@fuchsiii you really should consider investing in a cheap case and 2,5" hot swap drive bays...
@fuchsiii also you propably should consider using at least #DUP, #RAID6 / #ZRAID2 or #mdraid10 (in redundant striping configuration)...
https://en.wikipedia.org/wiki/Non-standard_RAID_levels#DUP_profile
https://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_6
https://en.wikipedia.org/wiki/ZFS#ZFS's_approach:_RAID-Z_and_mirroring
https://en.wikipedia.org/wiki/Linux_MD_RAID_10
Or a file-based (de)duplication approach as well as a database similar to #LTFS indexes and #TapeLibraries do.
https://en.wikipedia.org/wiki/Linear_Tape_File_System
https://en.wikipedia.org/wiki/Tape_library
https://en.wikipedia.org/wiki/Hierarchical_storage_management
https://en.wikipedia.org/wiki/Amanda_(software)
@fuchsiii
IMHO as #Flash prices continue to fall faster than #HDD's can, you'll likely want to see something like the #NeoFloppy:
https://github.com/KBtechnologies/NeoFloppy/blob/main/neofloppy.specification.md
As it also allows for automatic and human-readable lables...
https://en.wikipedia.org/wiki/Tape_label
Basically you're having a very primitive #NearlineStorage setup there...
https://en.wikipedia.org/wiki/Nearline_storage
https://oxytodon.com/@fuchsiii/110429459135079058
Otherwise consider a real #backup server like #Proxmox Backup Server:
https://en.m.wikipedia.org/wiki/Proxmox_Backup_Server
@fuchsiii comsidering the fact that you're looking for a cheap sotrage medium with few writes yet virtually no seek time, it may be possible to achiveve competitive pricing per TB close to scalable Tapes using cheap #eMMC-based #flash similar to cheap #microSD cards.
As you'd be generally satisfied with USB 3.0 & SATA-6G speeds, that should be feasible and considered a low-effort #NeoFloppy design...
https://en.m.wikipedia.org/wiki/MultiMediaCard#eMMC