I want an SSD and I want a second hard drive to back the HD of my mid 2011 i5 Mini. My initial thoughts were to get a Samsung 840 SSD (126gb) with a 1TB external HDD, then I thought 2 or 3 TB would be greater future proofing for not a lot more money. I then came across the Seagate external HDD go flex FireWire that is set up for backing up the Mini and my laptop, which would be useful. The final option seems to tick the boxes and that is the Seagate SSHD which I guess is like the Apple Fusion Drive but only 750gb. The SSHD would need to replace the original HD and have the OS on the new drive and then I could back up the new drive to the old? What are your thoughts on the three options - I'm not sure I need a large SSD just for the OS most of the storage needs are for nearly 200gb of music and then photos and video. Thanks in advance.