Contact   howto

For all ICT related questions and problems within FNWI please contact C&CZ. Helpdesk & Sysadmin phone room mail +31 24 36 20000 HG00.051 helpdesk@science.ru.nl Visiting address We are located on in the front part of wing 5, ground floor of the Huygens Building (rooms HG00.051, HG00.509 and HG00.545). The helpdesk is available during office hours (8:30 - 17:00). During that time the office is staffed. Full address: Huygens Building, HG00.051, Heyendaalseweg 135, 6525 AJ Nijmegen...

High Performance Computing   howto

At the faculty of science, C&CZ manages a number of compute clusters and we have our own computer room with a few dozen racks for server hardware and also some racks in the Forum computer room. Financial model The faculty in general doesn’t own (m)any compute nodes, departments purchase their own servers (we can help configure these), which we install and manage during their lifetime. All clusternodes can be integrated in our SLURM cluster management....

ZFS Volumes   howto

C&CZ heeft een opslagoptie ontwikkeld gebaseerd op ZFS. Deze pagina behandelt de technische details en welke mogelijkheden er zijn. Dit om je te helpen beslissen of dit iets voor jouw organisatie is. Elke data opslag die we uitdelen noemen we een “volume”. Voor deze ZFS volumes geldt: Grootte: De volume grootte kan zo groot zijn als nodig; de enige imitatie is hoeveel disken we in een machine kunnen stoppen. Nu (2024+) kunnen we machines kopen die ongeveer 140-200 TB aan data kunnen bevatten....

Cleanup disk space   howto

You might have received an email that your personal or group network disk is almost full. This articles describes some tools to identify large files/directories and cleanup disk space. Finding large files / directories with WinDirStat (graphical, Windows) WinDirStat is a disk cleanup tool for Windows that provides a visual representation of disk space usage. It helps you to quickly identify and understand which files and folders are consuming the most space....

Carbon Connects   howto

Project: Carbon Connects Funding Party NW Europe Link to officiel website: https://sites.google.com/view/c-toolbox/home

Disk quota   howto

Your personal quota only determine the amount of disk space your own data may occupy and the number of files and folders you may have on your Windows U:\ disk or Linux home directory. Quotas may be active on other disks as well, however not all disks have quotas. The mail servers also use quotas to limit the disk space of each user’s mailbox. Windows On Windows desktops where the home directory is available as U: or H: disk right click on the disk, then choose Properties to view the amounts of used and available personal disk space in kbytes....

CNCZ Medewerkers   howto

Department head Bjorn Bellink Secretary Astrid Linssen Security and Privacy Paul Deimann Edwin Wijnhoven System administration and development Arnoud Thörig Bram Daams Eric Lieffers Miek Gieben Peter Van Campen Ben Polman Remco Aalbers Simon Oosthoek Tobias Cunnen Erik Visser Wim Janssen Application development Alexander Greefhorst Remco Aalbers Operations/Helpdesk/User support/datacenter Bjorn Honing Dominic Van Den Broek John Peters Stefan Reijgwart There also is a list of former employees.

Module command for optional software versions   howto

On C&CZ managed Ubuntu hosts, the “module” command is available. This makes it easy to use specific versions of available software. To view which modules are available, use: module avail and to use Matlab-R2023a: module add Matlab-R2023a` For more info, see the Environment Modules website.

Snapshots with ZFS   howto

Network shares with ZFS as file system have the ability (which C&CZ switches on by default) to make snapshots. A snapshot is a read-only copy of the share, made at a specific point in time. Such snapshots allow you to find previous versions of your files. On most shares, snapshots go back 45 days. After that period they are removed. Tip If you remove a file, you still have the ability to retrieve - up to 45 days - different versions....

Hardware servers   howto

Servers and Workstations C&CZ manages ca. 900 Linux workstations and servers, and ca. 900 servers and workstations with MS-Windows, primarily in the domain science.ru.nl. Dual boot Windows/Linux machines are counted twice. The ca. 350 servers are distributed over three datacenters, ca. 150 have a fast network connection (25 Gb/s). Workstations C&CZ manages (for departments) workstations with Ubuntu Linux or MS-Windows. There are also workstations in the PC-rooms for general use by anybody with a Science login, but also by all RU employees and students and guests with a temporary login....