[Daniel Levy]

HI Ben,

There are a few options that might help.

Netstor have a Thunderbolt Rack-mount in a 16 or 24 setup. The 24 Bay allows a Mac mini to be integrated into the back panel and utilises it as a SAN device.
Both Setups are currently TB1 but will be fully upgradeable to TB2 using a newer interface card and a firmware update.
The Areca Raid card used in the Netstor device allows SAS Expansion.

There are also a few devices on the market that allow Thunderbolt to PCIE Expansion allowing older storage devices to be connected to the Macs Thunderbolt inputs.

If you feel any of the above to be relevant or want to discuss it further I’m happy to talk you through some options.