Users Guide

Assign hot spare
<Option>=no
Unassign hot spare
Managing controllers
You can perform the following for controllers:
● Configure controller properties
● Import or auto import foreign configuration
● Clear foreign configuration
● Reset controller configuration
● Create, change, or delete security keys
Related concepts
Configuring controller properties on page 204
Importing or auto importing foreign configuration on page 206
Clearing foreign configuration on page 208
Resetting controller configuration on page 208
Supported controllers on page 192
Summary of supported features for storage devices on page 193
Converting a physical disk to RAID or non-RAID mode on page 197
Configuring controller properties
You can configure the following properties for the controller:
● Patrol read mode (auto or manual)
● Start or stop patrol read if patrol read mode is manual
● Patrol read unconfigured areas
● Check consistency mode
● Copyback mode
● Load balance mode
● Check consistency rate
● Rebuild rate
● BGI rate
● Reconstruct rate
● Enhanced auto import foreign configuration
● Create or change security keys
You must have Login and Server Control privilege to configure the controller properties.
Patrol read mode considerations
Patrol read identifies disk errors to avoid disk failures, data loss, or corruption.
The Patrol Read does not run on a physical disk in the following circumstances:
● The physical disk is not included in a virtual disk or assigned as a hot spare.
● The physical disk is included in a virtual disk that is undergoing one of the following:
○ A rebuild
○ A reconfiguration or reconstruction
204
Managing storage devices