Rename users based on the mapping file named DBMapFile and create the new calendar database in the destination directory named newcalDB:
csrename -t newcalDB -m DBMapFile rename DB
Rename users based on values in the mapping file named NewNames, create the new calendar database in the destination directory named NewDB, and modify the Calendar Server attributes in the LDAP directory server:
csrename -t NewDB -m NewNames rename LDAP