How can I see disk usage?

The somewhat obscure commands

/usr/lpp/mmfs/bin/mmlsquota --block-size 1G -u cnh nbusers
/usr/lpp/mmfs/bin/mmlsquota --block-size 1G -u cnh home

show the current disk space and file count use for a particular account (in this case account cnh) on the scratch file system ( nbusers ) and on the backed up file system ( home ). The account limits for space and file count are also shown. Quotas on nbusers are set relatively low by default. Account holders with a legitimate need can request increases to their nbusers quotas by emailing

Where should I put world or project shared datasets?

Project directories with group ownership will be coming soon.