Seagate ST3802110ACE, ST3120213ACE Power-management modes, Active mode, Idle mode, Sleep mode

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2.8.4Power-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:

Power mode	Heads	Spindle	Buffer

Active	Tracking	Rotating	Enabled

Idle	Tracking	Rotating	Enabled

Standby	Parked	Stopped	Enabled

Sleep	Parked	Stopped	Disabled

•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 enabled, 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 disabled, 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.

DB35 Series 7200.2 Product Manual, Rev. C

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Contents DB35 Series Revision status summary sheet Contents DB35 Series 7200.2 Product Manual, Rev. C List of Figures DB35 Series 7200.2 Product Manual, Rev. C Introduction DB35 Series 7200.2 Product Manual, Rev. C Specification summary table Drive specificationsDrive specification ST3500841ACE ST3400833ACE Drive specifications for 500 and 400 Gbyte modelsFollowing web Drive specification ST3300822ACE ST3250824ACE ST3200827ACE Drive specifications for 300, 250, and 200 Gbyte modelsDB35 Series 7200.2 Product Manual, Rev. C Drive specification ST3160212ACE ST3120213ACE ST3802110ACE Drive specifications for 160, 120, and 80 Gbyte modelsAccess the following web LBA mode Default logical geometryFormatted capacity Recording and interface technologyDB35 Series 7200.2 Product Manual, Rev. C Physical characteristics Seek timeStart/stop times Power specifications Typical current profile Conducted noiseVoltage tolerance Active mode Power-management modesIdle mode Sleep modeEnvironmental specifications Nonoperating shock AcousticsVibration Operating vibrationElectromagnetic immunity ReliabilityRadio frequency environments Agency certification Safety certificationElectromagnetic compatibility Korean RRLEnvironmental protection FCC verificationEuropean Union Restriction of Hazardous Substances RoHS Corrosive environment DB35 Series 7200.2 Product Manual, Rev. C Handling and static discharge precautions Configuring and mounting the driveBreather filter hole location Breather filter hole precautionsMaster/slave configuration Jumper settingsDrive as master with a non-ATA-compatible slave Cable-select optionUltra ATA/100 cable Drive mountingMounting dimensions-top, side and end view DB35 Series 7200.2 Product Manual, Rev. C ATA interface ATA interface signals and connector pinsCommand name Command code in hex Supported ATA commandsF6H Write Sectors Without Retries 31H Write Sectors Extended 34H Word Description Value Identify Device commandXx07H Description if bit is set to Bit Word 0CH Set Features commandCode in features Register A.R.T. command 4 S.M.A.R.T. commandsDB35 Series 7200.2 Product Manual, Rev. C Warranty Service Seagate Technology support servicesInternet MySeagate Spp.seagate.com Presales SupportData Recovery Services Data Recovery Services Authorized Service CentersFAX services-All Europe toll call Call center Presales and Technical Support Warranty ServiceToll-free support numbers Asia/Pacific support services Publication feedback survey DB35 Series 7200.2 Product Manual, Rev. C Numerics IndexPage Page DB35 Series 7200.2 Product Manual, Rev. C Page Seagate Technology LLC

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