Weekend Learning: Exadata Energy Storage Module approaching end-of-life

I talk quite a bit about being on Exadata, but I rarely get to deal directly the hardware or architecture so the article ""Energy Storage Module Is Approaching End-of-life" error message via ASR or remote monitoring" found in My Oracle Support note 1583496.1 led me to learn something about Exadata.  The Energy Storage Module associated with the flash cards is actually designed to be replaced after several years, depending on which type of Exadata machine you have, but this note shares the fact that it can be misreported as needing replacement.  If you don't know how to check this, visit the note and try it out for yourself!