zarafa-archiver -A
--local-only option to zarafa-archiver causes it to only archive the primary stores that live on the server to which zarafa-archiver is connected. This is the server on which zarafa-archiver is executed unless otherwise configured in the configuration file.
zarafa-archiver -A --local-only
zarafa-archiver -u <user name> -A
/etc/crontab.
0 1 * * * root [ -x /usr/bin/zarafa-archiver ] && /usr/bin/zarafa-archiver -A