| Computer Center


Welcome to Zeuthen

Computer Center

Welcome to Zeuthen

We would like to inform you about the specifics in using the DESY computing facilities. The flyer "Computing service" provides a first overview of the usage of DV services.
Please note, the "Conditions of Use for Information-Processing Systems at DESY" are obligatory for you as user.

1. Account
2. Email
3. Home quota and storage
4. Available Software
5. Computing mailing list

1. Account

We have created your UNIX and Windows account at DESY, Zeuthen. The initial password is valid for five days only. Please change it at the time. Regular passwords expire after six months.

Changing the password

To change your password you can either use the intranet web portal: Registry (only accessible within the DESY network) or the progam passwd on a linux machine. Login from outside is possible on the linux clusters warp.zeuthen.desy.de or pub.zeuthen.desy.de.
Use of warp a ssh tunnel will be built to the workgroupserver of your group automatically. The password is changed simultaneously on all platforms.

General Notice

Please change your password only by this means!
For security reasons passwords should never be saved in programs (e.g. web browsers like Edge or Firefox).

Please inform about the Password Policy at DESY.

2. Email

Every person with an user account in the DESY environment has automatically an email address (firstname.lastname@desy.de) and can send and receive emails via the web client of Zimbra.

Mail Forwarding

Please note, mail forwarding can only be changed in the web client of Zimbra, no longer in the DESY Registry!
Please do not manipulate the .forward file in your home directory for that reason, it does not have any effect.
Further information to Zimbra

3. Home quota and storage


Your initial Home quota is 2 GB. If you need more space in your home directory, please ask your group administrator. You can ask for more space by sending an email to uco-zn@desy.de.


Your AFS HOME directory is accessible under
i.e. /afs/ifh.de/user/t/testuser.
There is a nightly readonly backup of your home directory in /afs/ifh.de/user/<initial>/<user>/.OldFiles/ This directory does not count towards your quota.
An AFS token is needed to access anything in AFS that's not world-readable. This AFS token has a lifetime of about 25 hours.
You get this during the normal login, using kinit, after activating your xsession with xlock or xscreensaver. With klist or tokens you can see the current tickets/tokens.
There are more information about AFS and AFS Backup/Recover.

The default quota of your home directory is 500 MB. If you need more space please contact uco-zn@desy.de for increasing. More space is available
* in AFS group space /afs/ifh.de/group/<group>
   (please contact your group admin)
* in your AFS home directory /afs/ifh.de/user/<initial>/<user>/scratch
   you can get up to 2 GByte scratch space without backup
For space with backup, contact uco-zn@desy.de.
Please take attention to the information about the usage of Storage.

General Notice

The local disk of your desktop PC is not in backup!

4. Available Software


Software for Windows is provided via DSM, a tool for net based installation. The software is classified in different categories. The access to DSM is: Start --> DSM Software Shop


For Unix/Linux the software is mostly provided via system. The command apropos <keyword> searches for the keyword in system databases and displays the result. In addition software can be found with the command module avail.
You can get a list of packages with
     rpm -qa | grep <you are looking for>
and then more information about the package you found with
     rpm -qi <packagename>

5. Computing mailing list

This list is intended for the distribution of important information concerning the computing infrastructure at DESY Zeuthen. It is moderated, and has very low volume:
* archive
* to subscribe

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