> Are disk identifiers important in Linux (CentOS)? [...] Last, > googling suggests there is confusion between disk identifiers > and partition UUIDs. I am specifically asking about the > former. That "disk identifiers" is not specific. Which one do you mean among disk serial numbers, disk WWNs, disk label identifiers? Also apart from partition identifiers there are also partition lavbels, MD set identifiers, MD member identifiers, and filetree labels and identifiers. Not all of these are present in every case. It may be interesting to have a look at the contents of the '/dev/disk/by-*/' directories. As to the importance of any of these it depends on which specific configuration goals you have. Each of them has some advantages and disadvantages.
