IBM pSeries 690 Service Manual page 59

RIO and RIO-2 Cabling Rules
If the CEC RIO ports are standard RIO, thumbscrew-style connectors, then connect a two-planar I/O loop
to the RIO ports of the CEC in the following order:
1. Primary I/O Book Slot 0 (1, 2, 3, or 4 MCMs): RIO 1 A0&A1, RIO 2 B0&B1
2. Secondary I/O Book Slot 2:
v 2 MCMs: RIO 3 C0&C1, RIO 4 D0&D1
v 3 or 4 MCMs: RIO 3 C0&C1, RIO 4 D0&D1, RIO 5 A0&A1, RIO 6 B0&B1
3. Secondary I/O Book Slot 3 (4 MCMs): RIO 7 C0&C1, RIO 8 D0&D1
Notes:
1. Secondary I/O Book Slot 1 is not allowed with CEC standard RIO connections.
2. One I/O planar loops are not allowed with CEC standard RIO connections.
If the CEC RIO ports are gigabyte RIO, or RIO-2, connectors, then connect either a one I/O planar loop or
a two planar I/O loop to the first 16 RIO ports of the CEC in the following order:
1. Primary I/O Book Slot 0 (1, 2, 3, or 4 MCMs): RIO 1 A0&A1, RIO 2 B0&B1
2. Secondary I/O Book Slot 2:
v 2 MCMs: RIO 3 C0&C1, RIO 4 D0&D1
v 3 or 4 MCMs: RIO 3 C0&C1, RIO 4 D0&D1, RIO 5 A0&A1, RIO 6 B0&B1
3. Secondary I/O Book Slot 3:
v 2 MCMs: RIO 5 A0&A1, RIO 6 B0&B1
v 3 or 4 MCMs: RIO 7 A0&A1, RIO 8 B0&B1
Although two I/O planar loops are not permitted on the last 12 RIO ports of the CEC, you can connect
additional one I/O planar loops to the next 12 RIO ports of the CEC in the following order:
1. Secondary I/O Book Slot 3 (4 MCMs): RIO 9 C0&C1, RIO 10 D0&D1
2. Secondary I/O Book Slot 1:
v 3 MCMs: RIO 9 C0&C1, RIO 10 D0&D1, RIO 11 A0&A1, RIO 12 B0&B1
v 4 MCMs: RIO 11 C0&C1, RIO 12 D0&D1, RIO 13 A0&A1, RIO 14 B0&B1
Note: Use required pairs of RIO ports without omitting any.
The following RIO port speeds are available:
v Standard RIO uses a thumbscrew retention physical connector and runs at 500 MB per second.
v Gigabyte RIO, or RIO-2, uses a bayonette retention physical connector and runs at 1 GB per second.
Two I/O planars are available, one for RIO and one for RIO-2, that may be placed in either side of an I/O
subsystem. They can be identified by their RIO connector style.
Rules for connecting RIO and RIO-2 CEC ports to I/O subsystem RIO and RIO-2 ports are the following:
v CEC RIO ports must not be connected to I/O subsystem RIO-2 ports, even with the available RIO-2 to
RIO cables.
v RIO-2 to RIO cables must only be used to connect CEC RIO-2 ports to I/O subsystem RIO ports.
v RIO to RIO cables must only be used to connect CEC RIO ports to I/O subsystem RIO ports.
v RIO-2 to RIO-2 cables must only be used to connect CEC RIO-2 ports to I/O subsystem RIO-2 ports.
Rules for connecting RIO and RIO-2 I/O planars to the CEC RIO and RIO-2 ports are the following:
v CEC RIO ports must be connected to 2 RIO planars per loop. Up to 8 I/O subsystems can be
connected.
Chapter 1. Reference Information
43