Sun Java System Calendar Server 6 2005Q4 Administration Guide
ProcedureTo Disable Hot Backups  Backups are disabled by
default. If you have previously enabled them and want to disable
them, perform the following steps:    1. At a command line,
change to the directory where the ics.conf is located:      cd
/etc/opt/SUNWics5/config    2. Disable hot backups by setting
the following ics.conf parameter to "no":     3. When you have
completed editing the ics.conf file, restart Calendar Server:
The calendar services do not need to be stopped to edit the
ics.conf file, but you must restart the services in order for
the changes to take effect.