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Seagate 3.5 inch SAS hard drive silver metal casing

Seagate

Seagate ST3300657SS 300GB SAS 3.5" 15000 RPM

SKU CH-N4D4-CN724

A 300 GB SAS desktop drive spinning at 15000 RPM with hot-swap support

  • Total capacity300 GB
  • Interface typeSAS 6Gb/s
  • Form factor3.5 in (8.89 cm)
  • Rotational speed15,000 RPM
  • Key featuresHot Swap
  • 15000 RPM spindle speed accelerates transaction workloads
  • 300 GB capacity stores business-critical data sets
  • SAS 6Gb/s interface enables hot-plug drive replacement
  • 16 MB cache buffers burst I/O for email servers
  • 10× lower non-recoverable error rate protects stored assets

Purpose-built storage

The Seagate ST3300657SS is a 300GB 3.5 inch SAS hard drive spinning at 15000 RPM. It targets enterprise servers and storage arrays that demand high transaction rates and consistent low latency for databases, email and virtualisation workloads.

Hot-swap readiness

The drive supports hot-plug insertion and removal in compatible SAS backplanes. This capability lets administrators replace a failed unit or expand capacity without powering down the chassis, reducing service windows for mission-critical systems.

Capacity ceiling

The 300GB capacity and 16MB cache suit read-heavy applications and tiered storage pools where speed outweighs raw space. Workloads requiring multi-terabyte volumes or sequential throughput above the single-spindle limit will need additional drives or a different media class.

How it compares

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

Price $36.99
Cheaper than about 89% of the 4,938 comparable items (median $107.99).
Total capacity 300 GB
Lower than about 88% of the 2,372 comparable items (median 2 TB).
Price per TB $123.30 per TB
Pricier than about 68% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Total capacity300 GB
Performance
Rotational speed15,000 RPM
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

Will the 15000 RPM spindle require any periodic maintenance or bearing replacement?

No user-serviceable parts are inside the sealed enclosure; the drive is replaced as a unit when it reaches end of life.

What limit appears first during sustained 6Gb/s SAS transfers on this 300GB drive?

The mechanical 15000 RPM rotational speed caps sustained throughput before the 6Gb/s interface saturates.

How much noise and heat does the 3.5" Cheetah 15K.5 produce when running continuously?

High-speed 15000 RPM operation generates noticeable whine and elevated case temperature; forced airflow is recommended.

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