Today, backup is the most effective method to protect data from risks and the destruction of the virus encoded. But the backup also need to have the general knowledge to choose the way backup data both safe and save storage resources.
Here are the type of backup and our concept:
Normal backup
Incremental backup
Differential backup
Daily backup
backup copy
backup -Normal
+ backup all files on the storage media and reset the archive bit (sign achive) in every file to specify that the files were backed up.
-Incremental backup
+ backup only any files have changed since the backup
or incremental previous normal
+ Delete the archive attribute of the file
+ Reduced workload backup
+ recovery process is more complicated
and incremental backups + Normal backup to restore
right order
-Differential backup
backup only the files that have changed in comparison with the normal or
incremental backup last
+ do not remove the archive attribute of the files
2nd + A differential backup will backup the backup files from
the first not recognized the archive attribute
of the volume + reduce backup than normal
backup, but not lower than the incremental backup
+ recovery process requires only the normal backup and the
last differential backup after
backup -Daily
+ backup files and directories selected items that have been created
or changed since the date of the backup
archive attribute unchanged +
-Copy backup
+ Just as normal backup but does not change the
archive attribute
+ backup type will not be interrupted procedures
another backup ( perhaps because it is a duplicate)
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