Chapter 5: RAID Monitoring and Maintenance
Controller
The Controller deals with creating new Arrays, reading events from the memory buffer, setting cache and performance options. Array creation is covered in the Arrays section of this chapter.
View Event Log
The Controller’s Memory Buffer records all the events that happen on the RAID, classified as Errors, Warnings and Information. These are very useful for diagnosing and solving problems on your system.
To see the Event Log, 
in Tree View and select Read Events from the popup menu.
Figure 53. The Event Viewer.
In the Event Viewer, you can view the events, make a permanent record by saving them to a file, and clear the events from the Viewer. You can also clear the events using the popup menu in Tree View.
Note that the collecting and reporting of these Events is independent from the Alert Notification preferences set for the RAID System.
Read Bad Sector Table
To see the Bad Sector Table, 
in Tree View and select Read Bad Sector Table from the popup menu.
In the Bad Sector Table, you can view the bad sectors or media errors on disk drives discovered during Rebuild operations. With this information you can decide whether a disk drive is OK to keep in use or you need to replace it.
Note that the collecting and reporting of this information is independent from the Alert Notification preferences set for the RAID System.
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