86 IBM Power 770 and 780 (9117-MMD, 9179-MHD) Technical Overview and Introduction
A minimum configuration of two 12X cables (either SDR or DDR), two AC power cables, and
two SPCN cables is required to ensure proper redundancy.
Figure 2-23 shows the rear view of the expansion unit.
Figure 2-23 PCI-X DDR 12X Expansion Drawer rear view
2.10.2 12X I/O Drawer PCIe
The 12X I/O Drawer PCIe is a 19-inch I/O and storage drawer. It provides a 4U-tall (EIA units)
drawer containing 10 PCIe-based I/O adapter slots and 18 SAS hot-swap small form factor
disk bays, which can be used for either disk drives or SSD (FC 5802). The adapter slots use
blind-swap cassettes and support hot-plugging of adapter cards.
A maximum of two drawers can be placed on the same 12X loop. The 12X I/O drawer
(FC 5877) is the same as this drawer (FC 5802) except that it does not support any disk bays.
Drawer FC 5877 can be on the same loop as drawer FC 5802. Drawer (FC 5877) cannot be
upgraded to a drawer that contains the disks also, that is, drawer FC 5802.
The physical dimensions of the drawer are 444.5 mm (17.5 in.) wide by 177.8 mm (7.0 in.)
high by 711.2 mm (28.0 in.) deep for use in a 19-inch rack.
A minimum configuration of two 12X DDR cables, two AC power cables, and two SPCN
cables is required to ensure proper redundancy. The drawer attaches to the host CEC
enclosure with a 12X adapter in a GX++ slot through 12X DDR cables that are available in
various cable lengths:
0.6 m (FC 1861)
1.5 m (FC 1862)
3.0 m (FC 1865)
8 m (FC 1864)
The 12X SDR cables are not supported on this drawer.
12X Port 1
(P1-C7-T2)
P1-C8-T3 P1-C1
P1-C2
P1-C3
P1-C4
P1-C5
P1-C6
12X Port 0
(P1-C7-T1)
E1
E2
SPCN 0
(P1-C8-T1)
SPCN 1
(P1-C8-T2)
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