The quota limits the amount of data that a user can upload to your server. To change an FTP account’s quota:
Step 1: Click on the “Change Quota tab” for the FTP account for which you wish to change the quota.
Step 2: Select the desired FTP Quota option.
Step 3: If the desired quota is not unlimited, enter the maximum amount of data in MB.
Step 4: Click on the Change Quota.
Note: The user will not be able to upload more than the total disk space allotment for your hosting account, regardless of the quota you set here.