posted 8 years ago
Skimming through the Rewind product description, I'd have to say no. It looks like they save everything to their cloud service. The good part is this allows them to offer the versioned backups and (most likely) quick performance. The bad news is that now you've just shifted the point of failure to yet another third party out of your control.
FWIW, providing business continuity and disaster recovery has been one of my main hats for the last 20 years. I do backups of all my stuff as well as for commercial clients. Some use cloud hosting, but many live on a mirrored set of disks here on premises. My preference is to use simple utilities like rsync, and then write small scripts to automate the process. The problem with solutions like Shopify is that they are often opaque to this approach because there's no shell access and we can't directly work with the database and filesystem. They instead have API methods to expose what's required, albeit in a roundabout way, and this is most likely how the app providers are doing it.
Writing the code to interact with Shopify's API for a DIY backup could be done, but for a single user it wouldn't make sense from a cost/benefit standpoint unless you wanted to hack on it as a personal project. This is why open source solutions, like Wordpress with one of the popular ecommerce plugins, give you control and flexibility: you can opt for a turnkey hosted setup, with third-party modules to do all the housekeeping, or you can host it yourself and use generic tools to manage things like replication and backups. Or just about any combination in between.