Users Guide

Table Of Contents
Balanced Power Savings Mode Provides good power savings while limiting I/O latency.
Maximum Power Savings Mode Provides maximum power savings for all drives.
Customized Power Savings Mode Allows you to customize the power-saving settings. The default values are
populated when you select this power mode. You can select or clear the features you want to enable. You can select
Quality of Service (QoS) to customize power saving on configured drives by setting the Start Time and Time interval to
spin up.
To enable the Quality of Service (QoS) feature:
1. Select Customized Power Savings Mode.
2. Select Enable for the Spin Down Configured Drives option
Properties In Manage Physical Disk Power Option
The following table displays the properties in the Manage Physical Disk Power option:
Table 16. 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
readwrite 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) Enables or disables the Automatic Disk Power Saving
(Idle C) feature for additional power saving. When enabled,
it enables the new generation power savings without affecting
the legacy drives.
Time Interval for Spin Down Sets the time interval after which the hot spares and
unconfigured drives spins down.
Quality Of Service (QOS)
Enable Quality Of Service Settings Select 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) Displays the start time of the battery learn cycle. This option
is enabled only if Enable Quality Of Service Settings is
selected.
Time Interval for Spin Up (in Hours) Displays the spin up time interval for the battery learn cycle.
The time interval can range from 1-24 hours.
Physical Disk Power On Unconfigured Drives And Hot Spares
1. Select Enabled for the Spin Down Unconfigured Drives and Spin Down Hot Spares options.
2. Click Apply Changes. To exit and cancel your changes, click Go Back to Previous Page.
Managing Physical Disk Power Using The Customized Power Savings Mode
To manage physical disk power through the Customized Power Savings Mode:
1. Select the Customized Power Save Mode option.
2. Edit the remaining parameters on the Manage Physical Disk Power page. You can also configure the options in the QoS
section as described in the following section.
Controllers
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