One of the endlessly repeating threads of Internet Discussion about Photography is the question of archiving. Photographers, especially the old guard ("back in my day we had to get it right in the camera, ahem") who dominate these discussions are obsessed with archiving, and will ramble on tediously about RAID arrays, and how many terabytes of RAW files they have lying around. You can practically see them stroking their beards, fussing with their pipes, and resting their large, moist, hands on their prodigious bellies as their audience gets some much-needed rest.
I'm going to break it down for you in practical terms, and then offer up an alternative posture that you can think about.
Are just practicing? Do you go shoot a bunch of birds, or models, or whatever, and then put a selected subset up on instagram or flickr or some forum to get feedback, and that's about it?
You can delete everything immediately. Upload it, throw it away, and move on. Admit it, you're never going to do anything with any of your pictures, nobody is ever going to want them, you are never going to look at them again. Upload, delete, and watch the likes roll in.
Do you occasionally finish things? Great. Hang on to your pictures until you've finished the thing. Then throw everything away. Or, if you want, archive the "finals" for the project. You did cull out almost everything you shot, and keep only a small percentage for the finished thing, whatever it was, right? Throw everything else away. Yes, yes, some day maybe you'll... no you won't. Admit it. You're never going to go back through the rejects looking for missed gold. You're too busy taking new pictures (or you're bored with photography.)
Do you have actual clients? HOLY SHIT! A REAL UNICORN! Ok, unicorn, steady now. In the first place you probably know what the hell you're doing already. But I will offer my opinion anyways. Keep the stuff that you have a contractual obligation to keep, and maybe keep the things that a client might reasonably ask for in future. It's the nice thing to do. But be honest, don't keep bullshit that you are not legally obligated to keep, and which nobody will ever want to look at. Throw it out.
Also, try to avoid contracts that obligate you to keep things. That feels like a liability you don't need to carry.
These schmucks with five copies of every RAW file they've ever shot, one on a rotating series of hard disks shipped for security to a vault in Norway? Those guys? They're just throwing their pictures away in a very complex and expensive fashion. You really think they're gonna be able to find that one out of focus shot of a pileated woodpecker they took on their camping trip in Wisconsin, some time in the fall of either 2015 or 2016? Of course they can't. Even if they could, they're not going to spend the hour digging around through 8 possible different hard drives that sit on a shelf. These people aren't even camera enthusiasts, they're storage enthusiasts, and they suck at storage.
When you post something on Facebook or Instagram, it is for all intents and purposes gone in a couple of days. Sure, your audience could laboriously click back in time to it, but they're not going to. Every now and then Facebook will dredge up some of this jetsam under the banner of "8 years ago today" at which point it's visible, but meaningless.
By creating a system of hard disks and RAID arrays and secure offsite storage you are merely recreating this phenomenon at your own expense, and with great effort. The fact that the relevant bits are somewhere, in 5 copies, does not mean they're not gone. D.B. Cooper's mortal remains are somewhere too. Perhaps your pileated woodpecker is somewhere nearby?
Here is the alternative attitude to adopt: this is all ephemera, except for a few select things that I fix into my world in one way or another. There are a few dozen, perhaps a few hundred, photographs that I choose to live with, to have actively present in my life. Prints, books, electronic frames, coffee cups, whatever. Every now and then a small handful of the pictures I take makes it into that select group.
Everything else is trash, or if you prefer, is mayflies. Throw it all away.
You don't have to adopt this attitude, but it might pay you to roll it around your mouth and experiment with the taste, see if there's something there you can use.