Backup and Synchronisation of Data

  First some basics.In a backup the data in one location is saved to another location.In synchronisation the backup operation is done in two directions;changes to data in one location are updated to data in another location and the reverse is also done.
  Some softwares also offer a third option;while doing a synchronisation no data is deleted.
  Standard features of backup software:
 1.Encryption of backed up data.
 2.Compression
 3.The backup destination can be in the same disk,external drive or a remote server.
 4.Preview the differences in files stored at the two locations.
 5.Email notifications on completion of backup/synchronisation tasks.
  In my following posts I'll describe a few backup software.