Don't get over exited about Thunderbolt. If you look at bandwidth of the various connections, Thunderbolt is better than eSATA and USB3, but far off from SFF.
Connection | Bandwidth per connection |
|---|---|
| Thunderbolt | 10 Gbps |
| SATA 6G | 6 Gbps |
| eSATA 6G | 6 Gbps |
| USB3 | 5 Gbps |
| SAS 3.0 SFF | 48 Gbps |
| PCIe-2.0 (16x) | 32 Gbps |
| PCIe-3.0 (16x) | 64 Gbps |
If you consider 6 SFF connections on a single (2011) system versus a single Thunderbolt connection, you see the difference.