Hey Matt,
I've used backblaze in the past and found it to be good. I liked that I could set it and forget it plus the price was good.
These days I prefer to use Time Machine with the Time Machine server being a TrueNAS. I prefer to have more control of my data rather than go with back blaze.
If I was looking at backing up data for work I’d be looking at more enterprise grade product to handle my backups like Archiware P5 that can backup and archive data to disk, cloud or tape. I recently implemented P5 at work to move away from IBMs spectrum protect where we backup data to tape.
Tape have a much longer life expectancy than hdd and SSDs. Plus £ per GB they are far cheaper but tape libraries and tape drives are not cheap!
I wanted to write that brief bit about storing business data in case you were looking at backups for business.
Home wise - backing up to backblaze and some disks is a good option.
In terms of what is better for long term storage with HDD and SSDs… it’s a difficult one to call. I worked for several years in a company where we made huge storage systems. I saw HDDs pop on an almost daily basis in customer systems but SSDs popped far less often.
I think for 10TB of data I’d look at HDD purely from a cost view. Less to buy up front and cost less to replace.
Hope that helps!
