The primary file systems available to users are:

In the above table Name refers to the colloquial name of the file system, i.e., what it is referred to in ordinary speech or writing.

The home file system contains all users' home directories as is usual for a Linux system. This is where your standard and primary files reside, most especially your ssh keys file, your login scripts and other configuration files.

Your home directory is subject to a strict quota. Once you exceed that quota you will not be able to write any more to any file within that directory. This has implications for files that log various things, e.g. your command line history, and installed applications.

For this reason, large application codes should be installed in your Lustre directory, or you should use a pre-installed application from the Apps file system.

To request that an application be installed in Apps please open a Helpdesk ticket.

The Lustre file system is a high performance parallel file system which is to be used for all running jobs on the Lengau cluster.

This is a work space, or “scratch” file system and is not intended for long term storage. Any files you store on Lustre must be required for your jobs. Files that have not been accessed for more than 60 days will be considered stale and may be deleted if the Lustre file systems fills up (exceeds 80% usage).

Note that Lustre has a complex structure and is best suited for large files and parallel access. See the separate Lustre guide for more information and important tips on use.

The working directory for all your job scripts must be on Lustre. Each user is allocated a directory on the Lustre file system under

/mnt/lustre/users/username

where username is replaced by your user name.

Large codes, data sets, and output data must be stored under your Lustre directory. This is why we often refer to Lustre as the “work” file system—it's where all your work resides.

Smaller applications, scripts, libraries, etc. can be stored in your home directory, of course.