slide about backup restore using tar and dump

1. Perform Backup
Restore Using Tar And
Dump

2. Description Tar
 Store file and directory.
 File level backup tool.
 Archives and extracts to/from a single file.
 Controlled by the key argument.
 The work only on mounted file system

3. Option the command
 Tar –cvpzf backup.tar.gz
 C- create a new backup (doing installation)
 V- verbose mode (it is version)
 P- preserves the permissions (restore original file)
 Z- compress the backup file (with ‘gzip’ to compress the file)
 F- filename backup (the file to make extract)

4. Description Dump
• Only backup entire file system and can backup from part of file system.
• Not store files and directories but backup block level.

5. Option To Dump
0-9
• Selecting a dump level of 0 backs up all files (a full dump)
• A higher number backups only those files modified since the last dump of an equal or
lower number (incremental dump)

6. Command Creating A Backup With Dump
* #dump options arguments filesystem
Dump Schedules Level
 Sunday: level 0 (full dump). Eject the tape when done.
 Monday: level 9 (incremental dump)
 Tuesday: level 8 (incremental dump)
 Wednesday: level 7 (incremental dump)
 Thursday: level 6 (incremental dump)
 Friday: level 5 (incremental dump)
 Saturday: level 4 (incremental dump)

7. Option of the level
 After the full backup on Sunday, a level 9 incremental dump is done the next day, and a successively lower
dump level is done each day after that.
 This results in all the files that have changed since Sunday being backup on every single incremental backup.
 Each incremental backup is larger than previous, the backup contains all of the files from the previous
incremental backup.