So there needs to be more details to fully answer the question. PC or Mac? Where did you setup the RAID array? If you did it in the motherboard bios on a PC, no, it's not removable. If it's done in Windows or MacOS, as software RAID, and you're moving it to a computer of the same OS, you 'could' be ok. Still, back it up before you do anything.
Since you're moving things any way, do what you can do get out of this RAID setup. If you're doing it for speed, get a SSD or for more speed, a NVMe drive. Doing it for size, 8tb drives are common enough, and 10tb is pretty cheap (under $500 a drive, so $50/tb). RAID isn't backup, though RAID1 pairs are a nice way to protect yourself from a drive failure.
Good luck,
-Joe