Google Apps存储空间

1. Additional storage added using User Managed Storage cannot be pooled or transferred to another Google Apps user account and cannot be used for Gmail.
http://googleenterprise.blogspot.com/2011/03/now-available-with-google-apps-user.html

2. Google Apps - purchase storage
http://support.google.com/a/bin/answer.py?hl=en&answer=1047457

3. Customer Pin
http://support.google.com/a/bin/answer.py?hl=en&answer=60233