The differential backup focuses only on modified files since the last full backup , which makes it slower and more storage space Coiteux an incremental backup but also more reliable because only the full backup is necessary to restore the saved data . The Delta Backup is an incremental backup on elements of data to finer granularity , that is to say in each block of data and not at the file level only. I want to know that which one is best Samsung 2Tb or Hitachi 2Tb for NAS? Please suggest.
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