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Silver 3.5 inch bare hard drive with green circuit board exposed

Seagate

Seagate Cheetah 15K.6 ST3146356SS 146GB 15000 RPM 16MB SAS 3Gb/s 3.5" internal hard drive

SKU CH-X0JK-CJV9N MPN ST3146356SS

A 146GB 3.5-inch SAS drive spinning at 15000 RPM with 16MB cache and 3.4ms average seek time for server workloads

  • Total capacity146 GB
  • Interface typeSAS 3Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed15,000 RPM
  • Cache memory16 MB
  • 15000 RPM spindle delivers fast data access for server workloads
  • 4 ms average seek time reduces latency in transaction-heavy applications
  • SAS 3Gb/s interface provides reliable connectivity for enterprise storage arrays
  • 146 GB capacity fits operating system and critical application volumes
  • 16 MB cache buffers bursts to sustain throughput under load

Server Storage Drive

The Seagate Cheetah 15K.6 ST3146356SS is a 3.5-inch internal hard drive built for server environments. It delivers 146GB of capacity with a 15000 RPM spindle speed and a SAS 3Gb/s interface. The 16MB cache supports the high throughput demanded by transactional workloads.

Fit and Limits

This drive suits administrators maintaining legacy SAS arrays that require a 15K RPM replacement part. It is not for buyers who need larger capacities than 146GB or who require a modern interface standard beyond SAS 3Gb/s. Systems without a compatible SAS controller cannot use this drive.

Deciding Specification

The SAS 3Gb/s interface is the single specification that determines compatibility. The drive will only function in backplanes and controllers that explicitly support this signalling rate. Verify the host bus adapter or RAID card lists SAS 3Gb/s 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 $153.99
Pricier than about 61% of the 4,938 comparable items (median $107.99).
Total capacity 146 GB
Lower than about 94% of the 2,372 comparable items (median 2 TB).
Price per TB $1,054.73 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 nameST3146356SS
Total capacity146 GB
Recommended useIdeal for Servers
Performance
Rotational speed15,000 RPM
Average seek time3.4 ms
Mean write time3.9 ms
Mean latency2 ms
Storage
Cache memory16 MB
Ports & slots
Interface typeSAS 3Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight1.36 kg
Package size178 × 133 × 38 mm

Questions about this item

How much heat and noise does the 15000 RPM Cheetah 15K.6 generate when running continuously in a server?

The 15000 RPM spindle and 3.4 ms average seek time mean higher sustained heat and audible whine than slower drives; plan for active airflow in the chassis.

What controller or backplane must I already have for the SAS 3Gb/s interface on this ST3146356SS?

A SAS 3Gb/s HBA, RAID card or server backplane with a standard SAS data and power connector is required for the drive to function.

Will the 3.5-inch form factor and SAS interface let me keep using my older 3Gb/s SAS enclosure?

Yes, the 3.5-inch form factor and native SAS 3Gb/s interface match legacy SAS enclosures and backplanes directly.

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