Dell 2950 raid configuration

I have a dell 2950 server and i have configured raid 5 on it. It has 6 hdd attached to the server( plugged in) I have configured 1 hdd as hot spare. when i boot the server i can see the msg 

1 virtual drive found on host adapter

1 virtual drive handled by bios 

 

I have another server with the same server spec configuration and raid 5 

When i boot it i see the message displayed 

 

2 virtual drive found on host adapter

2 virtual drive handled by bios 

What is the difference between the 2 and what have i missed ? 

Pls advise  Thanks .