I heard that FireWire it is really common in industry and media related hardware like cameras, but... What about e-SATA? Isn't it common and highly used too? I mean as far as I know it's fast than FireWire 800 so I'm very curious about it.

kholaras wrote:While you may see them at the consumer level being used for similar things (say, external harddrive enclosures), the technologies that implement e-SATA vs Firewire are totally different. e-SATA is a way to connect drives, that's it.
Firewire can be used to get pretty fast connections to an external drive (theoretically USB is faster unless you're using Firewire 800, but it has a higher overhead and in practice comes out to be about the same either way) but it is usable for much more, especially in multimedia devices. Firewire's actually much more applicable for these systems because it is capable of isochronous transfers, ensuring that you have enough bandwidth to offload video from a video camera in realtime without having to worry about losing frames. USB bandwidth can be problematic and is prone to being fought over if you have a lot or a bad mix of devices.

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