Tape Archive
The tape archive is available for NHR users.
It is mounted at /mnt/snfs-hpc-hsm with a symlink from /perm.
The tape archive is using the StorNext Shared Storage File System from Quantum.
It has a HDD cache (which is the capacity displayed by df), and the data from the cache is then written to a large library of magnetic tapes that can grow to multiple PiB.
This data store is very reliable and can be used as a short-term archive over the lifetime of your project. For long term archival (10 years) of scientific results (e.g. to follow the rules for good scientific practice) please download the data to your home institution instead. Opening a file can take several minutes because of the very high latency of a tape library.
Usage
For reasons of efficiency and performance, small files and/or complex directory structures should not be transferred to the archive directly. Please aggregate your data into compressed tarballs or other archive containers with a maximum size of 5.5 TiB before copying your data to the archive. For large data, a good target size is 1-2 TiB per file because such files will usually not be split across more than one tape.