Seagate ST9160827AS manual Power-management modes, Power management modes, Active mode, Idle mode

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2.9.5Power-management modes

The drive provides programmable power management to provide greater energy efficiency. In most systems, you can control power management through the system setup program. The drive features the following power-management modes:

Table 4:

Power management modes

 

 

 

 

 

 

Power modes

Heads

Spindle

Buffer

 

 

 

 

Active (operating)

Tracking

Rotating

Full power

 

 

 

 

Idle, performance

Tracking

Rotating

Low power

 

 

 

 

 

Idle, active

 

Bias against crash stops

Rotating

Self refresh—low power

 

 

 

 

Idle, low power

Parked

Rotating

Self refresh—low power

 

 

 

 

 

Standby

 

Parked

Stopped

Self refresh—low power

 

 

 

 

 

Sleep

 

Parked

Stopped

Self refresh—low power

 

 

 

 

 

•Active mode

The drive is in Active mode during the read/write and seek operations.

•Idle mode

The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc access is necessary.

•Standby mode

The drive enters Standby mode when the host sends a Standby Immediate command. If the host has set the standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for a specifiable length of time. The standby timer delay is established using a Standby or Idle command. In Standby mode, the drive buffer is in Self Refresh Low Power mode, the heads are parked and the spindle is at rest. The drive accepts all commands and returns to Active mode any time disc access is necessary.

•Sleep mode

The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive buffer is in Self Refresh Low Power mode, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it receives a Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and enters Standby mode with all current translation parameters intact.

•Idle and Standby timers

Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and begins counting down from its specified delay times to zero. If the standby timer reaches zero before any drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the drive accepts all commands and returns to Active mode when disc access is necessary.

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Momentus 5400.4 SATA Product Manual, Rev. A

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Contents Momentus 5400.4 Sata ST9250827AS ST9200827AS ST9160827AS ST9120817ASRevision history Rev. a 10/23/07 Initial releaseRevision Date Comments Momentus 5400.4 Sata Product Manual, Rev. a Momentus 5400.4 Sata Product Manual, Rev. a Contents Momentus 5400.4 Sata Product Manual, Rev. a List of Figures Page Introduction About the Serial ATA interface Drive specifications Specification summary tableSleep mode Formatted capacity Default logical geometryLBA mode Cylinders Read/write heads Sectors per track 16,383Physical organization Physical characteristicsDrive specification Recording and interface technologyTypical seek times Seek timeStart/stop times Typical seek times msec Read WritePower specifications Conducted noise Typical current profileDeferred spinup Voltage toleranceActive mode Power-management modesPower management modes Idle modeEnvironmental specifications Nonoperating shock ShockOperating shock VibrationDrive level acoustics Acoustic emissionElectromagnetic immunity Test for Prominent Discrete Tones PDTsReliability Safety certificationMeasurement type Specification Agency certificationKorean RRL Australian C-Tick N176FCC verification Environmental protection Corrosive environmentEuropean Union Restriction of Hazardous Substances RoHS Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingMomentus 5400.4 Sata Product Manual, Rev. a Serial ATA Sata interface Serial ATA connector pin definitionsSignal Segment Pin Function DefinitionPin Function Definition P10 Ground 2nd mate P11 ReservedSupported ATA commands Command name Command code in hex ATA-standard commandsCommand name Command code in hex ATA-standard security commandsMomentus 5400.4 Sata Product Manual, Rev. a Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordSet Features command Set Features command values3 S.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command Presales Support Seagate Technology support servicesInternet Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index ITE Sata Momentus 5400.4 Sata Product Manual, Rev. a Page Seagate Technology LLC

ST9120817AS, ST9160827AS, ST9200827AS, ST9250827AS specifications

The Seagate ST9250827AS, ST9200827AS, ST9160827AS, and ST9120817AS are notable hard drives that have made their mark in the storage industry, primarily due to their reliable performance, capacity options, and advanced technologies. Each model is tailored to meet the needs of different user scenarios, making them versatile choices for both personal and enterprise applications.

The ST9250827AS, with a capacity of 250GB, is designed for users requiring sufficient storage for general applications. Ideal for laptops and external drives, it offers a 5400 RPM spindle speed, ensuring quick access times and efficient data retrieval. The drive also incorporates Seagate’s Advanced Power Management technology, which helps extend battery life in portable devices by optimizing power consumption.

The ST9200827AS steps up with a 320GB capacity, catering to users needing increased storage for larger files, applications, and media collections. With similar 5400 RPM performance, it balances speed and energy efficiency. This model is suitable for those looking to enhance their mobile experience without sacrificing performance.

The ST9160827AS, a 160GB variant, is a compact solution for users needing a smaller footprint. It retains the energy efficiency and power management features present in the other models while delivering adequate performance for everyday computing tasks. This model is particularly suited for older machines or as a secondary drive in systems where space is at a premium.

Lastly, the ST9120817AS, with its 120GB capacity, is the smallest of the lot, perfect for basic storage needs. It’s well-suited for entry-level laptops or as a backup option for essential data. While its capacity may be limited compared to the others, it maintains the same reliability and efficiency attributed to Seagate’s technology.

All four models utilize Seagate's Drive Trust Technology, ensuring data integrity and security. They are built using Seagate's hard drive technologies that emphasize durability and reliability. These drives are also equipped with a SATA interface, facilitating fast data transfer rates and seamless integration with a wide range of computing devices.

In summary, the Seagate ST9250827AS, ST9200827AS, ST9160827AS, and ST9120817AS hard drives provide varying capacities and consistent performance, catering to diverse user requirements. Their blend of energy-efficient operation, advanced technology, and dependable storage solutions make them suitable for both personal and professional use, ensuring reliable data management across all applications.
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