2.9Power specifications

The drive receives DC power (+5V) through the interface 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, using 5.0V input voltage 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 2:

DC power

 

 

 

Power dissipation

+5V average (watts, 25° C)

 

 

Spinup (typical)

1.00 amps

 

 

Idle, performance mode*

1.85

 

 

 

Idle, active*

 

0.99

 

 

Idle, low power mode*

0.85

 

 

 

Seeking

 

2.3

 

 

 

Read

 

2.05

 

 

 

Write

 

2.1

 

 

 

Standby

 

0.20

 

 

 

Sleep

 

0.20

 

 

 

*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 5400.2 Blade Server Product Manual, Rev. B

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Seagate ST9408114AB, ST9808211AB, ST960822AB, ST9100823AB manual Power specifications
Page 13 Page 15

ST9808211AB, ST9100823AB, ST9408114AB, ST960822AB specifications

The Seagate ST960822AB, ST9408114AB, ST9100823AB, and ST9808211AB are notable hard disk drives (HDDs) that have made significant contributions to data storage technology. These drives are part of Seagate's extensive lineup, known for their reliability, performance, and innovative features.

The ST960822AB is a 2.5-inch HDD with a storage capacity of 60 GB. It is designed primarily for mobile computing applications, such as laptops and external drives. This model features a low power consumption design that enhances battery life, making it an ideal choice for portable devices. Its data transfer rates are competitive for its class, ensuring fast access to files.

Next, the ST9408114AB presents a slightly higher capacity of 40 GB, also within the 2.5-inch form factor. This drive was engineered for entry-level laptops and external storage solutions. Its Fluid Dynamic Bearing (FDB) technology allows for quieter operation and reduced vibration. With a 5400 RPM speed, it provides adequate performance for everyday tasks, including document storage and multimedia playback.

The ST9100823AB steps into the spotlight with a capacity of 80 GB, catering to users requiring more storage space for games, documents, and multimedia files. This HDD offers enhanced data integrity through Seagate's Advanced Power Management technology, which reduces power consumption without sacrificing performance. The ST9100823AB's consistent performance makes it suitable for both personal and professional use.

Lastly, there is the ST9808211AB, offering 80 GB of storage in a 2.5-inch format. It leverages similar technology as its counterparts but with improved data caching algorithms that allow for quicker access to frequently used files. This HDD is also built with durability in mind, suitable for environments that may experience shocks or vibrations.

All four models incorporate Seagate's commitment to quality with a focus on reliability and efficiency. They are equipped with features that prioritize speed, noise reduction, and power efficiency, making them excellent choices for varied applications in personal computing, gaming, and mobile storage. Collectively, the ST960822AB, ST9408114AB, ST9100823AB, and ST9808211AB represent a significant advancement in hard drive technology, serving users with diverse storage needs effectively.
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