MEMS-based storage devices should be energy ecient for deployment
in mobile systems. Since MEMS-based storage devices have a moving me-
dia sled, they should be shut down during periods of inactivity. However,
shutdown costs energy, limiting the applicability of aggressive shutdown
The media sled in MEMS-based storage devices is suspended by springs.
We introduce a policy that exploits the spring structure to reduce the shut-
down energy. As a result, the aggressiveness of the shutdown decisions
can be increased, reducing the energy consumption. This report devises
analytical models of the shutdown time and energy of this policy.
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