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 ST9120826A, ST9100826A, ST980821A, ST960814A, and ST940811A model drives.

2.1Specification summary

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

Table 1:

Specifications

 

 

 

 

 

 

 

 

 

 

 

Drive specification

ST9120826A

ST9100826A

ST980821A

ST960814A

ST940811A

 

 

 

 

 

 

Formatted Gbytes (512 bytes/sector)*

120

100

80

60

40

 

 

 

 

 

 

Guaranteed sectors

234,441,648

195,371,568

156,301,488

117,210,240

78,140,160

 

 

 

 

 

 

Bytes per sector

512

 

 

 

 

 

 

 

 

 

 

Physical read/write heads

4

4

3

2

2

 

 

 

 

 

 

 

Discs

 

2

2

2

1

1

 

 

 

 

 

 

Cache (Mbytes)

8

 

 

 

 

 

 

 

 

 

 

Recording density,

778,000

 

 

 

 

BPI (bits/inch typical)

 

 

 

 

 

 

 

 

 

 

 

 

Track density.

 

126,000

 

 

 

 

TPI (tracks/inch typical)

 

 

 

 

 

 

 

 

 

 

 

Areal density (Gbits/inch2 max)

98.2

 

 

 

 

Spindle speed (RPM)

5,400

 

 

 

 

 

 

 

 

 

 

Internal data transfer rate OD

42

 

 

 

 

(Mbytes/sec max)

 

 

 

 

 

 

 

 

 

 

 

I/O data-transfer rate

100

 

 

 

 

(Mbytes/sec max)

 

 

 

 

 

 

 

 

 

 

 

ATA data-transfer

PIO modes 0–4

 

 

 

 

modes supported

Ultra DMA modes 0–5

 

 

 

 

 

 

 

 

 

Height

 

9.5 +/-0.2 mm (0.374 +/-.008 inches)

 

 

 

 

 

 

 

 

Width

 

69.85 +/-0.25 mm (2.750 +/-0.010 inches)

 

 

 

 

 

 

 

Length

 

100.2 +/-0.25 mm (3.945 +/-0.010 inches)

 

 

 

 

 

 

 

Weight (typical)

100 grams (0.22 lb)

 

 

 

 

 

 

 

 

 

Average latency (msec)

5.6

 

 

 

 

 

 

 

 

 

 

Power-on to ready (sec typical)

3.5

 

 

 

 

 

 

 

 

 

 

Standby to ready (sec typical)

3.0

 

 

 

 

 

 

 

 

 

 

Startup current 5V (typical)

1.0 amps

 

 

 

 

 

 

 

 

 

Track-to-track seek time

1.0 (read), 1.5 (write)

 

 

 

(msec typical)

 

 

 

 

 

 

 

 

 

 

 

 

Average seek time (msec typical)

12.5

 

 

 

 

 

 

 

 

 

 

Average seek, read (msec typical)

12.5

 

 

 

 

 

 

 

 

 

 

 

Momentus 5400 FDE Product Manual, Rev. C

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Seagate ST9100826A, ST960814A, ST980821A, ST9120826A, ST940811A Drive specifications, Specification summary, Specifications
Page 10 Page 12

ST940811A, ST960814A, ST9120826A, ST980821A, ST9100826A specifications

Seagate's ST9100826A, ST980821A, ST9120826A, ST960814A, and ST940811A hard drives represent some of the company's commitment to providing reliable and high-performance storage solutions. Each model features distinct specifications and technologies that cater to various data storage needs.

The ST9100826A is a 100 GB hard drive that utilizes a 7200 RPM spindle speed, ensuring quick data access and transfer rates. With an IDE interface, this drive supports a data transfer rate of up to 100 MB/s, making it suitable for intensive applications. Additionally, the ST9100826A comes equipped with a 2 MB cache, optimizing data retrieval speeds and enhancing overall performance.

Moving to the ST980821A, this 80 GB drive also operates at 7200 RPM and features a similar IDE interface, which offers compatible integration with various systems. Designed with reliability in mind, it boasts a mean time between failures (MTBF) rating of 1 million hours, appealing to users who prioritize durability. This drive’s compact size allows it to fit seamlessly into a range of configurations, from personal computers to external enclosures.

The ST9120826A, with a substantial capacity of 120 GB, continues the trend of high-performance drives in this lineup. Its 7200 RPM speed and 2 MB cache ensure that users experience efficient data handling. With a more advanced read/write head technology, the drive also minimizes noise during operation, making it suitable for both desktop environments and home media centers.

The ST960814A comes with a 60 GB storage capacity and features an ultra-slim design, making it an excellent choice for portable devices. Often favored by users needing external storage for laptops or gaming consoles, this model maintains a 5400 RPM speed while providing commendable performance and durability, making data retrieval swift and smooth.

Lastly, the ST940811A, featuring a compact 40 GB capacity, serves as a versatile option for users looking to upgrade their existing systems. With an IDE connection and a design focused on energy efficiency, this drive is perfect for economical builds while still providing good performance for standard applications.

In summary, Seagate’s ST9100826A, ST980821A, ST9120826A, ST960814A, and ST940811A each demonstrate innovative features and reliability across various storage needs. With diverse capacities, spindle speeds, and robust technologies, they solidify Seagate’s reputation as a leader in data storage solutions.
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