I can't comment from direct experience as I use a Pegasus R4, but a buddy had issues with the elegato...wouldn't mount etc. He took it back, go another, same issues, so option one might be better for you.
If you want to spend more for reliable super-fast bulk storage, this is mine:
http://www.google.co.uk/products/ca...UJOvFKXJ0AX6-4DwBw&ved=0CFIQ8wIwAA#ps-sellers
They are available directly from Apple, but the are a lot more expensive.
The LaCie Little Big Disk Thunderbolt Series has worked well for me (http://www.lacie.com/us/products/product.htm?id=10549). It's one of the cheapest Thunderbolt RAID units you can buy. The only problems with this drive are: you may need to purchase a $50 Thunderbolt cable because some models don't come with one in the box, it requires a power adapter (it's not very portable), and it has a very loud fan (which I actually removed).
Another good option is the LaCie Rugged USB 3.0 Thunderbolt Series (http://www.lacie.com/us/products/product.htm?id=10599). It's bus powered, it comes with a USB 3.0 cable and a Thunderbolt cable, and it doesn't have a noisy fan. This is probably the most utilitarian Thunderbolt drive you can get, but it's not as fast as a RAID unit like the Little Big Disk.
The SSD will be faster than the two-disk HDD RAID.thanks
I visit the lacie website and I saw the thunderbolt RAID unit
do you think a RAID lacie with 2 disk 7200/tr get better data rate than a lacie ruged with SSD and no RAID ?
The SSD will be faster than the two-disk HDD RAID.
Sounds like a good plan. The Samsung 840 is one of the best SSDs out there right now.ok
I think I will take the rugged and change the SSD inside by a 256Go samsung 840