start:fs_dm:filesystems:quotas

# Quotas on MOGON

A quota is space allotment granted to users and projects. Its purpose is to avoid an over utilization of a file system.

Please Note: All quotas are granted in TB, not TiB (1 TB is about 0.9 TiB). The reported values by shell tools or wrapper scripts are mostly in TiB.

The home directory (see our filesystem overview page for details) is optimized for small files, e.g. scripts. It currently provides a quota of 300 GB and 1 million files per user.

On the login nodes the home directory quota can be checked with this command:

$mmlsquota --block-size auto -u$USER fs1:home | grep -v 'limits'

The default project Quota on the MOGON II Lustre file system is 1 TB.

Projects requiring an extension to this value need to ask the HPC team and provide a plausible argument as well as the desired figure of needed disk space. Depending on the current usage and validity of the request the HPC team may grant additional quotas.

If logged in to MOGON II, the current project quota (frequently identical to group quota) and the used space can be looked up with a this Lustre command:

\$ lfs quota -g <projectname> /lustre/miifs01/project/<projectname>/
• start/fs_dm/filesystems/quotas.txt