External enclosure that supports RAID1?

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[quote mattkime]RAID 1 is for uptime. There a number of ways that your data can be corrupted where a RAID 1 won't protect you. Simply using a dual drive enclosure and doing two separate backups would be safer from a backup standpoint.
It is for backup, but I wont have a lot of time to spend on copying files to two locations... I was hoping for something more automated.

Maybe I can find a way via freeware or Automater that I can just copy the files to a folder on one drive, and that will automatically copy it over to the other drive.