I was about to use Backblaze Personal and then noticed that. Was then about to use Arq + Backblaze B2 when I realized that (1) Arq supports OneDrive, (2) I have a TB of OneDrive as part of my Microsoft 365 subscription, and (3) I only use cloud storage for file transfer between mobile devices and desktop, so my OneDrive space was almost all unused, so went with Arq + OneDrive. 3 years of weekly backups later and I've still only used about half of my 1 TB.
The only thing I'm not happy about with Arq is that a "verify" downloads all the backup data to checksum it. That takes 3 or 4 days on my connection.
I thought I read that many cloud storage provider APIs provide a way to ask the server for a checksum of a stored blob. I'd have expected Arq to make use of that, but maybe it is not reliable (the server might just report what the checksum is supposed to be, not actually read the data and checksum it?).
Arq documents their storage format. I wonder if it would be possible to use a VM on Azure to access my OneDrive storage and do the checksumming on the VM?
The only thing I'm not happy about with Arq is that a "verify" downloads all the backup data to checksum it. That takes 3 or 4 days on my connection.
I thought I read that many cloud storage provider APIs provide a way to ask the server for a checksum of a stored blob. I'd have expected Arq to make use of that, but maybe it is not reliable (the server might just report what the checksum is supposed to be, not actually read the data and checksum it?).
Arq documents their storage format. I wonder if it would be possible to use a VM on Azure to access my OneDrive storage and do the checksumming on the VM?