[8fingerlouie]

> You do not need S3 in your house. Just use the filesystem.

For your home, no, you don’t need it. But if setting up a remote backup, ie at your parents / in-laws / children / summerhouse / whatever, S3 can help cut down on network traffic by offloading checksum calculations to the remote server. It won’t help (much) with backups, but verification of backups will be much faster as you don’t have to transfer everything back home to verify it like with SMB.