Etusivu Tutki Apua
Kirjaudu sisään
mirrors
/
borg
peilaus alkaen https://github.com/borgbackup/borg
2
0
Haarauta 0
Tiedostot Esitykset 0 Wiki
Puu: 5b441f7801
Haarat Tunnisteet
borg
/
docs
/
foreword.rst

foreword.rst 2.2 KB
Historia Raaka

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465 
  1. .. include:: global.rst.inc
    2. 

  2. .. _foreword:
    3. 

  3. 

  4. Foreword
    5. 

  5. ========
    6. 

  6. 

  7. |project_name| is a secure backup program for Linux, FreeBSD and Mac OS X. 
    8. 

  8. |project_name| is designed for efficient data storage where only new or
    9. 

  9. modified data is stored.
    10. 

  10. 

  11. Features
    12. 

  12. --------
    13. 

  13. 

  14. Space efficient storage
    15. 

  15.     Variable block size `deduplication`_ is used to reduce the number of bytes 
    16. 

  16.     stored by detecting redundant data. Each file is split into a number of
    17. 

  17.     variable length chunks and only chunks that have never been seen before
    18. 

  18.     are added to the repository (and optionally compressed).
    19. 

  19. 

  20. Optional data encryption
    21. 

  21.     All data can be protected using 256-bit AES_ encryption and data integrity
    22. 

  22.     and authenticity is verified using `HMAC-SHA256`_.
    23. 

  23. 

  24. Off-site backups
    25. 

  25.     |project_name| can store data on any remote host accessible over SSH as
    26. 

  26.     long as |project_name| is installed. If you don't have |project_name|
    27. 

  27.     installed there, you can use some network filesytem (sshfs, nfs, ...)
    28. 

  28.     to mount a filesystem located on your remote host and use it like it was
    29. 

  29.     local (but that will be slower).
    30. 

  30. 

  31. Backups mountable as filesystems
    32. 

  32.     Backup archives are :ref:`mountable <borg_mount>` as
    33. 

  33.     `userspace filesystems`_ for easy backup verification and restores.
    34. 

  34. 

  35. 

  36. Glossary
    37. 

  37. --------
    38. 

  38. 

  39. .. _deduplication_def:
    40. 

  40. 

  41. Deduplication
    42. 

  42.     Deduplication is a technique for improving storage utilization by
    43. 

  43.     eliminating redundant data. 
    44. 

  44. 

  45. .. _archive_def:
    46. 

  46. 

  47. Archive
    48. 

  48.     An archive is a collection of files along with metadata that include file
    49. 

  49.     permissions, directory structure and various file attributes.
    50. 

  50.     Since each archive in a repository must have a unique name a good naming
    51. 

  51.     convention is ``hostname-YYYY-MM-DD``.
    52. 

  52. 

  53. .. _repository_def:
    54. 

  54. 

  55. Repository
    56. 

  56.     A repository is a filesystem directory storing data from zero or more
    57. 

  57.     archives. The data in a repository is both deduplicated and 
    58. 

  58.     optionally encrypted making it both efficient and safe. Repositories are
    59. 

  59.     created using :ref:`borg_init` and the contents can be listed using
    60. 

  60.     :ref:`borg_list`.
    61. 

  61. 

  62. Key file
    63. 

  63.     When a repository is initialized a key file containing a password
    64. 

  64.     protected encryption key is created. It is vital to keep this file safe
    65. 

  65.     since the repository data is totally inaccessible without it.
    66.