4-28 SPARC Enterprise Mx000 Servers XSCF User’s Guide • January 2012
Caution – IMPORTANT - An XSCF reset or failover might prevet the above setting
operation from completing. If a reset or failover occurs during the operation, log in
to the active XSCF to determine if the operation succeeded. If not, try it again. For
details on DR, see the Dynamic Reconfiguration User’s Guide.
4.9 Displaying State of an External I/O
Expansion Unit and Administration
This section describes the management overview of an External I/O expansion unit
connected to the server, components in the External I/O Expansion Unit such as I/O
boards, link cards, and power supply units (PSUs), and downlink cards mounted in
PCI slots in the server, and cards that contain Energy Storage Modules (ESM) and
are attached to the host system.
Note – For the hardware configuration of an External I/O Expansion Unit, see the
External I/O Expansion Unit Installation and Service Manual or the Service Manual for
your server. For details and examples of use of commands, see the XSCF Reference
Manual and the ioxadm(8) man page.
TABLE 4-4 lists terms used in External I/O Expansion Unit administration.
TABLE 4-4 External I/O Expansion Unit Administration Terms
Term Description
Host path Device path. A device name and device number are used to represent the
layer location of a component in the component layer structure.
(Example: IOU#1-PCIE#4)
Downlink card
path
A downlink card that is mounted in a PCI slot in an I/O unit of the
server and connected to an External I/O Expansion Unit. An External
I/O Expansion Unit is connected to one or two downlink cards. A
downlink card path represents the layer location indicating which
downlink card is connected to the External I/O Expansion Unit in the
layer structure. (Example: IOU#1-PCIE#2)
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