VMware

Question re: ESXi 7 host in “degraded” mode booting from 16GB flash drive

Recently upgraded one vSAN host from ESXi 6.7u3 to 7.0 via Lifecycle Manager, and noticed a warning/error on the summary screen:

No coredump target has been configured. Host core dumps cannot be saved.”

A bit of googling leads me to believe that this is because ESXi is installed on a 16GB flash drive, and as of 7.0, ESXi wants a 32GB permanent (*read: non-USB*) partition in order to write the core dumps. Is that correct?

The physical hosts are Intel NUCs, and since they run vSAN, both their m.2 and SATA slots are occupied with capacity and cache storage.

So in this situation am I just fated to have the coredump warning forever (since I can’t add more internal disks), or would ESXi be placated if I upgraded the USB boot drives to 32 / 64 /128 GB units?


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