Dell PowerVault 775N (Rackmount NAS Appliance) - Manual (Page 48)

General Controller Commands
This section describes the general controller operations:
Rescan controller
Flush cache
Enable alarm
Disable alarm
Rebuild rate
Properties
Rescan Controller
The Rescan Controller command can be used to check whether any new disks were attached after a configuration was set.
To rescan the controller, perform the following steps:
1. Right-click the controller you want to rescan.
2. Click Rescan Controller.
After the operation is finished, the console is refreshed and the newly attached disks (if there are any) will appear
under the Array Disk Group object and under the controller object.
Flush Cache
The Flush Cache command forces the PERC 3/DC and PERC 3/QC controllers to write the contents of cache memory onto the
virtual disks. You might want to use this option if you find your application or disks in an unstable condition.
Enable Alarm
The Enable Alarm command enables the controller alarm setting. When enabled, the alarm sounds in the event of a device
failure.
To enable the alarm sound, perform the following steps:
1. Right-click a controller.
2. Click Enable Alarm.
Disable Alarm
The Disable Alarm command disables the alarm. If disabled, the alarm does not sound in the event of a device failure.
To disable the alarm sound, perform the following steps:
1. Right-click a controller.
2. Click Disable Alarm.
Rebuild Rate
The Rebuild Rate command changes the rebuild rate settings. The rebuild rate is the fraction of the compute cycles
dedicated to rebuilding failed drives. A rebuild rate of 100 percent means the system is totally dedicated to rebuilding the