There are multiple places where you can store files. There is your home directory, /home/<username>, and "storage", available at /net/storage/<username>, where <username> is your username.

The quota for home is 2GB for students and 20GB for everyone else. Storage has a quota of 100GB for students and 500GB for everyone else.

The quota for the home directories is so small, because it is backed entirely by fast solid state drives whereas storage is backed by convential rotating rust. Just symlink directories in storage to your home if you need to access them more often.

Group members can also put data into grouphome /net/grouphome/<groupname>. This is meant for data that is relevant to the whole group, in contrast to the former places that are meant for personal data.