Users Guide

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.

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

Related concepts

Properties In Manage Physical Disk Power Option

Physical Disk Power On Unconfigured Drives And Hot Spares

Managing Physical Disk Power Using The Customized Power Savings Mode

Managing Physical Disk Power Using The QoS Option

Managing The Time Interval For The QoS 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 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) 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.

Related concepts

Managing The Physical Disk Power

Controllers