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The NHR systems in Berlin are equipped with various file systems each. Their properties and their intended utilization are described here.

Disk quotas based on group ownerships are implemented on each site's global (non-local) file systems.

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External connections to the NHR systems in Berlin or Göttingen require that an SSH key pair is used for authentication. More details can be found here. The location of the private key file can be specified when calling scp or rsync on the user's local machine. Some examples including both data transfer directions are shown below.

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Data transfer in the context of a batch job is restricted due to limited network access of the compute nodes. Please send a message to the support mailing list in case you need further help.

Data Transfer between NHR@ZIB and NHR@Göttingen with legacy accounts

Data transfer with legacy accounts between a Berlin and a Göttingen login node using scp or rsync  works right out of the box - that is, without specifying any keys or passwords. This is enabled through host-based authentication which is active by default. Legacy accounts are those which are opened before 1 July 2024.

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