This section summarizes the specific IDE power management requirements. Power management requirements for peripherals that use IDE are defined in the related device-class chapters in Part 4 of this guide.
18. Device supports ATA STANDBY command
Required
The IDE drive must implement the ATA STANDBY command according to the ATA standard to ensure that the drives are able to spin up properly after a STANDBY command. This command is defined in the ATA-2 specification and in SFF 8020i.
It is recommended that the hard disk drive spin-up and be able to complete a Read operation within 6 seconds of applying power and within 5 seconds of leaving ATA STANDBY mode and transitioning to ATA ACTIVE, as specified in the Storage Device Class Power Management Reference Specification, Version 1.0 or higher.
19. Bus and device meet PC 98 power management requirements
Required
The IDE channel must comply with the Storage Device Class Power Management Reference Specification, Version 1.0 or higher. Additional power management requirements are specified based on industry-defined standards for the bus used by the controller (such as PCI) and for the device. For more information, see the related chapter for the specific bus in Part 3 of this guide.