I just got a new 27" iMac with 500 GB SSD drive (OSX 10.9.1). I'm keeping the bulk of my data (video, music, photos) in an 4TB Thunderbolt drive. It's a Promise Pegasus J4 with four 1TB 2.5" drives configured as Striped RAID. I also have a 4TB Lacie d2 Thunderbolt drive I want to use for backup. I'd like to backup the Pegasus drive to the Lacie. What's a good program to use? I've never used Time Machine; is that a good choice or should I stay away from it? In addition, I plan to setup Arq to backup to Amazon Glacier. For other day-to-day files, which don't amount to much disk space, I'm going to use Jungle Disk. I have Jungle Disk on several computers and I'm very happy with it.