HP XP External Storage Software - Manual (Page 182)

microprogram version 4.000 or later
• Array type: EVA4000/6000/8000
microprogram version 5.031 or later
To replace the EVA array's microprogram, check whether the alternate path's behavior changes as
a result of changing the microprogram version. If the alternate path's behavior changes, perform
External Storage XP's Delete LU operation to release the setting for the EVA array volume's mapping
before you actually replace the microprogram.
See the EVA array manuals for more information how the alternate path's behavior changes.
Notes on connecting external arrays 182