External drives

Vegasears, not even close to being over kill. You don't need to use a raid 1 for a music setup when you only use 1tb disks. The reason is that 1tb is pretty small for a disk, tb2 or greater is about right. Also, using raid 1, it provides a means to keep running while 1 drive fails. If you were running a business, then you need to use raid 1 or more like a raid 10 or raid 5 setup. In your case, if you would use both drives as a raid 0 which would stripe the data over both drives and give you 2tb of disk space, then all you would need is another 2 or 3tb external disk for a backup using time machine, which backs up your system every hour and consolidates your backups. I have restored my system a couple time throughout the years and have helped friends and it is so easy using time finder. You do a couple clicks, walk away, and in a couple hours, everything is restored.
I have 3 external FireWire disks, 2-2tb and 1-3tb. I use 2 of them for the music and 1 for backup. I then use the 3tb disk to backup my system once a month and then I take this drive and store it in a fire proof safe. So if something happens to the house or you get your computer stolen, I still have all my critical data and music in my safe.
Also, when using externL disks on a Mac, make sure you encrypt your disks before using them with a long password. My password is over 25 characters using numbers and special characters. The reason I do this is if you get your stuff stolen, nobody can hook up the drive and see your data.
BTW, I work with large storage systems for databases so I user all the different raid setups in my daily job.

I have 2 Raid10 setups. Both have 8 3tb drives, 4 drives would have to fail (2 in each half) at the same time to loose data. Even if half the system had a catastrophic failure my data would be in tact. You do cut stage capacity in half but IMHO it is well worth it. The setup cost about the same as a good cartridge or a set of cables. I store both movies and audio. Will be adding another shortly as Blue Rays take lots of space.

Rbstehno, Thanks for the education. I am not a computer/tech person so your comments are appreciated. I do have a Safe and after reading your post, I've moved my backup music drive into it, along with the my data backup drives. The Safe has a 1.5 hour fire rating!