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Silver 3.5 inch bare hard drive with exposed circuit board

Seagate

Seagate ST3500320NS 500GB 7200 RPM 32MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-VQJC-1DVEH MPN ST3500320NS

A 500 GB, 7200 RPM SATA desktop drive with 32 MB cache built for 24/7 enterprise storage

  • 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
  • Enterprise-grade reliability built for 24x7 operation
  • 7200 RPM spindle speed enables fast data access
  • 32 MB cache buffers bursts for smoother throughput
  • SATA 3.0 Gb/s interface connects to standard desktop ports
  • 500 GB capacity stores large datasets in a 3.5" form factor

Enterprise-class capacity

The Seagate BarraCuda ES.2 ST3500320NS is a 500GB 3.5-inch internal hard drive built for 24x7 operation in enterprise storage environments. It spins at 7200 RPM with a 32MB cache and connects through a SATA 3.0Gb/s interface. The bare-drive packaging suits system integrators and IT departments deploying arrays or replacing failed units in existing servers.

Sustained-load behaviour

Designed for continuous duty, the drive offers best-in-class rotational vibration tolerance to maintain performance in multi-drive chassis. Average latency sits at 4.16ms, and the 7200 RPM spindle speed supports steady throughput during long write sequences. The 32MB buffer helps smooth burst traffic without throttling under prolonged workloads.

Upgrade context

This model delivers 33 percent more capacity than the earlier Barracuda ES drive while keeping the same 1.0-inch low-profile height. It fits legacy 3.5-inch bays using SATA 3.0Gb/s controllers, making it a direct replacement for older enterprise SATA drives. Buyers needing higher areal density or newer interfaces will not be served by this generation.

How it compares

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

Price $152.99
Pricier than about 61% 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 $305.98 per TB
Pricier than about 85% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineBarraCuda ES.2
Model nameST3500320NS
Total capacity500 GB
Recommended useFor Enterprise Storage
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)
Max height26.1 mm
Maximum width101.6 mm
Maximum length146.99 mm
Shipping weight0.51 kg
Package size147 × 102 × 25 mm

Questions about this item

How much power does the 7200 RPM ST3500320NS draw during continuous 24x7 operation?

The drive is designed for 24x7 enterprise use with rotational vibration tolerance, though the exact wattage figure is not supplied.

Does the bare drive ST3500320NS include the SATA data and power cables I need to install it?

No, the bare drive packaging means you must supply your own SATA data cable and a SATA power connector from the power supply.

Will the SATA 3.0Gb/s interface on this 3.5" drive work with my older SATA 1.5Gb/s motherboard port?

Yes, the SATA 3.0Gb/s interface is backward compatible with SATA 1.5Gb/s ports, operating at the lower speed.

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