Synchronization, Backup, Replication, Consolidation

Src:
http://www.tgrmn.com/web/kb/item27.htm


Notes:
good explaination for these terms

Synchronization : (SRC <- -> DST) src & dst are always synchronized
Backup : (SRC -> DST ) Mirror, just from src to dst
Replication: (SRC -> DST) Only update from src to remote, the old data will still keep in dst
Consolidation : (SRC <- -> DST) src & dst will copy to each other once one file is missed in one side.