HDD Power Down
Possible values of an option:
[From 1 Min to 15 Min], [Disabled]
The option description:
At usage APM sets time of absence of activity after which the hard disk will be out-of-operation by means BIOS. The best variant will install for this option value [Disabled] — if needed you can always specify time before hard disk switch-off in an operating system.
Basically, at idle time it is better to refuse hard disk shut-down generally since it reduces a resource of the given device. But, for the sake of justice, it is necessary to note that the modern hard disks are projected already counting on power saving up modes, and, as consequence, they are not so sensitive to switch-off at idle time.
Other options identical to destination: