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Silver 3.5 inch SAS hard drive bare drive with circuit board visible

Seagate

Seagate Cheetah 15K.6 ST3300656SS 300GB 15000 RPM 32MB SAS 3.5" internal hard drive

SKU CH-4E0G-KYG6C MPN ST3300656SS

A 300 GB, 15 000 RPM SAS drive with 32 MB cache built for server workloads

  • Total capacity300 GB
  • Interface typeSAS
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeServer
  • Rotational speed15,000 RPM
  • 15000 RPM spindle reduces latency for transaction-heavy workloads
  • 32 MB cache absorbs burst I/O without stalling the SAS bus
  • SAS interface enables dual-port redundancy in server arrays
  • 300 GB capacity fits dense 3.5-inch drive bays
  • Cheetah 15K.6 series engineered for continuous server duty

Seagate Cheetah 15K.6 300GB SAS Drive

The Seagate Cheetah 15K.6 ST3300656SS is a 300GB 3.5-inch internal hard drive built for enterprise servers. It spins at 15000 RPM with a 32MB cache and connects through a SAS interface. This bare drive is sold new as end-of-sale stock.

Server Workloads and High-Speed Access

This drive suits administrators who need fast random-access performance for transactional databases or high-I/O server applications. The 15000 RPM spindle speed and SAS interface support demanding, continuous workloads. Buyers who need larger capacity per spindle or a different interface should consider other options.

15000 RPM Spindle Speed

The 15000 RPM rotation rate is the key specification that determines whether this drive meets your performance target. It delivers the low latency and high throughput required for primary server storage tiers. Verify that your controller and backplane support this speed before purchase.

How it compares

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

Price $248.99
Pricier than about 76% 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 $829.97 per TB
Pricier than about 90% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineCheetah 15K.6
Model nameST3300656SS
Total capacity300 GB
Recommended useIdeal for Servers
Performance
Rotational speed15,000 RPM
Storage
Flash memory typeServer
Cache memory32 MB
Ports & slots
Interface typeSAS
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight1.36 kg
Package size201 × 140 × 46 mm

Questions about this item

Does the bare drive include cables or a mounting bracket, or must those be bought separately?

The unit is supplied as a bare drive only; SAS cables and a 3.5" mounting bracket are not included and must be purchased separately.

This model is listed with a single 300 GB capacity and 32 MB cache — are there other versions to choose from?

The ST3300656SS is offered in this single 300 GB capacity with 32 MB cache; no alternative capacities or cache sizes exist for this part number.

What does the 15000 RPM rating mean for real-world server workloads?

The 15000 RPM spindle speed delivers very low rotational latency, which benefits random read and write performance in transaction-heavy server workloads.

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