This server can use 35GB disk free space, now. This is share disk space from all users.

The service limitation to disk is for management UI only. Not a hard limit that.
This system is basic designed based on the theory of human goodness.

Therefore, in principle, it is possible to use the all of space to yourself. However, this will cause a lot of trouble to others. 
安冨 伸浩 (マイサイト管理人)