The import foreign and clear commands are generally more for when an extant virtual disk has some sort of sync error. Clearing and importing (depending on the situation) are ways to bring a member disk back into the array. This new disk you have isn't a member at this time, so those I wouldn't expect those options to show up. For example, say someone has a RAID 5 and something causes one of the drives to fall out of sync, like a timeout condition or a power issue, I'd expect a possibility of seeing a need to import then. The key is that the drive would have a RAID metadata stamp already written to it, an identifier indicating that it is supposed to be an active member of an array. 
I have a PowerEdge R900 server, it has a RAID 5 array, with 3 HDDs.Currently it is operating with only 2 HDDs since 1 HDD failed, what is the correct way in which I should install the new HDD (not hot swap)?As i understand I have to shut down the server and insert the new HDD, but what procedure should I follow in the Bios Configuration Utility to ensure a successful installation? [IMAGE]  
Raid 5 Replace failed single HDD