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Silver 3.5 inch SAS hard drive with green circuit board visible

Seagate

Seagate ST3300655SS 300GB 15000 RPM SAS 3.5" internal hard drive

SKU CH-JN64-KEW2P

300 GB 15000 RPM SAS drive built for server workloads with 16 MB buffer

  • Total capacity300 GB
  • Interface typeSerial Attached SCSI (SAS)
  • Form factor3.5 in (8.89 cm)
  • Rotational speed15,000 RPM
  • Recommended useIdeal for Servers
  • 15000 RPM speed accelerates server workloads
  • SAS interface enables high-throughput data transfers
  • 300 GB capacity stores critical enterprise data
  • 5 inch form factor fits standard server bays
  • 16 MB buffer smooths burst I/O operations

Server-grade capacity and speed

The Seagate ST3300655SS is a 300GB 3.5-inch internal hard drive spinning at 15000 RPM with a Serial Attached SCSI interface. It is built for server environments where sustained throughput and low latency matter. The 16 MB buffer helps smooth burst workloads in multi-user systems.

Suitability profile

This drive suits administrators deploying or maintaining enterprise storage arrays, database servers or transaction-heavy applications that demand 15000 RPM performance over SAS. It is not for buyers who need larger capacities, quieter acoustics for desktop use, or interfaces other than SAS.

Deciding specification

The 15000 RPM spindle speed is the single figure that determines whether this drive matches the workload; it delivers the high IOPS required for latency-sensitive server tasks. Verify that the target chassis and controller support 3.5-inch SAS hot-plug drives 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 $24.99
Cheaper than about 93% 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 $83.30 per TB
Pricier than about 59% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Model nameST3300655SS
Total capacity300 GB
Recommended useIdeal for Servers
Performance
Rotational speed15,000 RPM
Ports & slots
Interface typeSerial Attached SCSI (SAS)
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

Will the 15000 RPM SAS drive work in my older server that only has 3 Gb/s SAS backplanes?

The drive uses the SAS interface and will negotiate down to the backplane speed, so it will operate on 3 Gb/s SAS backplanes.

How can I verify the 15000 RPM Cheetah is spinning at full speed after installation?

Check the drive’s reported rotational speed in the RAID controller BIOS or SMART data; it should show 15000 RPM.

Does the ST3300655SS come with a 3.5" mounting tray or do I need to buy one separately?

The drive is supplied as a bare 3.5" unit; a mounting tray or caddy for your server chassis must be purchased separately.

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