Failed disk on DL380

I have a failed disk on my DL380 server.
Currently there are 4 disks configed to use Raid 5.
If I replace the disk with the same size, will I have to change anything to get the data back onto the disk?
Or will Raid 5 automatically replicate the data across all the disks?
Thanks.
Sunny

P.S. This thread has been moevd from Disk to ProLiant Servers (ML,DL,SL). - Hp forum moderator