BI 4.0 DR setup

Hi,

I am trying to build DR setup to existing Production BI 4.0 instance on Sybase/Windos 2008 platform.I read various places to backup CMS database and FRS (input and output) directories and restore same on target location.

I need clarification to following:

1. To restore CMS database, Do i need to use database tools e.g Sql anywhere 16 or simply windows copy paste DB file from one host to other.
2. On target host, i installed plain vanila BI 4.0 instance along with database name (BI4_CMS). So if i use restore option, Do i need to overwrite the existing database with the one from source system or create another database.

Thanks

Vik