With G Suite Basic edition, each user gets 30 GB storage to use for Google Drive, Gmail, and Google Photos. As a G Suite administrator, you can let users buy more storage. Alternatively, you can buy and manage more storage licenses for your users, but it may be more cost efficient to let users buy individual storage directly. 

Turn on the option to buy more storage

  1. As a super administrator,
  2. Login to super admin 
  3. click on apps-additional services
  4.  turn on each of these additional services:
    • Individual storage
    • Google Play
    • Google Payments

Note: It can take up to 24 hours for purchased storage to be added to an account.