====== AFS network file system ======
[[wpde>​Andrew_File_System|AFS (Andrew File System)]] is the network filesystem at the department of Mathematics. The home-directories live there as well as the homepage-directories.\\ Unix- and Windows systems use the same filesystem. It is also possible to install the AFS on Mac OS X-Systems, Notebooks, self-maintained or private computers and use it also from home.

Your **home quota** is restrained to 25 GB of storage. The command //fs quota// displays the percentage of used quota. If more quota is required, please sent a well-founded request to the [[rt@math.uni-hamburg.de|IT-Group]].
 
===== AFS-setup on self-maintained computers =====

  * [[en:user:afs:install#linux|For Linux]]
  * [[en:user:afs:install#windows|For Windows]]
  * [[en:user:afs:install#mac_os_x|For Mac OS X]]

===== AFS for Linux- / Mac OS X-Users =====
Your **home-directory** with your data lies at:

/afs/​math.uni-hamburg.de/​users/''​GROUP/IDENTIFIER/''​ \\ e.g. /​afs/​math.uni-hamburg.de/​users/''​it/​fmnv165''

Your **WWW-homepage** lies at:

/​afs/​math.uni-hamburg.de/www/​home/''SURNAME/''​ \\ e.g. /afs/math.uni-hamburg.de/​www/​home/''​xyz''​\\ or: /afs/math.uni-hamburg.de/​users/''​GROUP/IDENTIFIER''/​public_html 

===== AFS for Windows-Users =====

For windows users the path to the **home-directory** lies at:

%%\\afs\math.uni-hamburg.de\users\%%''GROUP\IDENTIFIER''\ \\ e.g. %%\\afs\math.uni-hamburg.de\users\%%''it\fmnv165''\


Your **WWW-homepage** lies at:


%%\\afs\math.uni-hamburg.de\www\home\%%''SURNAME\'' \\ e.g. %%\\afs\math.uni-hamburg.de\www\home\%%''xyz''\\ or: %%\\afs\math.uni-hamburg.de\users\%%''GROUP\IDENTIFIER''\public_html

You can enter these paths directly in the address bar of the Windows-Explorer (the app with a yellow folder-symbol, not the Internet Explorer!) or – if you need to access the folders regularly  – you can add a drive letter by right clicking on "This PC" and then "Map network drive"
===== How to setup Thunderbird and Firefox profiles in AFS =====
  * [[en:user:afs:mozilla|Mozilla-profiles under Windows]]
  * For Linux-users all configurations incl. profiles in AFS are automatically available

===== Access Problems =====
When a new user account is added to a computer, sometimes this account can't access the AFS after being logged in to the computer.\\ 
A solution was found by Lena: [[user:it-gruppe:afs:mehrbenutzer|Solution]]

===== Daily Backup =====
For all directories stored in the AFS a daily backup is performed. In this way its always possible to access yesterdays version of your data. The 'public'-tree directories are also backuped daily in the AFS but are not hard-linked. If data from the 'public'-tree is needed please contact the [[rt@math.uni-hamburg.de|IT-Group]]


**Important**
On Windows the following paths must be modified. Each slash '/' must be replaced by a backslash '\' and the backslash at the beginning of the path must be doubled.\\


__Example:__
''/afs/math.uni-hamburg.de/users/it/fmsv030/'' has to be written as: ''<nowiki>\\afs\math.uni-hamburg.de\users\it\fmsv030\</nowiki>''


==== User Directories ====
Home-Directory:
  Directory:
    /afs/math.uni-hamburg.de/users/<Group>/<RRZ-Identification>/
    /afs/math.uni-hamburg.de/users/it/fmsv030/
  Backup:
    /afs/math.uni-hamburg.de/users/<Group>/<RRZ-Identification>/AFSBAK/
    /afs/math.uni-hamburg.de/users/it/fmsv030/AFSBAK/

WWW-Home-Directory:
  Directory:
    /afs/math.uni-hamburg.de/www/home/<Surname>
    /afs/math.uni-hamburg.de/www/home/peters/
  Backup:
    /afs/math.uni-hamburg.de/AFSBAK/www/home/<Surname>
    /afs/math.uni-hamburg.de/AFSBAK/www/home/peters

Public-Directory:
    /afs/math.uni-hamburg.de/public/<RRZ-Identification>
    /afs/math.uni-hamburg.de/public/fmsv030

  *//Normally//, Home-Directories are readable only by the owner.
  *WWW-Directories can be accessed via WWW but //normally// only by their owner.
  *Public-Directories can //normally// be read by all users (worldwide!).


//Normally//, because the owner can modify the access rights for his directories. (e.g. expand rights (permissions) for the Home-Directory or reduce rights (permissions) for the Public-Directory)


==== Common Directories ====
WWW-Directory:
  Directory:
    /afs/math.uni-hamburg.de/www
  Backup:
    /afs/math.uni-hamburg.de/AFSBAK/www


Group-Directories:
  Directory:
    /afs/math.uni-hamburg.de/groups/<Group>
    /afs/math.uni-hamburg.de/groups/it
  Backup:
    /afs/math.uni-hamburg.de/groups/AFSBAK/<Group>
    /afs/math.uni-hamburg.de/groups/AFSBAK/it

<Group> in the path means the abbreviation of the research areas like: ad, az, dd, dm, oa, st