Från http://www.2ndwave.com/firewire.asp som av någon anledning klassas som osäker av Google:
Can I daisy-chain with FireWire drives or do I need a hub, like with USB?
As with SCSI, FireWire is a daisy-chainable technology. All FireWire products (and nearly all FireWire devices) have two FireWire ports and either port can be used for connecting to the host computer or connecting another FireWire device. While FireWire hubs (often referred to as repeaters) are available, they are typically only used when attaching large numbers of devices simultaneously, or with devices that only have one FireWire port (such as digital cameras).
How many FireWire devices can I attach to my computer?
The IEEE-1394 standard for FireWire sets a limit of 63 FireWire devices per computer. When connecting directly to your computer, there should be no more than 16 cable lengths between the computer's FireWire port and the last FireWire device.
How long can my FireWire cable be?
Without using a FireWire Hub or Repeater the maximum recommended cable length is 4 meters between devices.
Are FireWire drives hot swappable?
Yes, with the following recommendations:
Never unplug any FireWire device that is being actively accessed by the operating system (such as a file copy).
Unplugging a device while it is being used may result in a system crash and the loss of the ability to recover the data already written to the drive.
If you want to unplug a FireWire disk drive you must first drag the mounted drive icon to the trash to dismount it. After the drive is dismounted then it can be unplugged.
If using a CD creation utility or backup software, it is recommended that you exit the application before disconnecting the device.
Can multiple computers share my FireWire drive at the same time?
No. The Mac operating system does not have the ability to share the drive between users simultaneously.
Can I add multiple FireWire devices?
Yes. Simply hook up the device cable to an unused port, either on your computer or the second port at the back of your FireWire drive. Keep in mind some devices such as digital cameras only have one FireWire port, so they must be at the end of a chain. You do not need to worry about device addresses or device termination.
Known Limitations and Issues (FireWire):
Do not connect more than 63 devices (including computers) at one time.
Do not connect devices so that any two devices have more than 16 cables directly between them.
Do not connect FireWire cables in a way that forms a ring of devices. Do not plug both ends of one cable into the same device.
Unused FireWire connections should be left empty. There are no terminators for FireWire connections.
Connect devices that require power from FireWire directly to the computer.
