Why do that, when you could run out to Costco and buy a big enough drive that is more than adequate for a TM backup yourself, instead of relying on a cloud solution, and a dependency on a fast enough internet connection to get to your backup? That kind of defeats the purpose of having a backup as when you need to restore is based on a catastrophic failure where you may not have access to anything. And waiting for them to send you a drive of your data versus having faster access to your data either onsite or at a location that is not where your disaster is is a no-brainer.
For example, the backup solution I have is 2-fold:
- back up my MBP via Time Machine to an external SSD. Store that SSD offsite (parent's house, storage unit, etc.) that is easily accessible in case of disaster. Every week or so, bring that disk back and back up my MBP to it via Time Machine again.
- Back up my MBP via Time Machine to my Synology NAS. The key to doing this so it doesn't take an insane amount of time is by performing the backup over Ethernet rather than WiFi. This will require a switch or router (most routers for your upstream service should have enough ports to connect the NAS and your Mac to), that way you're getting the maximum amount of throughput your switch or router can push versus being limited to WiFi speeds. For example, max speed for 802.11g WiFi routers is 54Mbps, whereas a switch can be at Gigabit (1Gbps) speeds or more. When it comes to pushing a lot of data, WiFi is more of a bottleneck than anything, as it is best suited for portability than speed.
- Back up my Synology NAS to an external SSD. This not only includes all data on my NAS, but the Time Machine Backup as well. I'd perform this backup every week or so, and store that offsite. Bring that back in after a given period of time, and back up the NAS again.
I'd perform #2 as much as possible, while #1 and #3 are done maybe once a week or every two weeks. This way, if I lose my Mac or have to start from scratch again, I retrieve the TM backup on the external SSD (not the one from the NAS), I install MacOS, use Migration Assistant and either point it at my TM backup on the external SSD (that would be faster than over the network), get back to where I was a week before the disaster occurred, and then TM restore anything else more recent than that week from the NAS.
A lot simpler and cheaper than paying for a service to handle it, especially if what is being backed up to that service is sensitive data (PII, PCI, PHI, Bank info, etc.)
In a pinch, one could do this with 2 separate external SSDs and get the same result. The key here is to keep one of those SSDs offsite. The cost/benefit of this option is much cheaper than the monthly fee for a service to get your data and then risk losing it because of a disaster on their end.
BL.