Power modes

There are three available power modes:

• Maximum performance
• Minimum power
• Balanced

Maximum performance (default)

This is the default setting. All settings are selected based on maximum performance. Power savings options that affect performance are disabled.

Balanced

You can use this setting to save power with minimal effects on performance. For large queue depths, this setting affects throughput by 10% or less.

At lower queue depths or infrequent I/O, impacts on performance may be greater. This command is typically useful in environments using only hard drives, and is not recommended when using SSDs.

Settings are based on the user configuration, such as the number or types of drives, the RAID level, and storage topology. Significant changes to the configuration may require a reboot for optimal setting selection. If a reboot is required to change settings, HPE SSA generates a warning.

Minimum power

When settings are selected without regard to system performance, maximum power savings is achieved. Hewlett Packard Enterprise recommends this setting for specific applications, but it is not appropriate for most customers. Most applications will suffer significant performance reduction.