In the first step, data is backed up with the help of snapshots, which are created directly on the data storage responsible for the CCS and can be restored relatively easily by the HRZ. The snapshot schedule is as follows:

• Every day at 02:00 a.m.
• Every week on Sunday at 03:00 a.m.
• Every month on the 1st Saturday at 03:00 a.m.

The data backup is carried out in the second step with the help of backups, these are transferred from the data storage responsible for the CCS to a backup system. The backup schedule is as follows:

• Every Monday at 05:00 a.m. with a retention period of 3 months

The servers are provided with regular updates at the end of each semester break; the exact time of the required work is communicated at least one week in advance. Security-critical updates must be installed as soon as they become known; in this case, notification will be given at short notice.

After an update, the caches of the web browsers must generally be deleted to ensure proper functioning:

• Log out of the Collaboration Cloud in the web browser
• Close the tab
• Google Chrome:
  • Settings > Cache (type in) > Clear browsing data
    • Period: Total time
    • Browser history: deactivated
    • Cookies and other website data: deactivated
    • Images and files in cache: activated
    • Click on the [Delete data] button
  • Restart the web browser
• Microsoft Edge:
  • Settings > Privacy, search and services
  • Section “Delete browser data” > Select items to be deleted
    • Time range: Total time
    • Browsing history: deactivated
    • Download history: deactivated
    • Cookies and other website data: deactivated
    • Cached images and files: activated
    • Click on the [Delete now] button
  • Restart the web browser
• Mozilla Firefox:
  • Settings > Cache (type in) > Remove data…
    • Period: All
    • Cookies and website data: deactivated
    • Temporary files and pages in the cache: activated
    • Click on the [Delete] button
  • Restart the web browser