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Can I boot ESXi from an SD card while placing OSDATA on my SAN?

Duncan Epping · Nov 16, 2021 ·

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.

Related

Server 7.0, boot, esxi, sd, usb, vSphere

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Comments

  1. Iwik says

    18 November, 2021 at 10:08

    It is shame, USB device support was changed without any long term warning or preparation somewhere during 7 update.

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About the Author

Duncan Epping is a Chief Technologist in the Office of the CTO in the Cloud Infrastructure Business Group (CIBG) at VMware. Besides writing on Yellow-Bricks, Duncan co-authors the vSAN Deep Dive book series and the vSphere Clustering Deep Dive book series. Duncan also co-hosts the Unexplored Territory Podcast.

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