In the past all backups were made with tape devices. These are expensive, slow and in case of emergency it takes very long time to restore the data.
With near-line Backup – if the main server (source server) fails – users can access the data from the secundary server until the main server is back online.
This is a major step forward compared to traditional tape backups, which require much longer to restore. This minimizes downtime and increases productivity.
Most common way of data backup is to use a production server and a backup server of larger capacity.
In this example the data will be backed up for 7 days. The backup server in this case will require 7 x capacity of the production server. If for example the production server is 1 TB – backup server will need 7 TB.
Data will be replicated every day on each individual share on the backup server (backup on mondays will copy the data on mondays).
Thanks to the byte-level incremental replication only the changed bytes of a file will be transferred – this increases the replication performance dramatically.
In case that the production server fails – users can easely access the data from the backup server
