I/O Drawer Pcie And Pci-Ddr 12X Expansion Drawer 12X Cabling - IBM Power 710 Technical Overview And Introduction

Figure 2-21 5802 I/O drawer rear view location codes
Configuring the #5802 disk drive subsystem
The #5802 SAS disk drive enclosure can hold up 18 disk drives. The disks in this enclosure
can be organized in various configurations depending on the operating system used, the type
of SAS adapter card, and the position of the mode switch.
Each disk bay set can be attached to its own controller or adapter. Feature #5802 PCIe 12X
I/O Drawer has four SAS connections to drive bays. It connects to PCIe SAS adapters or
controllers on the host systems.
For detailed information about how to configure the #5802 disk drive subsystem, see the IBM
Power Systems Hardware Information Center at:
http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/index.jsp
2.10.3 12X I/O drawer PCIe and PCI-DDR 12X Expansion Drawer 12X cabling
I/O drawers are connected to the adapters in the CEC enclosure with data transfer cables:
12X DDR cables for the #5802 and #5877 I/O drawers
12X SDR or DDR cables, or both, for the #5796 I/O drawers
The first 12X I/O Drawer that is attached in any I/O drawer loop requires two data transfer
cables. Each additional drawer, up to the maximum allowed in the loop, requires one
additional data transfer cable. Note the following information:
A 12X I/O loop starts at a CEC bus adapter port 0 and attaches to port 0 of an I/O drawer.
The I/O drawer attaches from port 1 of the current unit to port 0 of the next I/O drawer.
Port 1 of the last I/O drawer on the 12X I/O loop connects to port 1 of the same CEC bus
adapter to complete the loop.
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IBM Power 710 and 730 Technical Overview and Introduction