Advanced Features | ![]() |
The Advanced Features task is for setting advanced configuration parameters of your array controller. This task may or may not be available depending on the type of array controller and its current configuration. Physical Drive Write Cache This feature allows you to enable or disable write cache on the physical drives attached to the controller. Physical drive write cache can improve performance by writing data to random access memory, which is faster than writing the information to the drive media. Data is eventually written to the media for permanent storage. This feature is only available for certain array controllers and if the physical drives support write cache. ![]() Warning: The write cache on physical drives is NOT backed up by batteries. Without the proper safety precautions, use of write cache on physical drives could cause data loss in the event of power failure. To ensure data is properly protected, use redundant power supplies and Uninterruptible Power Supplies. Also, if you have multiple storage enclosures, all data should be mirrored across them. Use of this feature is not recommended unless these precautions are followed. Disable Redundant Controller This feature allows you to disable the non-preferred controller of a redundant pair of controllers. In an Active-Standby configuration, the non-preferred controller is the standby controller. If your controller supports this feature and you wish to remove the non-preferred controller from a redundant pair of controllers, then execute this task and save the configuration. Monitor the controller's front panel display. Once the controller has been designated as disabled, you can safely remove it from your system. This feature is only available for certain redundant array controllers. |