Whichever way you go, if you have the choice of selecting and purchasing drives avoid Seagate unless you get the enterprise Exos, some say Ironwolfs are good but I personally won't use them, if you go WD get Red Plus (no Reds), and you cannot go wrong with HGST the best drives IMO, with helium filled He, owned by WD today.
If you go DAS is fine just be aware that when you implement RAID, hardware raid that is you are binded to the controller, if the controller dies and you cannot get an exact replacement you won't be able to read the content.
Someone suggested qnap, is a good alternative but I had my troubles with it and also with synology.
The users who suggested backups are right on track, you could use just two separate enclosures with 2 drives one active and one for backups, very simple but should work.
Unless you have a very very resilient solution with RAID 6 or something similar like Zfs filesystems RaidZ2 and such which you won't most likely don't get cheap consumer grade drives and try to stick with the ones listed above, if you are bothered by noises of the drives (don't know how close your drives are to your listening room) let me know and I will recommend something specifically to keep noise down, HGST are silent operating but tend to be "clickety" on acces, the reds plus are fine.
If you go DAS is fine just be aware that when you implement RAID, hardware raid that is you are binded to the controller, if the controller dies and you cannot get an exact replacement you won't be able to read the content.
Someone suggested qnap, is a good alternative but I had my troubles with it and also with synology.
The users who suggested backups are right on track, you could use just two separate enclosures with 2 drives one active and one for backups, very simple but should work.
Unless you have a very very resilient solution with RAID 6 or something similar like Zfs filesystems RaidZ2 and such which you won't most likely don't get cheap consumer grade drives and try to stick with the ones listed above, if you are bothered by noises of the drives (don't know how close your drives are to your listening room) let me know and I will recommend something specifically to keep noise down, HGST are silent operating but tend to be "clickety" on acces, the reds plus are fine.