I am looking into a large external hard drive for DV tape capture. I know that the CAMCORDER has to be connected to the computer by firewire, not USB, to capture without dropping frames, but does the hard drive I capture to also need to be firewire? Will USB work or is it too slow? Or does the HD need to be SCSI for higher speed? Anything else on the HD specs I should check (read/write speed?) to find a suitable drive?