What is disk space?
Disk space is the amount of data allocated the a specific client. For instance, if a client is allocated 5GB (5,000MB) of disk space, then he or she could store up to 5,000 pictures on that server if each picture is 1MB.When calculating disk space usage, it is usually the combination of all the files saved on the server, plus databases and email space.
If a client exceeds their disk space limit, the server will not allow them to upload any additional files and will not be able to send or recive emails.