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Silver 3.5 inch SAS hard drive with green circuit board

Seagate

Seagate ST373455SS-IM Cheetah 15K.5 73.4GB 15000 RPM 16MB SAS 3Gb/s 3.5" internal hard drive

SKU CH-MV7F-09KFX MPN ST373455SS-IM

A 3.5 inch SAS hard drive spinning at 15000 RPM with 73.4GB capacity and 16MB cache

  • Total capacity73.4 GB
  • Interface typeSAS 3Gb/s
  • Form factor3.5 in (8.89 cm)
  • Rotational speed15,000 RPM
  • Cache memory16 MB
  • 15,000 RPM spindle speed enables rapid data access for transaction-heavy workloads
  • 16 MB cache buffers bursts to sustain throughput during peak I/O
  • SAS interface connects directly to enterprise backplanes and RAID controllers
  • 5-inch form factor fits standard server drive bays and hot-swap trays
  • 4 GB capacity suits OS volumes, logging partitions and caching tiers

Seagate Cheetah 15K.5 73.4GB SAS Drive

The Seagate Cheetah 15K.5 ST373455SS-IM is a 3.5-inch internal hard drive built for enterprise servers and high-performance workstations. It delivers 73.4GB of storage on a SAS 3Gb/s interface with a 15000 RPM spindle speed and 16MB cache. This new drive suits IT professionals who need fast, reliable access to critical data in 3.5-inch drive bays.

Suits SAS 3Gb/s backplanes.

This drive fits systems with a SAS 3Gb/s controller and a standard 3.5-inch bay. It serves workloads that prioritise low latency and high IOPS over raw capacity. Buyers who need more storage space or a different interface should consider other options. The 15000 RPM speed targets transaction-heavy applications rather than bulk archiving.

15000 RPM spindle speed defines the use case

The 15000 RPM rotation rate is the key specification that determines whether this drive matches the workload. It provides the rapid seek times required for database logs, high-frequency trading logs or similar latency-sensitive tasks. If the application can use that rotational speed, the SAS 3Gb/s interface and 16MB cache complete the package.

How it compares

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

Price $58.99
Cheaper than about 71% of the 4,938 comparable items (median $107.99).
Total capacity 73.4 GB
Lower than about 98% of the 2,372 comparable items (median 2 TB).
Price per TB $803.68 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 nameST373455SS-IM
Total capacity73.4 GB
Performance
Rotational speed15,000 RPM
Storage
Cache memory16 MB
Ports & slots
Interface typeSAS 3Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight1.36 kg
Package size249 × 229 × 64 mm

Questions about this item

Does the SAS 3Gb/s interface limit sustained throughput during continuous heavy I/O?

The SAS 3Gb/s interface provides a 3 Gb/s link speed that governs maximum sustained data transfer during continuous operation.

How much heat and noise does the 15000 RPM mechanism produce when running all day?

The 15000 RPM spindle speed generates more heat and acoustic output than lower-speed drives, requiring adequate case airflow for all-day operation.

What host adapter or backplane is required to connect this SAS drive?

A SAS 3Gb/s compatible host bus adapter or backplane with a standard SAS connector is required to operate this drive.

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