Disk usage

You may use the Coli computer systems to store data related to your studies. You may store data on the file server, on the web server and on the mail server.

As a general guideline students who are majoring in computational linguistics or language science and technology should not use more than 500 MB of disk space, students with computational linguistics as a minor should not use more than 200 MB of disk space, unless there are special circumstances.

If you require large amounts of disk space for some important project like your thesis or similar, please ask your supervisor to contact Sytems Group to create a special project directory for you.

In your home directory on the file server there is a link named "shadow" which points to the "shadow file system". This file system can be used to store temporary or unimportant data. It is not backed up and data which is stored there can be lost at any time. You may store up to 2GB of data there.

At any rate your home directory is not the right place to store your project data. Disregard of these guidelines may result in your account being locked down.

Quotas

Disk space is a valuable ressource, in both money and administration. To provide a fair share of disk space for everybody, there exist "quotas", i.e. the amount of disk space you are allowed to use. Currently, these quotas are as following:

• File server: 500MB in home, 2000MB in shadow. File server includes both Linux/MacOS home and Windows "My Documents" folder.

• Web server: 100MB
• Mail server: 200MB

How to find out your current disk usage

• File quota
  Log in to "login.coli.uni-saarland.de" via ssh and start "ncdu". For the shadow filesystem type "cd ~/shadow; ncdu"

• Web server
  Log in to "www.coli.uni-saarland.de" via ssh and start "ncdu".

• Mail server
  Login to the Coli webmail server, your usage is shown in the top left corner. Do not be confused or tempted by the larger quota displayed there; this is a hard quota, upon reaching of which the mail server will stop accepting emails for your account altogether. If you ever reach that hard quota you may be permanently banned from the system. To ensure that your emails are actually deleted, you will need to select "Purge Trash". You may wish to move some of your emails (including your sent emails) to a Local Folder, e.g. archive-2013.