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Matrix FAQ

We are currently aggregating questions.

  • If your question isn’t listed here, please contact us.
  • Have a look at How-tos.

From time to time I see a red “Offline” notification message

During ramp-up phase, we may need to deploy changes to the server without prior announcement. In such cases, you will encounter brief “Offline” notifications. Don’t reload, your messages will be sent with few seconds delay.

What does “guest” mean in a Helmholtz.cloud Matrix ID?

When the Matrix ID is created, the person’s status as recorded by their home center is checked. If the person is not classified as an employee (e. g. guests, students, service providers, …), the suffix -guest is automatically added to the Helmholtz Cloud Matrix ID. This suffix is assigned by the system and cannot be changed.

How long are chat histories stored?

Messages and shared files are stored for 3 years and then deleted. This means you can scroll back 3 years in your chat history. Messages and shared files older than that are no longer saved.

Does Matrix offer a board feature?

Matrix do not include a board feature. So, you have to move to another service. With Codebase Gitlab by HZDR and (upcoming) Open Project by HZB Helmholtz Cloud offers two alternatives. Check HIFIS Tip How-to Setup Boards in Gitlab.

What does space, team, room, etc. mean?

Matrix and Mattermost use different terms for similar (but not completely equal) entities. Have a look a our little “dictionary”:

Matrix Mattermost Meaning
Space Team Top level structure: mandatory and strictly hierarchical in Mattermost; voluntary and allowing multi-assignments of secondary structures in Matrix
Room
(Gruppe)
Channel Secondary structure: Always belonging to exactly one Team in Mattermost; may be unassigned or belong to one or more Spaces in Matrix.
People Member Individual users.