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Puhti and Mahti computing services have been decommissioned. Puhti and Mahti login nodes and storage services will remain available until 15 October 2026, but are no longer covered by service contracts. Please clean up and migrate your data to Roihu ASAP. See Roihu data migration guide for instructions.

What are volumes? How do I use them?

Volumes are virtual block devices exported from a central storage backend to virtual machines. A volume can be attached to one virtual machine at a time. These volumes can be further used to provide different storage options, such as NFS through a virtual machine running an NFS server.

To know how to use volumes on Pouta, see Persistent volumes.