Fiber Channel is a technology for transmitting data between computer devices similar to SCSI but with networking components based on fiber optics. Fiber Channel is especially suited for attaching computer servers to shared storage devices and for interconnecting storage controllers and drives. Apple uses Fiber Channel for Xsan, it’s storage virtualization platform. All of the objects that make up a Fiber Channel network are referred to as the fabric. These typically include HBAs (the card that goes in a machine), cabling, transceivers, a fiber channel switch and the fiber channel controllers on the storage.