Seagate ST9120826A manual Power-management modes, Power management modes, Active mode, Idle mode

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2.9.4Power-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 3:

Power management modes

 

 

 

 

 

 

 

Power modes

Heads

 

Spindle

Buffer

 

 

 

 

 

Active (operating)

Tracking

 

Rotating

Full power

 

 

 

 

 

Idle, performance

Tracking

 

Rotating

Self refresh—low power

 

 

 

 

 

 

Idle, active

 

Floating

 

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 in performance mode, 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 FDE Product Manual, Rev. C

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Contents Momentus5400 FDE ST9120826A ST9100826A ST980821A ST960814A ST940811APage Contents Seagate Technology support services ATA interfaceCompatibility summary List of Figures Momentus 5400 FDE Product Manual, Rev. C Introduction System requirementsBenefits Feature listAbout Momentus 5400 FDE disc drives Drive state upon shipmentPage Momentus 5400 FDE Product Manual, Rev. C Drive specifications Specification summarySpecifications Specifications Formatted capacity Default logical geometryLBA mode Physical organizationPhysical characteristics Technology SpecificationRecording and interface technology Typical seek times msec Read Write Seek timeTime to ready Time to ready Typical Max @ 25CPower specifications Typical current profile Conducted noiseVoltage tolerance Active mode Power-management modesPower management modes Idle modeEnvironmental specifications Acoustics Electromagnetic immunity Electromagnetic immunityPerformance Reference Test Description Level Standard Reliability 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 precautionsDrive mounting Jumper settingsMaster/slave configuration Cable-select optionMounting dimensions-top, side and end view Drive integration Momentus 5400 FDE drive label exampleSecurity Thaw command Security Erase--ATA security commandsDrive installation Security Erase procedureDrive State after security erase Connector Cable Signal Name Contact Conductor ATA interface signals and connector pinsConnector signals Cable Connector Conductor Contact Signal NameInterrupts Disabled mode nIEN bit ATA interface specificationsLegacy mode -- Multi-word DMA not supported PIO Read -- Interrupts Enabled modeDevice 0 only configurations ATA Security policy exceptionsWord Content ATA Security Erase Unit bitsAdditional technical notes Drive Trust Mode supported Drive Trust IdentifyIdent Value BIT set Bit Description Full Disc Encryption support Full-disc Encryption IdentifySupported ATA commands Supported commandsNormal Commands Read Multiple EXT SET MAX Unlock Aborted Aborted ExecutableIdentify Device command Word Description ValueXx00H Description if bit is set to Bit Word Bit WordSet Features command Features register valuesInstallation considerations Compatibility summarySystem Compatibility Bios versions testedTested Bios versions Tested systemsSoftware utilities Compatibility test configurationsOperating system versions tested Operating systems testedThird party software support Presales Support Seagate Technology support servicesInternet Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index NumericsPage Page Momentus 5400 FDE Product Manual, Rev. C Page Seagate Technology LLC

ST940811A, ST960814A, ST9120826A, ST980821A, ST9100826A specifications

Seagate's ST9100826A, ST980821A, ST9120826A, ST960814A, and ST940811A hard drives represent some of the company's commitment to providing reliable and high-performance storage solutions. Each model features distinct specifications and technologies that cater to various data storage needs.

The ST9100826A is a 100 GB hard drive that utilizes a 7200 RPM spindle speed, ensuring quick data access and transfer rates. With an IDE interface, this drive supports a data transfer rate of up to 100 MB/s, making it suitable for intensive applications. Additionally, the ST9100826A comes equipped with a 2 MB cache, optimizing data retrieval speeds and enhancing overall performance.

Moving to the ST980821A, this 80 GB drive also operates at 7200 RPM and features a similar IDE interface, which offers compatible integration with various systems. Designed with reliability in mind, it boasts a mean time between failures (MTBF) rating of 1 million hours, appealing to users who prioritize durability. This drive’s compact size allows it to fit seamlessly into a range of configurations, from personal computers to external enclosures.

The ST9120826A, with a substantial capacity of 120 GB, continues the trend of high-performance drives in this lineup. Its 7200 RPM speed and 2 MB cache ensure that users experience efficient data handling. With a more advanced read/write head technology, the drive also minimizes noise during operation, making it suitable for both desktop environments and home media centers.

The ST960814A comes with a 60 GB storage capacity and features an ultra-slim design, making it an excellent choice for portable devices. Often favored by users needing external storage for laptops or gaming consoles, this model maintains a 5400 RPM speed while providing commendable performance and durability, making data retrieval swift and smooth.

Lastly, the ST940811A, featuring a compact 40 GB capacity, serves as a versatile option for users looking to upgrade their existing systems. With an IDE connection and a design focused on energy efficiency, this drive is perfect for economical builds while still providing good performance for standard applications.

In summary, Seagate’s ST9100826A, ST980821A, ST9120826A, ST960814A, and ST940811A each demonstrate innovative features and reliability across various storage needs. With diverse capacities, spindle speeds, and robust technologies, they solidify Seagate’s reputation as a leader in data storage solutions.
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