I noticed today while setting up a new system that the disk as represented by
/dev/disk/by-id also had a WWN link that I was not familiar with:
My research suggests that this is a "World Wide Number" or some kind of unique ID to the drive. What is the use case for this and when would it be appropriate to use it versus the drive's other represented ID, serial number, and UUID (from
Links to documentation for this WWN identifier would also be useful. I'm getting a lot of hits on fiber channel stuff on Google. Is this a related use case or something else entirely?