2.9Power specifications

The drive receives DC power (+5V) through a native SATA power connector.

2.9.1Power consumption

Power requirements for the drives are listed in the table on page 8. Typical power measurements are based on an average of drives tested, under nominal conditions, at 25°C ambient temperature.

Spinup power

Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.

Seek mode

During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and does not execute a read or write operation. Servo electronics are active. Seek mode power is measured based on three random seek operations every 100 msecs. This mode is not typical.

Read/write power and current

Read/write power is measured with the heads on track, based on three 63 sector read or write operations every 100 msecs.

Idle mode power

Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.

Standby mode

During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/ write electronics are in power-down model

Table 3:

DC power

 

 

 

Power dissipation

+5V input average (25° C)

 

 

Spinup (typical)

1.0 amps

 

 

 

Seek

 

2.0 watts

 

 

 

Read

 

1.9 watts

 

 

 

Write

 

1.8 watts

 

 

Idle, performance*

1.4 watts

 

 

 

Idle, active*

 

0.75 watts

 

 

Idle, low power mode*

0.6 watts

 

 

 

Standby

 

0.2 watts

 

 

 

Sleep

 

0.2 watts

 

 

 

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.

8

Momentus 5400.3 SATA Product Manual, Rev. D

Page 14
Image 14
Seagate ST940814AS, ST980811AS, ST960813AS, ST9160821AS, ST9120822AS, ST9100828AS manual Power specifications

ST960813AS, ST9100828AS, ST9160821AS, ST9120822AS, ST980811AS specifications

The Seagate hard drives ST9120822AS, ST960813AS, ST980811AS, ST9100828AS, and ST940814AS represent a solid lineup of storage solutions designed primarily for personal computers and external storage applications. Each of these models showcases a blend of performance, reliability, and innovative technology that caters to a variety of user needs.

The ST9120822AS is a 120GB SATA drive known for its advanced data storage capabilities and a 7200 RPM spindle speed, delivering quick access times and enhanced performance for everyday computing tasks. Its Native Command Queuing (NCQ) technology optimizes the order of read and write commands sent to the drive, which significantly boosts performance, especially in multi-tasking environments. The drive is also equipped with an 8MB cache buffer that assists in speeding up data retrieval processes.

Moving up in capacity, the ST960813AS offers 60GB of storage, featuring the same 7200 RPM performance as its smaller sibling. It also benefits from NCQ technology, making it suitable for more demanding applications. This drive excels in scenarios where fast data access is essential, such as gaming and multimedia applications.

The ST980811AS provides 80GB of storage capacity. It shares many core features with its counterparts, including a 7200 RPM spindle speed and an 8MB cache that enhances data throughput. The reliability factor is paramount in these drives, as they come with built-in features designed to minimize data loss, such as error correction codes and advanced formatting technology.

The ST9100828AS boasts an impressive 100GB of capacity, providing ample space for storing large files, applications, and multimedia content. It combines high performance with enhanced reliability, ideal for users who require a dependable storage solution for their important data.

Finally, the ST940814AS offers a 40GB size capability. Despite its smaller storage size, it maintains high performance levels with a 7200 RPM speed and 8MB cache, making it a viable option for those looking for a balance between efficiency and space.

In summary, the Seagate ST9120822AS, ST960813AS, ST980811AS, ST9100828AS, and ST940814AS models encapsulate the essence of dependable storage with their various capacities and robust performance features. These drives reflect a commitment to quality and innovation, ensuring users can rely on them for their data storage and access needs in both personal and professional environments.