After taking a look at this question Does Thunderbolt support a net topology like FireWire?
I was wondering how FireWire works when it's daisy-chained with multiple devices between a Mac on each end of the chain?
How does this work in the external drive case? For example, you have the following setup between two Macs running OS X normally. Note that the hard drive is switched off at first:
Mac 1 <-----FireWire-----> Ext HardDrive <-----FireWire-----> Mac 2
What happens when the hard-drive is turned on in between the two Macs? Does it connect to both, race condition to 1 of the 2, fail connect to any or does it do something else.
Best Answer
Found the solution, and that is that both system will mount the drive simultaneously in a potentially data corrupting manner.
Source: Macintouch Reader Reports FireWire: Connecting Drive to Two Computers
Turns out it is not a good thing to do, may cause data corruption, according to the same source.