I see this question popping up all the time, literally twice a day on our VMware internal slack, can I boot ESXi from an SD card while placing OSDATA on my SAN? I guess people are confused after reading this article. It is probably a result of skim-reading as the article is in-depth and spells it out to the letter. If you look at the following table then it mentions FCoE and iSCSI:

However, FCoE, iSCSI, and FC would only be supported when you boot from SAN, only then is OSDATA supported on a SAN device. When you boot from USB/SD, OSDATA will need to reside on a locally attached device. In other words, the answer to the original question is: no you cannot boot ESXi from an SD card and place OSDATA on your SAN. Again, for details, read this excellent document.



Frank, Johan, and I have been working on this for a few months already, but today I can finally share that a brand new podcast series will be out soon. This bi-weekly podcast (released on Monday) is titled “Unexplored Territory“. We will be discussing topics such as public cloud, virtualization, cloud-native applications, Kubernetes, end-user computing, storage, business continuity, and important (VMware-based) emerging technologies with industry/subject matter experts.