As far as I can see, the major cloud-based backup services that exist for Macs – for example iCloud, Backblaze, or iDrive – back up only your work files.
That's great, but it doesn't achieve the comfort of Time Machine which backs up the entire system state, allowing you to restore your backup to a different Mac and continuing with your work without having to first set up your work environment, like with those services that only save your files.
Is there a product that does this, either as a cloud-based service or a tool that allows you to upload state to your own online space (Web, Amazon S3…) via FTP or similar?
Alternatively, is there a sane way to do this using Time Machine, say by hosting a TM volume on a virtual private server?
Best Answer
Dolly Drive comes to mind. My understanding is they offer exactly what you want, although you'll have to double check if they do it in a manner that suits you. They do offer a fee trial, but this is limited to 100GB - so it probably won't allow you to test it properly for your purposes.
Since you mentioned using a virtual private server, you could do this without the need of purchasing any extra software. You will, however, need access to a VPN you can use (usually at a monthly or yearly cost). This option also requires that you understand how to use SSH (to run commands, and to edit files). If this is something you're comfortable with, you can check out Configuring Time Machine to back up to your own server over the internet
Another possible option is to just use
rsync
to regularly copy your data to a cloud service. Rsync is a Unix tool to synchronise data between disks or servers, and it supports incremental updates. This option, of course, requires you to be willing/comfortable to use Terminal. As a starting point you can launch Terminal and enter theman rsync
command for details.I'm sure others here will have suggestions for you.
My personal view
You can choose to ignore this little blurb, otherwise read on. :)
My preference is not to use the cloud for this type of backup. The cloud is great for low volume data storage and file services (e.g. Dropbox, iCloud, Google Drive, MS OneDrive, etc), but for this type of backup it's not (at least not yet). And, in terms of the OS you can always restore macOS directly via Apple online.
My recommendation to users is to always alternate two TM backup drives and store one of them offsite. By way of example, I'll explain how I do this for one of my Macs (but I follow a similar process for all my machines!)
Now, in terms of keeping one of them offsite, you have a number of options. Over the years I have used as my offsite location any of the following:
Basically, the idea is that your offsite drive is somewhere that protects your data in the event your house burns down or you get robbed. My strong suggestion would be in a locked drawer at your workplace (unless you work at home). Most people's workplaces are air-conditioned, secure, and convenient.
Regardless of the 'offsite' location you choose to keep your hard drive, there are some key factors to keep in mind: