Cache (MB): ST2000VX004 lists 64; ST2000VX015 lists 256.
Average idle power (W): ST2000VX004 lists 5.4; ST2000VX015 lists 2.5.
Cameras supported (up to): ST2000VX004 lists 32; ST2000VX015 lists 64.
Average operating power (W): ST2000VX004 lists 8; ST2000VX015 lists 3.7.
Rotational vibration sensors: ST2000VX004 lists No; ST2000VX015 lists Yes.
Sustained transfer (up to MB/s): ST2000VX004 lists 210; ST2000VX015 lists 180.

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 ST2000VX004 and ST2000VX015
Specification	ST2000VX004	ST2000VX015
Manufacturer	Seagate	Seagate
Product family	Surveillance HDD	SkyHawk
Model number	ST2000VX004	ST2000VX015
Capacity (TB)	2	2
Interface	SATA 6 Gb/s	SATA 6 Gb/s
Cache (MB)	64	256
Form factor	3.5-inch	3.5-inch
Package variant	+Rescue model (confirm service eligibility)	Not recorded
Load/unload cycles	300000	Not recorded
Drive bays supported	1–8	Not recorded
Average idle power (W)	5.4	2.5
Power-on hours per year	8760	8760
Cameras supported (up to)	32	64
Average operating power (W)	8	3.7
Rotational vibration sensors	No	Yes
Manufacturer limited warranty	3 years (eligible new drives)	3 years (eligible new drives)
Sustained transfer (up to MB/s)	210	180
Recording	Not recorded	SMR
Workload rating (TB/year)	Not recorded	180

Compatibility and buying checks

One or both drives use SMR recording. Check sustained-write and array requirements before choosing one for a NAS or a write-heavy workload.
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.