[atourgates]

I can't figure out if at allows seeding backups.

E.g. - backing up your first massive backup locally using an external drive, then moving it physically offsite and beginning the sync online.

That seems like a fantastic feature to me. That way, instead of having - say - a photo library on each of my laptops - I can have a single photo library at a remote location on an external hard drive that's constantly synched with new photos, without the need to upload hundreds of GB in an initial seed.

Plus - of course - being able to access any of my photos from anywhere.

Crashplan offers something similar - but it's purely a backup solution - and doesn't make your files "cloud-like" accessible.

[plusbryan]

I believe so. My photos on two drives were about 3 months out of sync and and it seemed to only sync those that were missing.