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 ST94811AB model drives.

2.1Specification summary

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:

Specifications

 

 

 

Drive specification

ST94811AB

 

 

Formatted Gbytes (512 bytes/sector)

40

 

 

Guaranteed sectors

78,140,160

 

 

Bytes per sector

512

 

 

Physical read/write heads

2

 

 

 

Discs

 

1

 

 

Cache (Mbytes)

2

 

 

Recording density, BPI (bits/inch max)

642,000

 

 

Track density, TPI (tracks/inch max)

100,780

 

 

Areal density (Mbits/inch2 max)

65

Spindle speed (RPM)

5,400

 

 

Internal data transfer rate OD (Mbytes/sec max)

48.25

 

 

Sustained data transfer rate OD (Mbytes/sec)

34.5

 

 

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

100

 

 

ATA data transfer modes supported

PIO modes 0–4; Multiword DMA modes 0–2; Ultra DMA modes 0–5

 

 

 

Height

 

9.5 +/–0.2 mm (0.374 +/–.0078 inches)

 

 

 

Width

 

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

 

 

 

Length

 

100.2 +/–0.25 mm (3.945 +/–0.0098 inches)

 

 

Weight (typical)

99 grams (0.218 lb.)

 

 

Average latency (msec)

5.6

 

 

Power-on to ready (sec typical)

3.9

 

 

Standby to ready (sec typical)

2.6 sec

 

 

Startup current 5V (peak)

1.2 amps

 

 

Track-to-track seek time (msec typical)

1.5 (read), 2.0 (write)

 

 

Average seek time (msec typical)

12.0

 

 

Average seek, read (msec typical)

12.0

 

 

Average seek, write (msec typical)

14.0

 

 

 

Momentus Blade Server Product Manual, Rev. B

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Seagate manual Drive specifications, Specification summary, Specifications, Drive specification ST94811AB
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ST94811AB specifications

The Seagate ST94811AB is a highly regarded hard disk drive that has made its mark in the world of data storage solutions. With a capacity of 80 GB, this drive was designed to meet the growing demands for reliable and efficient data storage in both personal and professional settings.

One of the main features of the ST94811AB is its 2.5-inch form factor, which makes it ideal for use in laptops, portable devices, and compact desktop systems. This size allows for easy integration into various applications while maintaining a balance between portability and performance. The drive operates at 5400 RPM, providing a solid performance level that is adequate for a wide range of tasks, including data backup, file storage, and even light gaming.

In terms of connectivity, the Seagate ST94811AB utilizes the SATA interface, which is standard for modern hard drives. This interface supports high-speed data transfer rates, ensuring efficient and quick access to stored files. The SATA connection enhances the overall responsiveness of the drive, making it a suitable choice for users who prioritize speed and reliability.

When it comes to durability, this drive was built with robustness in mind. The ST94811AB features Seagate's proprietary technologies that aim to extend the lifespan of the drive while providing protection against data loss. This includes advanced error correction mechanisms and shock resistance, which are crucial for maintaining data integrity, especially in portable devices that may be subjected to bumps and vibrations.

Another significant characteristic of the ST94811AB is its low power consumption. This feature is particularly beneficial for laptop users, as it contributes to longer battery life without sacrificing performance. The drive's efficient design helps to reduce heat generation, which in turn enhances the longevity of both the drive and the device it's installed in.

Overall, the Seagate ST94811AB stands out as a reliable and efficient hard drive solution. Its blend of performance, durability, and energy efficiency makes it a sought-after choice among users looking for dependable data storage. Whether for everyday use or specific applications that require compact form factors, the ST94811AB delivers a balanced performance suitable for various data management needs.
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