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Silver 3.5 inch bare hard drive with circuit board visible

Seagate

Seagate ST3500320SV 500GB 7200 RPM 32MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-Q07J-GHDJC MPN ST3500320SV

A 500GB 3.5-inch SATA drive spinning at 7200 RPM with 32MB cache, built for 24x7 video surveillance recording

  • Total capacity500 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory32 MB
  • Designed for 24x7 surveillance with > 1 million hours MTBF
  • 7200 RPM spindle and 32MB cache deliver high throughput
  • SATA 3.0Gb/s interface for broad system compatibility
  • 500GB capacity stores multiple simultaneous video streams
  • 16ms average latency supports responsive recording performance

Surveillance-Grade 500 GB Drive

The Seagate SV35.3 ST3500320SV is a 500 GB 3.5-inch internal hard drive built for continuous video recording. It spins at 7200 RPM with a 32 MB cache and connects over a SATA 3.0 Gb/s interface. The drive is supplied as a bare unit and carries a design target of more than one million hours MTBF with an annualised failure rate below one percent.

Always-On Recording Workloads

This drive suits installers and system integrators deploying DVRs, NVRs or JBOD arrays that must write multiple streams around the clock. It is not intended for desktop boot duties, gaming libraries or workloads that demand the low latency of solid-state storage. Buyers who need higher capacities or faster random access should evaluate other storage classes.

SATA 3.0 Gb/s Interface

The single specification that decides fit is the SATA 3.0 Gb/s host connection. Any recorder or server backplane limited to this generation will accept the drive directly, while controllers that only support newer SATA speeds will still operate at the 3.0 Gb/s rate.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $53.99
Cheaper than about 75% of the 4,938 comparable items (median $107.99).
Total capacity 500 GB
Lower than about 80% of the 2,372 comparable items (median 2 TB).
Price per TB $107.98 per TB
Pricier than about 65% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineSV35.3
Model nameST3500320SV
Total capacity500 GB
Recommended useIdeal for Servers
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Cache memory32 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.45 kg
Package size203 × 152 × 51 mm

Questions about this item

Which SV35.3 version should I pick for a 500 GB surveillance array?

This model is the 500 GB variant of the SV35.3 series, offering 7200 RPM and 32 MB cache in a 3.5 inch form factor.

What does the 7200 RPM rating deliver in a live DVR?

The spindle speed supports sustained write throughput for multiple simultaneous video streams with low average latency of 4.16 ms.

How does the SATA 3.0 Gb/s interface limit real-world transfer?

The SATA 3.0 Gb/s link caps burst throughput at 3.0 Gb/s, so sustained rates will stay within that ceiling during recording.

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