	5 years¹⁵	5 years¹⁶	5 years²	5 years¹⁷
MTBF rating	2,500,000 hours¹	1,000,000 hours³	1,000,000 hours⁷	1,200,000 hours⁶	2,500,000 hours⁸	1,000,000 hours⁹	1,000,000 hours¹⁰	1,000,000 hours¹⁰	1,000,000 hours⁹	1,200,000 hours¹⁰	1,200,000 hours¹⁰	1,200,000 hours¹⁰	1,200,000 hours¹⁰	1,200,000 hours¹⁰	1,200,000 hours¹⁰	1,200,000 hours¹⁸	1,200,000 hours¹⁹	2,500,000 hours¹⁶	2,500,000 hours²	1,000,000 hours²⁰
Drive bays supported	Not published	Not published	8 bays⁷	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published
Vibration sensors	Yes¹	Not published	Yes⁷	Yes⁶	Yes⁸	Yes⁹	Not published	Not published	Yes⁹	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Yes¹⁵	Not published	Yes²	Not published
Idle noise	Not published	Not published	Not published	Not published	28 dBA⁸	34 dBA⁹	Not published	Not published	34 dBA⁹	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	20 dBA²⁰
Operating power	8.3 W¹	Not published	Not published	8.0 W⁶	8.3 W⁸	7.43 W⁹	Not published	Not published	9.07 W⁹	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	6.8 W²⁰
Data recovery included	Yes¹	Not published	Yes⁷	Yes⁶	Yes⁸	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published	Not published
Interface	SATA 6Gb/s¹	SATA 6 Gb/s⁵	SATA 6Gb/s⁷	SATA 6Gb/s⁶	SATA 6Gb/s⁸	SATA 6.0 Gbit/s⁹	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s⁹	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁰	SATA 6.0 Gbit/s¹⁵	SATA 6.0 Gbit/s¹⁵	SATA 6.0 Gbit/s¹⁶	SATA 6Gb/s²¹	SATA 6 Gb/s²⁰
Form factor	3.5-inch²²	3.5"³	3.5"¹⁶	3.5"¹⁶	3.5-inch²³	3.5-inch⁹	3.5-inch¹⁰	3.5-inch¹⁰	3.5-inch⁹	Bauform 3,5 Zoll¹¹	Bauform 3,5 Zoll¹²	3.5-inch¹⁰	Bauform 3,5 Zoll¹³	3.5-inch¹⁰	Bauform 3,5 Zoll¹⁴	3.5-inch¹⁵	3.5-inch¹⁵	3.5"¹⁶	3.5-inch²	3.5-Inch¹⁷

The alternatives

Other contenders

Buying advice

Key differences

Compare the options

Narrow your options

Seagate IronWolf Pro 32TB

Models in this comparison

How they compare

Sources

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