Users Guide

Table Of Contents
Managing The Physical Disk Power
Does my controller support this feature? See Supported Features.
The Manage Physical Disk Power task allows you to manage the power consumed by the physical disks.
NOTE: The Manage Physical Disk Power task is provided with H330 cards by spinning down the hot spares and
unconfigured disks. PERC H730P, H730, cards also support the Manage Physical Disk Power task with additional power-
saving modes, Spin Down Configured Drives, and Automatic Disk Power Saving (Idle C) options.
NOTE: This task is not supported on PERC hardware controllers running in HBA mode and PERC H755N hardware
controller.
You can enable one of the following modes to manage the power consumed:
No Power Savings Mode This is the default mode for the controller. In this mode, all power-saving features are
disabled.
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 19. 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.
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