Using non-HPC storage from GWDG

This article describes how users from the University of Göttingen, MPG and related institutions can transfer data between the HPC storage system and non-HPC storage provided by GWDG. These include the Stornext Unix homes and the GWDG tape archive (AHOME), which are not part of the HPC cluster and not accessible from regular HPC login, transfer and compute nodes.

Note

This article is work-in-progress.

More in-depth information and how-to guides / examples will follow. This will become very relevant in January 2026 with the deactivation of legacy SCC usernames on HPC nodes.

GWDG storage transfer nodes

We offer two dedicated nodes, gwdu107 and gwdu108, reachable via gwdg-storage.hpc.gwdg.de, to transfer data between HPC and non-HPC storage, as well as between HPC usernames (like u12345) and non-HPC AcademicCloud usernames (like jdoe1). You can login to these nodes via SSH (or rsync) with both kinds of usernames and use your POSIX group HPC_u_<academicuser> to provide access to your data to other usernames belonging to your AcademicID. The fingerprints of the nodes’ SSH host keys are the same as those of our other login nodes, see Logging In. They have access to all HPC filesystems except:

For more information on how to use your HPC_u_<academicuser> group, setting permissions and transferring data, see the pages Data Migration Guide, Data Sharing and Data Transfers.

Legacy SCC usernames

Until the end of 2025, some AcademicIDs could login directly on HPC nodes belonging to the SCC, so-called “legacy SCC usernames”, without using dedicated project-specific “sub-users” (u12345) belonging to the main AcademicID in the form of application credentials. This will no longer be possible, starting January 2026. The “GWDG storage” nodes are the only HPC nodes where you will be able to login as these usernames from then on. Of course, you are also able to login to these nodes with your AcademicID username if you have never had it activated as a legacy SCC user, but are a member of any HPC project in the HPC Project Portal.