The hosting provider does not own UCSB account holders' data. Google does not take a position on whether the data belongs to UCSB or the individual user, but they know it doesn’t belong to them. (For specific questions about UC’s intellectual properties and copyright policies, please refer to UCOP’s Copyright Resources.) Specifically, they won’t share your data with others except as noted in their privacy policies. They will keep your data as long as UCSB requires them to keep it. When asked to delete messages and content, the hosting provider makes reasonable efforts to remove deleted information from our systems within a commercially reasonable amount of time.
Borrowed from ETS FAQ.