Hi German,
Are both these DC disaster recovery site for each other ? If so then going for an DR solution, active and passive will be best. When Disaster strikes you can switch over.
Also this eliminates the need to manage two OCUM server simultaneously and give a single pane of glass for both sites.
On the other hand if the network connectivity between the two sites are not reliable, then go for 2 OCUM server in active configuration monitoring controllers at each site.
The reason being, that OCUM uses network to monitor and if thats not reliable you will get false positives.
BTW on how to configure OCUM DR refer the following.
If your OCUM server is Windows refer the help.
http://<OCUMserver-name-or-ip>:8080/dfm
Under this Help>General Help
Under this Home > Maintenance > Disaster recovery support > Overview of Disaster recovery support
If your OCUM server is on linux refer this TR.
http://media.netapp.com/documents/tr-3655.pdf
Regards
adai