Guessing the [Wayback] Run ESXi from a USB Flash Drive: A How-To-Guide by just the abstract does not show the value enough:
A USB flash drive can be used not only for installation media – you can also run ESXi from USB flash drives or SD flash cards and boot from these devices.
In fact, the article shows way more, including:
- how the partitions on USB/SD devices are built as compared to HDD devices, and how they even differ depending on USB/SD sizes
- how to backup/restore the USB/SD boot devices (so you can stock them in case of failure)
This is very important, because every now and then, these USB and SD devices fail (see for instance [Wayback] Solved: Remount boot filesystem on a running system. – VMware Technology Network VMTN), so knowing what to do then is key and helps handling errors like this one:
Lost connectivity to the device mpx.vmhba32:C0:T0:L0 backing the boot filesystem /vmfs/devices/disks/mpx.vmhba32:C0:T0:L0. As a result, host configuration changes will not be saved to persistent storage.
A every useful article for my link archive!
Related: ESXi: storing an ISO 8601 time-stamped backup tarball locally
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