Basic Backup Types implemented in D_back software
Five built-in backup types
(
Full,
Stack,
Advanced Stack,
Incremental,
Differential)
are an incredibly versatile and capable to satisfy requirements both of beginners
and advanced users.
These backup types are a fundamental basis of our tool. They are completely applicable to
backing up files both from a personal computer,
local network and remote FTP, and
allows you to customise the best backup strategy
for any kind of data according to your requirements.
Full backup
|
This is the elementary type of backing up.
Each time the newly created backup file replaces the old one.
|
Stack backup
|
This archive consists of the last created full backup and N previous versions.
This N previous versions are organized in stack manner, all backup files are located in the same directory.
When the newest backup is created then the oldest one will be removed from the archive,
in such a way that the quantity of backup copies did not exceed N.
Advanced stack backup
The structure of this archive is like stack archive with one addition:
it allows not to store the unchanged files in the old versions of backup copies.
|
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 N folowing sequental incremental backups.
(where N - is a stack size parameter).
The first backup should include all files - a "full backup".
The next backup copy could also be a "full backup" but it is usually much quicker to do,
because only files which have been changed since the last backing up
will be included in the incremental backup.
When N incremental copies will be created, then at the next step all old backup files
will be deleted and the cycle will be repeated from the beginning.
Exists possibility to save the full backup at the beginning of the new cycle.
If an additional parameter save full backups it checked,
then the full backup is renamed and saved in the same directory.
|
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
(Make a full backup only if ... parameter) or
at least N days has passed since the full backup creation
(Make a full backup only after ... parameter)
then the program begins a new cycle with a full backup.
|
