Since Crashplan is abandoning the home market, I’ve been looking for a good alternative. There’s much I like about Duplicacy.
I’d like to ask your advice about whether the approach I’ve outlined below makes sense, or whether there’s ‘a better way’.
So far, I’ve set up a Windows virtual machine to act as a central ‘backup’ server. Several other VMs on the same host are backing up to it. Other physical machines are backing up to it over the local network.
I’d like to do a couple of things:
a) make a second copy of the ‘storage’ on different hardware/drives. I have a Synology NAS and intend to use Duplicacy’s ‘copy’ command to make a copy of the default ‘storage’ on the VM to the NAS (local folder on the VM -> sftp storage on the NAS). The motivation for this is that the VM has a single physical 8TB drive dedicated to Duplicacy sftp storage, so there’s a single point of failure. Having another copy on the NAS means it’ll be protected from drive failure via RAID-6. Since much of the data being backed up are from other VMs on the same host, it makes more sense to do it that way round, for performance sake (assumed, not tested yet).
b) make an offsite copy somewhere. I’m inclined to use Backblaze (‘personal’ not B2) because it’s an affordable flat-rate and unlimited, like Crashplan. The reason the backup VM is windows is because BackBlaze doesn’t support a Linux client for the ‘Personal’ plan. Hubic could be another offsite option, using Duplicacy with Hubic as secondary storage (using ‘copy’ again), though I’d use a Linux VM in that case.
What do you think? any advice?