RAID is great when it works, but can be difficult to setup properly for non IT administrators. A NAS with built in RAID is a good option, but you do pay extra for this.
Another option for safety is just to pop in another drive that's the same capacity as your music drive, and just setup a daily job in windows to backup the drive. Not as technically fancy as a RAID, but no need to buy or manage hardware or software RAID controllers, which can also fail.
Another option for safety is just to pop in another drive that's the same capacity as your music drive, and just setup a daily job in windows to backup the drive. Not as technically fancy as a RAID, but no need to buy or manage hardware or software RAID controllers, which can also fail.