HP StoreOnce 4900 (44TB) and (60TB) Capacity Expansion guide

Rear view of the HP StoreOnce 4900 Backup
Figure 2 Rear view of the head server
RAID card 1, port 2, connects to Drawer 2, IO Module B Port 2 in the first disk enclosure1.
RAID card 1, port 1, connects to Drawer 1, IO Module A Port 1 in the first disk enclosure2.
RAID card 2, port 2, connects to Drawer 2, IO Module B Port 2 in the second disk enclosure3.
RAID card 2, port 1, connects to Drawer 1, IO Module A Port 1 in the second disk enclosure4.
Figure 3 Rear view of the disk enclosure
Drawer 2, IO module A2.Power supply1.
Drawer 2, IO module A, Port 24.Drawer 2, IO module A, Port 13.
Drawer 1, IO module A6.Power supply5.
Drawer 1, IO module A, Port 28.Drawer 1, IO module A, Port 17.
Drawer 1, IO module B, Port 210.Drawer 1, IO module B, Port 19.
Power supply12.Drawer 1, IO module B11.
Drawer 2, IO module B, Port 214.Drawer 2, IO module B, Port 113.
Power supply16.Drawer 2, IO module B15.
6 Capacity Expansion Overview