Software for disaster recovery

Mrss, we have a customer with an IBM PC server 222 in SUSE with DB ORACLE, a DELL Poweredge, a Compaq Prolian 330 and an HP 330 all with Windows 2000 server. We have been giving assistance with a disaster recovery plan. We have considered the BrightStor SW, but seems to be too expensive. Could you advice us about this kind of SW (for servers disaster recovery) that we can utilize?
Your assistance will be greatly appreciated.
Regards: Jose Solano