Amazon Cloud Drive (acd) offers "unlimited" storage for a very affordable price. I wonder, if there are any backup solutions under linux that are usable with it.
I am aware of acd_cli. With this it is possible to mount acd to a folder, so that in theory any linux backups software can be used.
But there are some limitations, due to the (compared to a HDD) slow data-rate. Thus, reading from the backup must be avoided/limited. Furthermore, the backup must be robust to interruptions and continue where it was stopped.
Last but not least, the backup must be encrypted.
I have tested duplicity/duply, but I have not yet managed to get one full backup finished (does it even continue an interrupted backup, or does it start over from scratch?)
Also, I have done some research about borg backup, but the developers do discurage using acd.
I'd be interested in other proposals and your experience with it.