Not quite.
Unless you've configured your ESXi hosts to write log files somewhere else, by default it'll write to the local datastore. If you've been booting your hosts off SD cards, your log files get written to a ramdrive due to the failure rate of SD cards that get lots of writes. (Ask anyone who runs a hand full of Raspberry Pis about media failure...)
VMWare, at one point, declared that installing and booting off SD cards would no longer be allowed for ESXi 7, which was walked back after a lot of outrage. It's still planed for a 'future version', probably 8 or a dot release of 8. (which is why I was rather annoyed that the new servers we just bought did not have any local drives on them...)
Biting the hand that feeds IT
