Seagate 7200.8 PATA, ST3250623A manual 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.

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Barracuda 7200.8 PATA Product Manual, Rev. F

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Contents Barracuda 7200.8 Pata Page Contents Barracuda 7200.8 Pata Product Manual, Rev. F List of Figures Barracuda 7200.8 Pata Product Manual, Rev. F Introduction Barracuda 7200.8 PataBarracuda 7200.8 Pata Product Manual, Rev. F Drive specifications Specification summary tableDrive specifications for 400 Gbyte models Drive specification ST3400832A ST3400632ABarracuda 7200.8 Pata Product Manual, Rev. F Drive specifications for 300 Gbyte models Drive specification ST3300831A ST3300631AFollowing web Drive specifications for 250 and 200 Gbyte models Drive specification ST3250823A ST3250623A ST3200826ABarracuda 7200.8 Pata Product Manual, Rev. F Default logical geometry LBA modeFormatted capacity Recording and interface technologyStart/stop times Physical characteristicsSeek time Power specifications Voltage tolerance Typical current profileConducted noise Power-management modes Active modeIdle mode Sleep modeEnvironmental specifications Shock Operating shockNonoperating shock VibrationAcoustics Electromagnetic immunityFluid Dynamic Bearing FDB motor acoustics Radio frequency environmentsSafety certification ReliabilityAgency certification Electromagnetic compatibilityAustralian C-Tick N176 FCC verificationEuropean Union Restriction of Hazardous Substances RoHS Environmental protectionCorrosive environment Configuring and mounting the drive Handling and static discharge precautionsBreather filter hole precautions Breather filter hole locationJumper settings Master/slave configurationDrive as master with a non-ATA-compatible slave Cable-select optionDrive mounting Ultra ATA/100 cableMounting dimensions-top, side and end view Barracuda 7200.8 Pata Product Manual, Rev. F ATA interface signals and connector pins ATA interfaceSupported ATA commands Command name Command code in hexF4H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Set Features command 4 S.M.A.R.T. commandsCode in features Register A.R.T. command Seagate Technology support services InternetPresales Support Technical SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index Page TMR Barracuda 7200.8 Pata Product Manual, Rev. F Page Seagate Technology LLC
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