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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 computing services have been decommissioned and no new jobs are accepted or executed on its compute nodes. Puhti login nodes and storage services are planned to remain available until 15 October 2026.

Data

CSC provides services and instructions for managing research data throughout the data lifecycle: planning data management, finding datasets, storing data, moving data between services, and publishing data.

CSC also provides support for sensitive data workflows. See the sensitive data section in the docs.

This section helps you choose the right instructions for your data-related task.

Working with data

Start here if you are planning how to manage, document, store, find or publish research data.

Moving data

Use these instructions when you need to transfer data between your local workstation, CSC supercomputers, Allas, IDA or other CSC services.

Allas object storage

Allas is CSC's object storage service for storing and sharing research data. Use the Allas instructions when you need persistent object storage, or need to host and share datasets between projects, or between multiple CSC platforms (e.g. cPouta and Roihu).