>"For just 10TB, I would recommend that most home users stay away from RAID and buy 3 Seagate 10TB drives (street price currently $399 each) for total of ~$1200. Use 1 drive as primary copy and the 2 others as backups. With 3 drives, you could even rotate the 2 backups to an offsite location."
And how do you plan to detect if your data is silently corrupted? Unless you're using some archive file format that includes checksums/hashes, you have no way of knowing whether your backups are any good until it's too late.
Your tone makes it sound like silent RAID corruption doesn't happen. That's not true, even for NAS appliances like Synology.[1]
If you meant that a filesystem like ZFS with checksum blocks is designed to protect itself agains corruption errors, one can use that without RAID. A single-disk ZFS is orthogonal to RAID.
To point back to the OP's question, he's running Windows with Plex. In that case, a 10TB NTFS filesystem with periodic binary comparisons/checksums (or format the disk with the newer ReFS[2] that stores checksums similar to ZFS) is simpler than RAID5/6. He also gets the extra benefit of an offsite backup without paying for cloud storage.
I'm not against RAID for all cases but a home media computer with just 10TB doesn't meet the threshold of dealing with its extra complexity. However, if one is wanting to consolidate 25TB+ of disk space -- or running a business -- or need aggregated io bandwidth, the cost/benefit drivers for RAID over JBOD would make more sense.
And how do you plan to detect if your data is silently corrupted? Unless you're using some archive file format that includes checksums/hashes, you have no way of knowing whether your backups are any good until it's too late.