You have two different locations in which to store your data on Talapas:
Home
Your home directory at /home/<username> has a quota of 250GB and can be used to store whatever work-related data you might need.
Projects
For each project you’re a part of, you have a symlink in your home directory to /projects/<project>. This project directory is owned by the PI and all members of the PIRG have read/write access to files created here.