Djibrill 0 Newbie Poster

Hi,
I am new to Windows server 2003.
I had add a new 72 GB 15K U320 SCSI HS HDD to my HP Proliant ML370 Server running Windows server 2003 O/S. Unfortunatly it won't recognize it.
The server is configured with three 36 GB 15K U320 SCSI HS HDD with two partitions C (system) and E (data).
I checked in disk management, but the newly added hard disk does not show up.
Any hints?