LicenseKey, DeleteLicenseKey

These options enable you to enter a 25-character license key to activate or uninstall some controller features. Hyphens can be entered, but are not required.

MNPDelay

The MNPDelay option controls the behavior of the controller Monitor and Performance Analysis Delay and is expressed in values ranging from 0 to 60. This option is primarily used to tune controller performance for video applications and requires the installation of a valid license key.

NoBatteryWriteCache

With this option, the controller can enable write cache when no battery is present or when the battery fails. Values are Enable or Disable. The default is Disable.

Some controllers do not support this option.

Power modes

IMPORTANT: A reboot may be required after switching power modes in order to optimize savings and performance.

IMPORTANT: When the power mode is set to Balanced, future controller configuration changes may require a reboot for optimal performance.

This option modifies the controller power mode.

•A value of minpower sets static settings to the lowest possible value and dynamically reduces power based on the workload.

•A value of balanced sets statistic settings based on the configuration and dynamically reduces power based on the workload (recommended).

•A value of maxperformance sets static settings to the highest possible value and does not dynamically reduce power (default).

Example: PowerMode= [ MinPower Balanced MaxPerformance ]

PreferredPathMode

The setting that you select for this option determines how the preferred I/O path to a particular logical drive is set for a redundant array controller that is in an active/active configuration.

Not all controllers support this feature, and controllers in an active/standby configuration disregard this option.

•Auto is the default setting for new configurations. In this case, the storage system automatically selects the I/O path from the redundant controller to the logical drive and dynamically load balances all paths.

•Manual enables you to assign the logical drive to a specific redundant controller. If you select this setting, use the PreferredPath (on page 96) command to specify the path.

If you are reconfiguring a controller and do not specify a setting for this option, the existing setting remains unchanged.

Operations 90