What type of raid do I need for media?

I currently have 2 st2000dm001 2tb drives in raid 0 and Im scared to lose all my movies and data on them. I was wondering what type of raid I should use for storage only? My boot drive is an ssd

Raid 0 gives you a 4GB drive Raid 1 will give you 2 copy's of your data on identical 2TB drives. http://www.tomshardware.co.uk/forum/259807-14-raid

Like sminlal said.

Well, according to the Google study on hard drive failure rates a particular hard drive has very roughly a 5% chance of failing during any given year. Since RAID-0 with two drives is twice as likely to suffer a failure, we can guess that its chance of failure will be around 10% in a given year.

Is that "often"? It depends on how precious your data is, I guess.

For storage only, you really shouldn't use RAID 0 or 1. Use RAID5 with 3 or more drives for some level of data redundancy, RAID6 for even more redundancy.

Using Mirror RAID as a backup strategy is just bad, as it actually increases your drive failure rate and doesn't protect against corruption issues - like sminlal said, you're better just having an "active" drive and a "backup" drive. Leave the backup drive offline, except when "backing up" data to it. It's really not the same as having a backup, because you're uninsulated against data corruption, but at least you have a second copy of your data somewhere if the active hard drive catches fire or something.