I/O Device Mapping - Sun Microsystems Sun SPARC Enterprise M3000 Administration Manual

I/O Device Mapping

I/O device paths are dictated by which LSB the I/O unit is assigned to.
Entry-level servers have one I/O controller. The XSB is assigned four PCIe slots.
Midrange servers have only one I/O controller on the I/O unit (IOU). For an XSB in
Uni-XSB mode, all I/O is on XSB#xx-0. For an XSB in Quad-XSB mode, internal
resources, the PCI-X slot, and two PCIe slots are on XSB#xx-0, and two PCIe slots are
on XSB#xx-1.
High-end servers have two I/O controllers; therefore, each XSB can have two PCIe
slots assigned to it.
TABLE A-2
used in I/O device mapping on the server.
TABLE A-2
LSB Number
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
100 SPARC Enterprise Mx000 Servers Administration Guide • August 2009
shows the LSB numbers and the corresponding device path values that are
LSB Numbers and Device Path Values
Device Path Value
No value
1
2
3
4
5
6
7
8
9
a
b
c
d
e
f