What is disk space
Disk space is the amount of data allocated to a specific client.
For instance, if a client is allocated 2GB (2,000MB) of disk space, then he or she could store up to 2,000 pictures of 1 MB on that server/account.
When calculating disk space usage, it is usually the combination of all the files saved on the server, plus log files, databases and email space.
If a client exceeds their disk space limit, the server will not allow them to upload any additional files.