Thanks for checking. As it was omission, I will manually update the firmware then.
We got an advisory for an urgent firmware upgrade for ST14000NM013G and ST16000NM010G drives to ESL5. Of which, we have 144 in R740XD2 chassis, all running ESL3 firmware. As yet, this doesn't show up in Openmanage. When I went looking for the firmware update on the Dell site, it lists dozens of servers as being affected, but the R740XD2 is conspicuously missing.  Does anyone know if the R740XD2 really doesn't need this drive firmware applied, or has it just been left off the list (hence Openmanage doesn't offer to upgrade the drives)?  
R740XD2 and ESL5 Drive firmware