While doing a reboot double check for OS preparedness in prevision of switching labstore service to labstore1002, the server refuses to boot.
It hangs in POST while initializing the PERC, right after enumerating the internal H700 and before any mention of the external H800 controller. No error messages or diagnostic are visible on the console beyond the simple hang (in particular, it does not report the 72 drives as it normally does at that point).