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01-August-2014

Built-in basic backup types

Four backup types (Full, Stack, Incremental, Differential) are built into the program.

These backup types are applied to all data sources, supported by the program and can be used to back up files both from a personal computer, local network and remote FTP.
With this four backup types you can select the best backup and restore strategy for any kind of your data according to your requirements.

D_back file-backup types config sheet

Full backup

full backup This is the elementary type of backing up. Each time the newly created backup file replaces the old one.

When you're using full backup, you can restore files from the latest backup only.

Stack backup

stack backup This backup consists of latest N full backups. All backups are located in the same directory. When the newest backup is being created and the quantity of backups exceeds N, then the oldest one is being removed from the directory.

On restoring you can select restore point from any latest N backups were made.

Incremental backup

incremental backup This is a backup in which only the files that have been modified since the last backup are copied. It consists of "full backup" and folowing sequental incremental backups. Incremental backup consists of files which have been changed or added since the last backing up.
When N incremental copies will be created, or the volume of incremental backups will exceed N percents of the full copy, or N days has passed since the full backing up, then at the next execution all old backup files will be deleted and the cycle will be repeated from making full backup.

If an additional parameter save old full backups it checked, then the full backup will not be deleted at the beginning of the new cycle and can be used for future restoring.

You can select restoring point from any point in date-time when latest backups were made. If you checked save old full backups then this backups can be selected for restoring too.

Differential backup

differential backup This backup is consists of two files - full and differential backup.
At first the program creates full backup. Next executions generate a differential backup - the backup copy of changed or newly added files since the last full backing up. If the volume of differential copy exceeds N percents of the full copy or at least N days has passed since the full backing up then the program begins a new cycle with a full backup.

You can restore files only from 2 points in date-time - the time point of the differential backup creation or the point when full backup were made. Similar to the incremental backup type, if you checked save old full backups then this backups can be selected for restoring too.

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Common Backup Types explained in plain English
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