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HPC Vega uses and integrates technologies for data storage with different characteristics, which provides a variety of different file systems. These provide SLING and EuroHPC users with storage capacity and predefined directories at their disposal.

Name Description Type
exa5 High Performance Storage Lustre
ceph Large Capacity Storage Ceph

Available file system

The following file systems are available for users:

Name Path Description
tmp /tmp Local temporary directory for all users
home /ceph/hpc/home/ Home directory for users
exa5 /exa5 Fast storage
scratch /exa5/scratch/user/ Scratch directory

Home Directory is the user's home directory after logging in. Home directories are for storing, input, output, codes, scripts, etc. and should never be used for runtime temporary/scratch files, as this causes undue traffic that slows the operation of this file system. All home directories are made available to each compute node. Quotas are set in /home. Detailed information for quotas is available at this link.

Scratch Directory is the user's working directory. Each compute node has the file system mounted as /exa5/scratch/user. The scratch file system should be used when running your jobs. Files in this file system are subject to being removed after each run, so please copy any data you wish to save back to your home directory. Quotas are set in scratch directory. Detailed information for quotas is available at this link.

If you need permanent storage of large amounts of data, please contact the support team:


Capacity Description
home 100GB Size of home directory for each user
scratch 20GB Size of scratched directory for each user

Users should regularly check their disk space quota by using the following commands:

df -h /ceph/hpc/home/$USER
df -h /exa5/scratch/user/$USER

Increasing Quotas

For additional space, please contact the support team: