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Windows 7: Advanced Power Settings - Multiple Hard Drives

02 Jan 2011   #1

Win 7
 
 
Advanced Power Settings - Controlling Multiple Hard Drives

Could you guys explain how Windows 7 Power Management works with multiple hard drives?

Win 7 advanced Power Settings offer only one option for a single hard disk - Turn Off after N min. What happens, if system has multiple hard disks, including internal and USB attached? Does this "inactivity time" setting apply to each disk separately?

Regarding internal drives:

Are internal HDs power controlled independently by Win 7 - how it shows up? Will some of them spin off or be stopped after a set time passed from last query to the drive - from what kind of programs?

How Win 7 power features depend on particular disk controllers' power features? Can a disk controller stop the disk spinning on inactivity without Win 7 control?

Does OS or other programs query or write to ALL drives periodically without user interaction, not only to a system drive?

How to speed up access to one non-system drive at any time, while allowing Win 7 to normally control power to other drives? How to customize power control of different drives?

Regarding USB Drives:

Would activating USB Selective Suspend setting be equal to controlling USB drives power by Win 7 similar to internal SATA & IDE drives?

How exactly this setting works with external USB hard drives? How it depends on USB Enclosure chipset power features?

How it works with USB Flash drives and cards?

Why information about this topic is so scarce from MS? Any extra links to deepen knowledge of the topic? Any in-depth presentations & overviews of Win 7 device power management?

My System SpecsSystem Spec
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 Advanced Power Settings - Multiple Hard Drives




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