degraded disk

[Adam Williams]

I have a server (its actually an HP netserver but it uses an 
LSI/Megaraid card with the exact same SCSI BIOS menu as on the Dell PERC 
cards).  When the server boots up and the Raid card scans the Logical 
Drive, it reports that it is degraded.  And when I go in the SCSI BIOS 
to view configuration, it also says there that the logical drive has 
degraded.  What does this mean and what can I do?  Does this mean that a 
drive has failed?