Seagate ST94811AB manual Power specifications

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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 7. 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.

•Operating power and current

Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each 10 reads) and 20 percent drive idle mode.

•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 mode.

Table 2:

DC power

 

 

 

 

 

Power dissipation (watts)

Average (watts, 25° C)

5V typ amps

 

 

 

 

Spinup

 

—

1.2

 

 

 

Idle, performance mode

2.50

0.5

 

 

 

Operating 40% r/w.

 

 

40% seek, 20% inop.

2.87

0.72

 

 

 

 

Seeking

 

2.4

0.48

 

 

 

 

Read

 

2.4

0.48

 

 

 

 

Write

 

2.4

0.48

 

 

 

 

Standby

 

0.36

0.07

 

 

 

 

Sleep

 

0.36

0.07

 

 

 

 

*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.

Momentus Blade Server Product Manual, Rev. B

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Contents ST94811AB Momentus Blade ServerPage Contents Momentus Blade Server Product Manual, Rev. B List of Figures Momentus Blade Server Product Manual, Rev. B Momentus disc drive IntroductionMomentus Blade Server Product Manual, Rev. B Specification summary Drive specificationsSpecifications Drive specification ST94811ABSpecifications LBA mode Default logical geometryFormatted capacity Physical organizationSeek time Physical characteristicsTime to ready Typical seek times msec Read WritePower specifications Conducted noise Typical current profileVoltage tolerance Environmental specifications Operating shock ShockNonoperating shock VibrationElectromagnetic immunity AcousticsDrive level acoustics Electromagnetic immunityMeasurement type Specification Safety certificationReliability Agency certificationAustralian C-Tick N176 Korean RRLFCC verification Momentus Blade Server Product Manual, Rev. B Handling and static discharge precautions Configuring and mounting the driveJumper settings Master/slave configurationCable-select option Drive mountingConnector signals ATA interface signals and connector pinsConnector Cable Signal Name Contact Conductor Cable Connector Conductor Contact Signal NameSupported commands Supported ATA commandsCommand name Command code in hex ATA-standard commands ATA-standard power-management commands Command name Command code in hexATA-standard security commands Word Description Value Identify Device commandXx07H Bit Word Description if bit is set to Bit WordFeatures register values Set Features commandSupported S.M.A.R.T. commands 4 S.M.A.R.T. commandsCode in features register A.R.T. command Internet Seagate Technology support servicesPresales Support Technical SupportData Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Numerics IndexPage TMR Momentus Blade Server Product Manual, Rev. B Page Seagate Technology LLC

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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