User's Manual

Operations 90
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.