Nothing Like The SAN

First, we have the old SCSI HBA drivers for pure SCSI Controllers, such as aic79xx.o for various Adaptec HBAs, advansys.o for ConnectCom Solutions, Inc drivers, etc.
The we have drivers for SCSI-over-something - SCSI over ide (ide-scsi.o), SCSI over USB (usb-storage.o for USB storage devices).
Fiber-Channel HBAs - In the last 2-3 years, the 2 major vendors of Fiber-Channel HBAs - QLogic and Emulex - open-sourced their drivers, and they are now a part of the standard kernel (qlaXXXX.o for QLogic, lpfcXXXX.o for Emulex)...
...althought you still often need to take the latest drivers from the vendor's site, to overcome various problems.

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