Google has sent an email around to Google Buzz users about their data from the service, which the company announced would be shutting down back in October 2011.

If you’re like me, you were probably surprised to get an email about a service you haven’t thought about in a long time, but Google may still have your data from Buzz, and you have until July 17th to get it out. This is the date, the email informs, that Google will take the last step in shutting down Buzz for good.

Google suggests users save a copy of their Buzz posts to Google Drive, assuming you really care what happens to your Buzz posts. Google says it will store two types of files to Drive. One type is private, and contains a snapshot of the Google Buzz public and private posts you authored. The second type contains a copy of only your public Buzz posts, and by default, will be viewable by anyone with the link, which may appear in search results on your Google Profile (if you’ve linked to your Buzz posts).

Neither file type will count against your storage limits, Google says.

“Any comments you made on other users’ posts will only be saved to those users’ files and not to yours,” Google explains. “Once the change described in this email is final, only that user will be able to change the sharing settings of those files. This means that if you have commented on another author’s private post, that author could choose to make that post and its comments public. If you would like to avoid that possibility, delete all your Buzz content now.”

The new files will only contain comments from users that previously enabled Buzz, and they won’t contain comments that were deleted before moving the data to Drive. When the files are created, they will be treated just like any other Drive file, in that you can do whatever you want to with them.

If you want to take a look at your old Buzz posts, you can do so at http://profiles.google.com/me/buzz.