You can access your ZiiDisk storage by the following ways: 
a) Go to disk.zii.com and login with your Zii Account
b) On your Zii Services microsite, click on the toggle button beside the services logo on the left side of the top menu bar. Select ZiiDisk from the menu.
c) Login to "My Account" and access the ZiiDisk link found under "Zii Services".