I'm going to dump a lot of information on this thread, as I have been working out a larger Medium post on the topic.
Backblaze is great, and I use them for my SMB IT clients (day job, though self employed). They're the only safe bet in cloud backup as they're cash flow positive, without any debt, and will be around for a while. Their StoragePods are amazing, and if you really want one you can either build it or buy one. This isn't for home users. The downside is that a pelican case with 5tb-8tb drives moves data faster than any internet connection can.
Large RAID sets are great, but really, only should be used as on online copy of all data. RAID is not backup, and if you can afford the 2-4 days to rebuild a drive set, then you've got more time than me. Tape is a love hate relationship, mostly because while the drive is expensive, the tapes are fairly cheap and unlike hard drives, they're designed to be inactive for a long period of time and work fine. The downside is you have to restore the tape to a destination in order to use the data on it, and even at the fastest speeds, no one wants to wait that long.
JBOD arrays and software RAID are nice, I highly recommend using the external TB JBOD arrays when dealing with lack of expandable disks (thanks Apple...). Depending on your comfort levels, ZFS makes life a lot better, though everything has trade offs. I like Synology NAS boxes, mostly due to having done data recovery on one. A linux live-cd and a motherboard with enough sata ports and I got my clients data back.
Generally speaking, the whole archive/backup solution starts with your workflow. When you get to a computer, how do you handle files you've created? In a perfect world, you'd copy from cf/sd/xd/cfast/ssd to 2-3 places - working space, backup space, archive space. The working space should be a SSD, be it local or on a network share. The backup space should your machine backup process - in the Mac world this is your Time Machine setup - so that copy happens automatically in the background (you backup your workstation right?). The archive space is where one copy of all your data lives, but you never overwrite the files there, think of it as a read only share.
For cloud backup, point it at the root working folder of the SSD and let it do it's thing. They're offsite, and it just runs. Make sure your online backup company likes your file sizes and media types - I know some companies won't touch video files without a surcharge.
There are two other copies that need to be maintained, and it's a mostly manual process as they're the 'local offline' and 'remote offline' copy. When you finish a project, or need to free up working room, you'll need to copy the project folder to 3 locations - archive space, local offline and remote offline. It's easy to grab a drive off the shelf and put it back (the local offline) but getting a disk from somewhere else is a pain. Some folks would just have a stack of 500gb/1tb disks ready to copy the data to then ship off site. Folks with a office/studio away from home can do this on their own schedule.
By using 'copies' you're not relying on a backup software package for file access. I use Chronosync on the Mac, but there are a few different options out there. The goal is that worst case, you're doing a single drive recovery with the likes of Ontrak or DriveSavers. If you want to be redundant, do 2 copies of either the local or remote offline, each on a single brand of drives - there's only 2 really, WD and Seagate.
I'll push further into the Medium document, and will think of 4-5 cases where things could be improved. The key is to have multiple copies, in multiple places and an easy way to get back up and running.
This is even more critical now due to the crypto ransomware making life for PC users hell. Imagine your entire portfolio encrypted and held for ransom that you pay in bitcoin. It's happened at hospitals here in the USA, so keep an eye on things.
-Joe
PS - forgot to post a photo - this is photo of 47.5TB of disk, and doesn't include the 30TB I have in my colocation rack, nor the drives in the safe...
