I/O Drawer Pcie Configuration And Cabling Rules - IBM Power 750 Technical Overview And Introduction

2.9.3 12X I/O Drawer PCIe configuration and cabling rules
The following sections offer details about the disk drive configuration, 12X loop and SPCN
cabling rules.
Configuring the disk drive subsystem of the FC 5802 drawer
The 12X I/O Drawer PCIe, SFF disk (FC 5802) can hold up to 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. The 12X I/O Drawer PCIe
has four SAS connections to drive bays. It connects to PCIe SAS adapters or controllers on
the host systems.
Disk drive bays in the 12X I/O drawer PCIe can be configured as one, two, or four sets. This
way allows for partitioning of disk bays. Disk bay partitioning configuration can be done with
the physical mode switch on the I/O drawer.
Remember: A mode change, using the physical mode switch, requires power cycling of
the I/O drawer.
Figure 2-19 indicates the mode switch in the rear view of the FC 5802 I/O drawer and shows
the configuration rules of disk bay partitioning in the PCIe 12X I/O drawer. There is no specific
feature code for mode switch setting.
PCIe 12X I/O Drawer – SFF Drive Bays
SWITCH
Figure 2-19 Disk bay partitioning configuration in 12X I/O Drawer PCI (FC 5802)
Tools and CSP: The IBM System Planning Tool supports disk bay partitioning. Also, the
IBM configuration tool accepts this configuration from IBM System Planning Tool and
passes it through IBM manufacturing using the Customer Specified Placement (CSP)
option.
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IBM Power 750 and 760 Technical Overview and Introduction
FC 5802 12X I/O Drawer
AIX/Linux
MODE
• One set: 18 bays
1
• Two sets:
2
• Four sets:
4
IBM i
• Two sets:
9 + 9 bays
5 + 4 + 5 + 4 bays
9 + 9 bays