Monitoring Logical Disks

RAID or advanced disk controllers expose several physical disks as a single logical disk to the operating system. The status of a logical disk typically corresponds to the status of a RAID array (on-line, degraded, rebuilding, etc.). For each logical disk discovered, the Status parameter is displayed:

The Status parameter represents the current status of the logical disk. An alert is triggered when the logical disk is not fully operational (degraded, rebuilding, etc.) or not available at all.

For non-RAID disk controllers (as most of IDE controllers, for example), no logical disk will be displayed.