====== Digital archiving ======
About the long-term backup problem.

What kind of data?
  * source code;
  * photographs;
  * music;
  * video;
  * mail;
  * books, papers, etc;
  * administrative data (bank statement, invoices, etc.).


===== Data format =====

  * better if not encumbered by any known patents; flac, ogg, png, etc.;
  * popular format: MP3, JPEG, etc.


===== Space =====

  * need more and more space;


==== Where to backup? ====

  * On line:
    * privacy
    * expensive
  * Network Attached Storage:
    * not long-term
  * CD/DVD
    * hard to keep backups up to date
  * TAPE
    * transfer rates
    * http://www.tomshardware.com/reviews/backing-tape-drives,593.html
    * http://baheyeldin.com/linux/using-tape-backup-on-linux-for-a-home-network.html


On line solution: Nextcloud.


====== The case of pictures ======

===== My solution =====

  * NAS:
    *  all photographs;
    * //real-time// backup.
  * print as much as possible on quality material;
  * CD/DVD
    *  regular backup, but a little more spaced in time (need to waste a lot of time in order to have up to date backups).

You can distribute your photographs (numeric and printed) in your family.


===== Statistics =====
  

|         ^ Number of photos  ^
^ 1999    | 35                |
^ 2001    | 49                |
^ 2002    | 16                |
^ 2003    | 26                |
^ 2004    | 76                |
^ 2005    | 286               |
^ 2006    | 308               |
^ 2007    | 411               |
^ 2008    | 787               |
^ 2009    | 612               |
^ 2010    | 2905              |
^ 2011    | 1935              |
^ 2012    | 1719              |
^ 2013    | 2297              |
^ 2014    | 1571              |
^ 2015    | 3050              |
^ 2016    | 2216              |
^ 2017    | 2161              |
^ 2018    | 2471              |
^ 2019    | 2130              |
^ 2020    | 1845              |

Before 1999: thousands of analogue photographs (backup on photos album) and 242 photos scanned.


===== Naming convention =====

ISO 8601


===== Transfer your photographs to your computer in 5 steps =====

  - transfer on computer with digiKam;
  - use the [[https://apps.kde.org/kipi_plugins | KIPI]] plugin to batch rename all the photographs;
  - change rights: ''chmod 700 *.jpg'';
  - geolocalization with KIPI;
  - tag your photographs.