We're about to replace a bunch of kit (servers, SAN etc.) and migrate our servers across from their current platform.
Our file server has around 8tb of data on it right now, spread across 5 LUNs (all on the same SAN mind you).
To my mind the pro's of multiple LUNs mainly come down to "what if" things, such as file restores, impact of file system corruption, and the con's are allocation of space i.e. I might have 500gb free on one LUN but no space free on the LUN where I need it.
How would you do it and why?