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Seagate ST9120817AS, ST9250827AS, ST9200827AS Drive specifications, Specification summary table

Models: ST9120817AS ST9160827AS ST9200827AS ST9250827AS

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2.0Drive specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate the ST9250827AS, ST9200827AS, ST9160827AS, and ST9120817AS models.

2.1Specification summary table

The specifications listed in this table are for quick reference. For details on specification measurement or defi- nition, see the appropriate section of this manual.

Table 1:

Drive specifications

 

 

 

 

 

 

 

 

 

 

 

Drive specification

ST9250827AS

 

ST9200827AS

ST9160827AS

ST9120817AS

 

 

 

 

 

 

Formatted Gbytes

250

 

200

160

120

(512 bytes/sector)*

 

 

 

 

 

 

 

 

 

 

 

Guaranteed sectors

488,397,168

 

390,721,968

312,581,808

234,441,648

 

 

 

 

 

 

Bytes per sector

512

 

 

 

 

 

 

 

 

 

 

Physical read/write heads

4

 

4

3

2

 

 

 

 

 

 

 

Discs

 

2

 

2

2

1

 

 

 

 

 

 

Cache (Mbytes)

8

 

 

 

 

 

 

 

 

 

Recording density in BPI (bits/inch max)

1,180k

 

 

 

 

 

 

 

 

Track density TPI (tracks/inch max)

173k

 

 

 

 

 

 

 

 

 

Areal density (Gbits/inch2 max)

204

 

 

 

 

Spindle speed (RPM)

5,400

 

 

 

 

 

 

 

 

 

 

Internal transfer rate (Mbits/sec max)

778

 

 

 

 

 

 

 

 

 

 

Sustained transfer rate (Mbytes/sec max)

58

 

 

 

 

 

 

 

 

 

 

I/O data transfer rate (Mbytes/sec max)

300

 

 

 

 

 

 

 

 

ATA data-transfer modes supported

SATA 1.0, Serial ATA Revision 2.5

 

 

 

 

PIO modes 0–4

 

 

 

 

 

Multiword DMA modes 0–2

 

 

 

 

Ultra DMA modes 0–6

 

 

 

 

 

 

 

 

Height (max)

 

9.5 +/- 0.2 mm (0.374 +/- .0078 inches)

 

 

 

 

 

 

 

Width (max)

 

69.85 +/- 0.25 mm (2.75 +/- 0.0098 inches)

 

 

 

 

 

 

 

Length (max)

 

100.20 +/- 0.25 mm (3.945 +/- 0.010 inches)

 

 

 

 

 

 

Weight (typical)

</=102 grams (0.23 lb)

 

97 grams (0.21 lb)

 

 

 

 

 

 

Average latency (msec)

5.6

 

 

 

 

 

 

 

 

 

 

Power-on to ready (sec typical)

<3.0

 

 

 

 

 

 

 

 

 

 

Standby to ready (sec typical)

<2.0

 

 

 

 

 

 

 

 

Track-to-track seek time (msec typical)

<2.0 (read), <2.5 (write)

 

 

 

 

 

 

 

 

Average seek, read (msec typical)

<12.0

 

 

 

 

 

 

 

 

 

 

Average seek, write (msec typical)

<14.0

 

 

 

 

 

 

 

 

 

 

 

Momentus 5400.4 SATA Product Manual, Rev. A

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Seagate ST9120817AS, ST9250827AS, ST9200827AS, ST9160827AS manual Drive specifications, Specification summary table
Page 10 Page 12

ST9120817AS, ST9160827AS, ST9200827AS, ST9250827AS specifications

The Seagate ST9250827AS, ST9200827AS, ST9160827AS, and ST9120817AS are notable hard drives that have made their mark in the storage industry, primarily due to their reliable performance, capacity options, and advanced technologies. Each model is tailored to meet the needs of different user scenarios, making them versatile choices for both personal and enterprise applications.

The ST9250827AS, with a capacity of 250GB, is designed for users requiring sufficient storage for general applications. Ideal for laptops and external drives, it offers a 5400 RPM spindle speed, ensuring quick access times and efficient data retrieval. The drive also incorporates Seagate’s Advanced Power Management technology, which helps extend battery life in portable devices by optimizing power consumption.

The ST9200827AS steps up with a 320GB capacity, catering to users needing increased storage for larger files, applications, and media collections. With similar 5400 RPM performance, it balances speed and energy efficiency. This model is suitable for those looking to enhance their mobile experience without sacrificing performance.

The ST9160827AS, a 160GB variant, is a compact solution for users needing a smaller footprint. It retains the energy efficiency and power management features present in the other models while delivering adequate performance for everyday computing tasks. This model is particularly suited for older machines or as a secondary drive in systems where space is at a premium.

Lastly, the ST9120817AS, with its 120GB capacity, is the smallest of the lot, perfect for basic storage needs. It’s well-suited for entry-level laptops or as a backup option for essential data. While its capacity may be limited compared to the others, it maintains the same reliability and efficiency attributed to Seagate’s technology.

All four models utilize Seagate's Drive Trust Technology, ensuring data integrity and security. They are built using Seagate's hard drive technologies that emphasize durability and reliability. These drives are also equipped with a SATA interface, facilitating fast data transfer rates and seamless integration with a wide range of computing devices.

In summary, the Seagate ST9250827AS, ST9200827AS, ST9160827AS, and ST9120817AS hard drives provide varying capacities and consistent performance, catering to diverse user requirements. Their blend of energy-efficient operation, advanced technology, and dependable storage solutions make them suitable for both personal and professional use, ensuring reliable data management across all applications.