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Chapter 1 System Overview 1-27
FIGURE 1-19 I/O Unit Locations in the M5000 Server
.
The I/O unit (IOU) is used in both the midrange servers. Refer to the SPARC
Enterprise M4000/M5000 Servers Service Manual for more information on the IOU.
The IOU houses the following:
■ Four PCIe 8 lane, short card slots (four upper slots)
■ One PCI-X short card slot (lowest slot)
The IOU holds cassettes that support four PCIe cards and one PCI-X card.
The PCIe features include a high-speed serial point-to-point interconnect. Compared
with conventional PCI buses, the PCIe data transfer rates are doubled.
Location Number Component Maximum Number per Server
1 I/O unit 2
1
1