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Warning!

Puhti and Mahti are being decommissioned in stages, and their storage areas will become fully unavailable from 15 October 2026. Clean up unnecessary files and move any data you need to keep by 31 August 2026. See the Roihu data migration guide for instructions on transferring your data to Roihu.

Puhti scratch is very full: keep only active data there and move or delete everything else. No new Puhti scratch quota will be granted.

Contact

Technical service support requests and feedback

  • Contact us through email or phone or come to our weekly user support session on Zoom
  • Email: servicedesk@csc.fi
  • Phone: +358 9 457 2821
  • Open Monday to Friday from 8.30 a.m. to 4 p.m.

Weekly research support coffees

Does formulating your support request in writing feel cumbersome? Please consider joining our weekly research support coffee sessions on Wednesdays at 2 p.m. where you can directly discuss with our specialists!

LUMI User Support Team

If you have any questions or issues related to using LUMI, please contact the LUMI User Support Team.

How to write good support requests

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