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Silver 3.5 inch bare hard drive with 68 pin SCSI connector

Seagate

Seagate ST3300655LW 300GB 15000 RPM 16MB SCSI Ultra320 68pin 3.5" internal hard drive

SKU CH-WWX8-E6SJ4 MPN ST3300655LW

A 300 GB, 15 000 RPM SCSI Ultra320 drive with 16 MB cache and 68-pin connector for 3.5-inch bays

  • Total capacity300 GB
  • Interface typeSCSI Ultra320 68pin
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed15,000 RPM
  • Cache memory16 MB
  • 15,000 RPM spindle speed cuts data-access latency
  • 16 MB cache smooths burst workloads
  • Ultra320 SCSI 68-pin interface delivers 320 MB/s bandwidth
  • 300 GB capacity fits dense server arrays
  • 5-inch 1.0-inch low-profile form factor saves rack space

Enterprise 300GB 15K SCSI Drive

The Seagate Cheetah 15K.5 ST3300655LW is a 300GB 3.5 inch internal hard drive spinning at 15000 RPM with a 16MB cache. It connects via a SCSI Ultra320 68pin interface and uses perpendicular recording technology. The bare drive measures 1.0 inch high and is supplied in new condition.

Suits legacy servers needing 68 pin Ultra320

This drive fits servers and storage arrays that require a 68 pin SCSI Ultra320 connection and a 3.5 inch form factor. The 15000 RPM spindle speed and low 2ms average latency support demanding enterprise workloads. It is not for systems that lack a 68 pin SCSI controller or that require a different physical interface.

The 68 pin Ultra320 interface decides fit

The single specification that determines compatibility is the SCSI Ultra320 68pin interface. Only hosts equipped with a matching 68 pin Ultra320 controller can use this drive. Verify the controller and backplane match this exact interface 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 $368.99
Pricier than about 88% 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 $1,229.97 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.5
Model nameST3300655LW
Total capacity300 GB
Performance
Rotational speed15,000 RPM
Mean latency2 ms
Storage
Cache memory16 MB
Ports & slots
Interface typeSCSI Ultra320 68pin
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight1.36 kg
Package size203 × 152 × 51 mm

Questions about this item

Does the bare drive include cables or a mounting bracket, or must they be purchased separately?

The drive ships as a bare unit only; 68-pin SCSI cables and any 3.5-inch mounting hardware are not included and must be sourced separately.

The listing shows a single 300 GB capacity — are other capacities available for this model?

This specific model number ST3300655LW is offered only in the 300 GB capacity; different capacities carry different model numbers.

What sustained throughput can I expect from the 15000 RPM mechanism on a real Ultra320 bus?

The 15000 RPM spindle and 16 MB cache deliver low 2 ms average latency, but actual sustained transfer rates depend on the host controller and workload.

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