Research Computing

There are three types of scratch disk available on each cluster:

/scratch is local disk and is the preferred option for reads and writes that are local to a node. It has the fastest i/o and best performance.

/scratch/lustre (on Artemis and Sesame), /scratch/gpfs (on Orbital), and /scratch/pvfs2 (on Della) are parallel filesystems that can be accessed from all nodes in the cluster.

/scratch/network is NFS-mounted disk that is shared between all nodes on a cluster.

NOTE:

• None of the scratch filesystems are backed up.
• Scratch disk is available to all users and if the scratch space is exhausted, jobs may not be able to run.
• Please be considerate and purge any files that are no longer needed or move them to /tigress-hsm for longer term storage.