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Warning!

Puhti and Mahti will be decommissioned after Roihu becomes available. Users should clean up unnecessary files and move any required data by the end of August 2026. See the Roihu data preparation instructions for details.

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

How to store data on Pouta?

Pouta provides two choices which are not backed up by CSC:

  • Temporary storage via local disks attached to virtual machines. OpenStack calls this ephemeral (meaning lasting for a very short time) storage.
  • Longer term storage via Volumes. Volumes appear as raw disks attached to virtual machines. See:

Alternatively, you can access data in Allas object storage.