Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 197)

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WEB BROWSER-BASED CONFIGURATION
6.9.3.2 Time To Hdd Low Power Idle
This option delivers lower power consumption by automatically
unloading recording heads during the setting idle time. The val-
ues can be selected “Disabled” or within the range 2 to 7 min-
utes.
6.9.3.3 Time To Hdd Low RPM Mode
This function can automatically spin disks at lower RPM if there
have not been used during the setting idle time. The values can
be selected “Disabled” or within the range 10 to 60 minutes.
6.9.3.4 Time To Spin Down Idle HDD
This function can automatically spin down the drive if it hasn’t
been accessed for a certain amount of time. This value is used
by the drive to determine how long to wait (with no disk activity,
before turning off the spindle motor to save power). The values
can be selected “Disabled” or within the range 1 to 60 minutes.
6.9.3.5 SATA Power Up In Standby
SATA Power Up In Standby (power management 2 mode, PM2)
is a SATA disk drive configuration which prevents the drive from
automatic spinup when power is applied. “Enabled” option allows
the drive to be powered-up into the Standby power manage-
ment state to minimize inrush current at power-up and to allow
the controller to sequence the spinup of devices. It is mainly
for server/workstation environments operating in multiple-drive
configurations.
6.9.3.6 Delay for Phy to Stable
This function is used to increases the availability of the HDD
unpredictable behavior. Delay timing can be set from 10 to 50
seconds, indicating the time that the controller waits, from the
startup of the system until the hard drive is being detected. The
default is Disabled.