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Tunes options for SCSI hosts.
The plug-in sets Aggressive Link Power Management (ALPM) to the value specified
by the [option]`alpm` option. The option takes one of four values:
`min_power`, `med_power_with_dipm`, `medium_power` and `max_performance`.
NOTE: ALPM is only available on SATA controllers that use the Advanced
Host Controller Interface (AHCI).
.ALPM setting when extended periods of idle time are expected
====
----
[scsi_host]
alpm=med_power_with_dipm
----
====
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