Migrating all reports to a new server

I'm Managing Reporting Services in a mid-size company, and we are just
beginning to develop reports for different departments...We just set
up a new server and redeployed all of our reports (there were just a
few so far)...
My question is..What happens when we have hundreds of reports and need
to migrate our entire reporting services system to a new server?
Subsequently, In a worst-case situation, how would we recover reports?
I appreciate your help!
-ScottStill looking for a response...This is an important need. Thanks in
advance!