User's Manual

142 Controllers
• Customized Power Savings Mode—provides the option for you to
customize the power savings settings. The default values are populated
when you select this power mode. You can select or deselect the features
you want to enable. To enable the
Quality of Service (QoS) feature, select
the
Customized Power Savings Mode and then select Enable for the Spin
Down Configured Drives
option. You can use the Quality of Service
(QoS)
to customize power saving on configured drives by setting the Start
Time
and Time interval to spin up.
The following table displays the properties in the Manage Physical Disk
Power option:
Table 8-8. Manage Physical Disk Power Properties
Property Definition
Spin Down
Unconfigured Drives
The Enabled option spins down the unconfigured disks if
they are unattended for a specified interval of time.
Spin Down Hot
Spares
The Enabled option spins down the hot spares if no
read-write operation takes place on the hot spare in a
specified interval of time.
Spin Down
Configured Drives
The Enabled option spins down the configured disks if they
are unattended for a specified interval of time.
Automatic Disk
Power Saving (Idle C)
This property enables or disables the Dell Auto Idle C feature
for additional power saving. When enabled, it will not affect
legacy drives but, will enable new generation drives to
perform partial RPM (Idle C) during idle period for
additional power savings.
Time Interval for
Spin Down
This property sets the time interval after which the hot spares
and unconfigured drives spins down.
Quality Of Service (QOS)
Enable Quality Of
Service Settings
Select this check box to set the start time and the time
interval for spin up.activity at the virtual disk level.
NOTE: This option is available only if the Spin Down Configured
Drives option is selected.
Start Time
(HH:MM)
The start time of the battery learn cycle. This option is
enabled only if the Enable Quality Of Service Settings check
box is selected.