Storage Overview

There are various data storage areas avalaible to users, associated to different services, usages, capacities, acess etc.

Disk storage adapted to local usages :

• HOME : Personal storage space associated to the user $HOME environment variable
• TMPDIR : Temporary shared area available on all compute nodes via the $TEMPDIR environment variable
• MUSTFS : Group data area accessible from all MUST ressources via /mustfs used for non-critical experimental data that have to be accessed regularly by several colleagues.

Storage adapted to large-scale or grid computing environments :

• CernVM-FS: Read-only remote storage (CVMFS) used for software distribution accessible via universal namespace /cvmfs
• dCache : High capacity storage dedicated to large-scale distributed computing (such as EGI/WLCG)