I inherited an environment where there was no LUN masking or proper zoning. With that said, I need to identify the correct LUNs that are presented to a particular server. I see 6 LUNs if I run "fdisk -l" One of these LUNs is the "new" one I added but of course I can't tell which one it is since the sizes are the same. I guess the easiest thing to do is to remove the LUN and see which one disappeared but who knows if the order of the partition changes (i.e. from sde to sdf?).
Another question, i noticed the server has /dev/sdg and /dev/sdf and they are identical, I know because I was able to mount both and show identical data. Why is that?