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Silver 2.5 inch SATA hard drive bare drive

Seagate

Seagate Constellation ST9500530NS 500GB 7200 RPM 32MB SATA 3.0Gb/s 2.5" laptop hard drive

SKU CH-3ZGA-TR31P MPN ST9500530NS

A 500 GB, 7200 RPM, 2.5-inch SATA laptop drive with 32 MB cache and 4.16 ms latency

  • Total capacity500 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Cache memory32 MB
  • Mean latency4.16 ms
  • 7200 RPM spindle for fast data access
  • 500 GB capacity stores large workloads
  • 32 MB cache smooths burst transfers
  • SATA 3.0 Gb/s interface fits existing systems
  • 5 inch form factor suits laptop bays

Purpose-built nearline drive

The Seagate Constellation ST9500530NS is a 2.5-inch enterprise-class hard drive with 500GB capacity, 7200 RPM spindle speed and a 32MB cache. It connects over a SATA 3.0Gb/s interface and is sold as a bare drive in new condition.

Suited for nearline tiers, not primary boot

This drive suits system builders who need cost-effective, low-power nearline storage in a 2.5-inch chassis for tiered environments or direct-attach arrays. It is not for buyers who require a current manufacturer warranty, larger capacities or the higher throughput of modern solid-state storage.

The SATA 3.0Gb/s interface decides fit

The drive uses the SATA 3.0Gb/s interface, so the host system must provide a compatible SATA port and power connection. Average latency is 4.16ms at 7200 RPM. Verify that your chassis, backplane or caddy accepts a standard 2.5-inch SATA drive before purchase.

How it compares

Measured against everything we stock in 2.5-Inch Internal Laptop HDDs, at today’s prices. Recalculated every night.

Price $61.99
Cheaper than about 55% of the 645 comparable items (median $66.99).
Total capacity 500 GB
Higher than about 60% of the 419 comparable items (median 320 GB).
Price per TB $123.98 per TB
Cheaper than about 75% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameSeagate
Product lineConstellation
Model nameST9500530NS
Total capacity500 GB
Performance
Mean latency4.16 ms
Rotational speed7,200 RPM
Storage
Cache memory32 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Shipping weight0.91 kg
Package size102 × 71 × 13 mm

Questions about this item

How does the 7200 RPM spindle speed affect sustained throughput limits?

The 7200 RPM rotation provides consistent mechanical throughput for nearline workloads, with a 4.16 ms average latency that defines the drive's sustained random-access ceiling.

What are the heat and noise characteristics when the drive runs continuously in a 2.5" bay?

Designed for low power usage in 2.5" chassis, the Constellation drive maintains manageable heat and acoustic levels during all-day direct-attach or tiered storage operation.

Which host interface must my laptop or enclosure provide for this ST9500530NS to work?

The drive requires a SATA 3.0Gb/s port; it connects via the standard SATA data and power connectors found on compatible 2.5" laptop bays or drive enclosures.

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