I think there is no problem just verify if the system backup all these components:
•Cisco Unified Communications Manager database (CCMDB), includes Cisco Unified Communications Manager/CDR Analysis and Reporting/Call Detail Records)
•Platform
•Music On Hold (MOH) Audio Files
•BAT Bulk Provisioning Service (BPS)
•CCM Preference Files (CCMPREFS)
•TFTP Phone device files (TFTP)
•SNMP Syslog Component (SYSLOGAGT SNMP)
•SNMP CDP Subagent (CDPAGT SNMP)
•Trace Collection Tool (TCT)
•Cluster Manager (CLM)
•Cisco Extended Functions (CEF)
Take a look on The DRS Admin Guide for these two versions they backup and restore the same components.
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/drs/8_6_1/drsag861.html#wp106411
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/drs/8_0_1/drsag801.html
Regards
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Leonardo Santana
Regards
Leonardo Santana
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