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 +31 24 36 53535 HG00.545 postmaster@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)....

November 2, 2022 · updated February 6, 2024 ·  Bram

ZFS Volumes   howto

A new storage option has been developed by C&CZ. This page will show the technical details and properties of this storage, which will hopefully help you make a decision if this is something you want. Any storage we handout we call a “volume”. For these ZFS volumes: Size Storage size can be as large as you want, but smaller than the amount we can put in a single machine. Currently (2023) we can buy machines with roughly 140-200 TB storage....

January 12, 2024 · updated February 6, 2024 ·  Miek

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....

November 24, 2023 · updated February 6, 2024 ·  Bram

  howto

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

November 2, 2023 · updated February 6, 2024 ·  Eric

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/directories you may have on your U:-disk / home directory. Quotas may be active on other disks as well, but 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....

September 13, 2023 · updated February 6, 2024 ·  Ben

CNCZ Medewerkers   howto

Department head Bjorn Bellink Secretary Astrid Security and Privacy Paul Edwin System administration and development Bram Eric Miek Peter Ben Remco Simon Tobias Erik Wim Application development Alexander Fred Remco Operations/Helpdesk/User support/datacenter Bjorn Honing Dominic John Stefan There also is a list of former employees....

August 29, 2023 · updated February 6, 2024 ·  Peter

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.

August 25, 2023 · updated February 6, 2024 ·  Peter

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....

July 5, 2023 · updated February 6, 2024 ·  Miek

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....

May 8, 2023 · updated February 6, 2024 ·  Simon

E-mail and spam   howto

E-mail The faculty of Science has its own mailserver where the e-mails are stored. You can reach this mailserver using a mailclient like thunderbird or one of our webmail clients: Roundcube Rainloop The mailserver has limited space, so we’ve set an initial limit (quota) on the size of the mailbox to 5 gigabytes. When you are notified that your mailbox is getting full, the preferred response is to clean up, for instance by removing the attachments of the largest e-mails in your Sent folder....

April 25, 2023 · updated February 6, 2024 ·  Peter