RPM: ST4000NT001 lists 7200; ST4000VN006 lists 5400.
Workload rating (TB/year): ST4000NT001 lists 550; ST4000VN006 lists 180.
Average operating power (W): ST4000NT001 lists 8.7; ST4000VN006 lists 3.7.
Manufacturer limited warranty: ST4000NT001 lists 5 years (eligible new drives); ST4000VN006 lists 3 years (eligible new drives).
Sustained transfer (up to MB/s): ST4000NT001 lists 250; ST4000VN006 lists 202.

A larger cache, higher RPM or higher advertised sequential speed alone does not establish which drive is better for your workload.

Specifications side by side

Show differences only

Manufacturer specifications for ST4000NT001 and ST4000VN006
Specification	ST4000NT001	ST4000VN006
Manufacturer	Seagate	Seagate
Product family	IronWolf Pro	IronWolf
Model number	ST4000NT001	ST4000VN006
Capacity (TB)	4	4
RPM	7200	5400
Interface	SATA 6 Gb/s	SATA 6 Gb/s
Recording	CMR	CMR
Cache (MB)	256	256
Form factor	3.5-inch	3.5-inch
Power-on hours per year	8760	8760
Workload rating (TB/year)	550	180
Average operating power (W)	8.7	3.7
Rotational vibration sensors	Yes	Yes
Manufacturer limited warranty	5 years (eligible new drives)	3 years (eligible new drives)
Sustained transfer (up to MB/s)	250	202
Load/unload cycles	Not recorded	600000
Average idle power (W)	Not recorded	3.2

Compatibility and buying checks

Compare new and renewed offers separately. The manufacturer specification does not guarantee the warranty or return policy of a marketplace seller.

Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.

Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.