Hi all, FYI there is at least one Fujitsu CP400i firmware version that allows a direct disk access (JBOD): 03.25.05.10
if you have Secure Boot disabled:
reboot server, wait until "press Ctrl+R" message from RAID controller appears on the screen, and press Ctrl+R.
delete all virtual drives on the main page "VD Mgmt" (I hope you understand that it will destroy all your data)
open third page "Ctrl Mgmt" and tick the box "Enable JBOD"
open second page "PD Mgmt" and press F2 on every disk, and choose "Make JBOD"
reboot, enjoy direct access to hard drives
if you have Secure Boot enabled:
reboot server, open BIOS, go to Advanced and look for "AVAGO MegaRAID <PRAID CP400i> Configuration" at the bottom of the list.
open it, go to Main Menu -> Controller Management -> Advanced Controller Properties -> JBOD Mode -> make it "Enabled"
then go back and delete the virtual drive (I hope you understand that it will destroy all your data) and make all physical disks as JBOD in Main Menu -> Drive Management
reboot, enjoy direct access to hard drives
(if anyone knows how I could dump the firmware from the controller then I could share it)