// Cloudflare Blog · 1 June 2026

How we reduced core unit boot time from hours to minutes

We investigated why firmware updates were causing our core servers to take four hours to reboot. By diving into UEFI data structures and iPXE automation, we eliminated unnecessary timeouts and cut boot times back down to minutes.

Cloudflare Blog

@cloudflare-blog · Giovanni Pereira Zantedeschi

blog.cloudflare.com

Cloudflare Blog@cloudflare-blog