Eject CD-ROM on ESXi
Many of my friends, asked me to advise them that who can they eject CD-ROM on ESXi.
The below command may be useful for you as well:
eject /dev/cdrom/mpx.*
This is worked for me and hope works for you.
Bu if you have access to server management web based portal, turning on UID LED is better way to identify your server physically.
Work for me as well.