User Service Guide, Fifth Edition - HP 9000 rp4410/4440

NOTE: In simplex mode, both hard disk drives in slot 0 and slot 1 are driven by SCSI
channel A. When the duplex board is installed, the slot 1 hard disk drive is now driven by
SCSI channel B. If HP-UX was previously installed and whole disk vxfs was not used, the
system no longer boots.
Figure 3-37 Installing the Duplex Board
3. Secure the duplex board to the disk drive cage by the bracket and to the SCSI backplane by
the SCSI connector sockets. (Figure 3-37)
Installing Additional Components 99