Amount of space available on your account you can check on a LTS server after logging in through SSH using command 'quota'. The following is an example of this instruction:
s000000@lts:~$ quota -s
Disk quotas for user s000000 (uid 12345):
Filesystem space quota limit grace files quota limit grace
files:/home/students
716M 2048M 2048M 19149 0 0
mx1:/var/mail 80K 51200K 51200K 24 0 0
On the example above it is visible that on an account 716 MB is available out of 2048 MB granted.