Recently had the opportunity to try the beta of the new Online Backup from Microsoft. Presently it is being tested along with the Server 8 Beta, however based on my limited experience with it, I hope they make it available for Windows 8 as well as the existing server products. It goes head to head with products like Keepvault and Amazon S3. I think the pictures say it all so check it and if you can, give it try. They are giving people 10G of online backup for testing.