I have dell EMC ME5012 storage with 12 Hard disk (Dell Emc 16TB each).

I coonect it with sas hd mini cable (12GB) and i use hb830 raid card.

its connected directly to the server with sas cable, when i create raid5 and boot system its working normaly but

when i turn off the storage like 5 to 6 minute then turn on the unit, server not booting.its stuch on Initializing Firmware Interfaces but not boot.

i try to change other sever R910 but its just the same. stuck 0n Initializing UEFI. NOT BOOTING.

please if anyone have any solution.

thankyou