SPB Unmanaged and 2 Disks Failed

Hi

I have an old CX3-10 in production, and have 2 failed disks in the LUN 0 (RAID5):

Bus 0 Enclosure 0 Disk 1 [FC;4Gbps;133,68GB] - The state is "Removed"

Bus 0 Enclosure 0 Disk 3 [FC;4Gbps;133,68GB] - The state is "Removed"

I got it the two faulty disk in a german broker and my questions are:

Can I make an hot repalcement without any problems?

They are any totorial to do the hot replacement correctly?

The machine have 2 SP. the SPA works correctly, but the SPB marks as unmanaged. Is safe to reboot the SPB, conected in SPA? As i read in the comunity, some firmware for the SP's are in this RAID, so i need to rebuild the first disk (Dirsk 1), and after this rebuild que second (Disk 3) and after that the SPB became accessible?

I can ping SPB.

 

Thanks for any help