
Chapter 2 Setting Up XSCF 2-143
In the M3000 server, you cannot perform the operations such as setting the domain
configuration, or adding or deleting the system board. Domain has been configured by
default and cannot be changed. However, you can set the configuration policy and display the
domain information.
For an overview of the domain and the system board, see the Overview Guide for your
server. Also, for an overview of the components, see the Service Manual for your server.
TABLE 2-23 lists terms used in Domain Configuration.
TABLE 2-23 Domain Configuration Terms
Term Description
Domain When hardware resources in the server are logically divided into one or more units, each set of
divided resources can be used as one system, which is called a domain. An Oracle Solaris OS can
operate in each domain.
PSB The PSB is made up of physical components, and can include 1 CMU (CPU/Memory Board unit)
and 1 IOU (I/O unit) or just 1 CMU. In the M4000/M5000 servers, the CMU is mounted on the
MBU. A PSB can also be used as to describe a physical unit for addition/deletion/exchange of
hardware. The PSB can be used in one of two methods, one complete unit (undivided status) or
divided into four subunits. However, in the M3000 server, the PSB can be used in one complete
unit (undivided status) only.
Note - On the M4000/M5000 servers, 1 PSB is 1 CMU. In an M4000 server, a PSB makes up the
entire MBU. In an M5000 server, there are two PSBs on the single Motherboard unit (one PSB
contains CPUs 0 to 3 and the other PSB contains CPUs 4 to 7).
In the M3000 server, a PSB makes up the entire MBU. There is only one PSB, which contains
CPU, I/O, and memory. The PSB cannot be divided into four subunits.
XSB The XSB is made of physical components. In the XSB, the PSB can be either one complete unit
(undivided status) or divided into four subunits. The XSB is a unit used for domain construction
and identification, and can be also used as a logical unit.
LSB A logical unit name assigned to an XSB. Each domain has its own set of LSB assignments. LSB
numbers are used to control how resources such as kernel memory get allocated within domains.
System board The hardware resources of a PSB or an XSB. A system board is used to describe the hardware
resources for operations such as domain construction and use. In this manual, the system board
refers to the XSB.
Uni-XSB One of the division types for a PSB to be configured. Uni-XSB is a name for when a PSB is
logically only one unit (undivided status). It is a default value setting for the division type for a
PSB. The division type can be changed by using the XSCF command, setupfru(8). Uni-XSB
may be used to describe a PSB division type or status.
Quad-XSB (Note 3) One of the division types for a PSB to be configured. Quad-XSB is a name for when a PSB is
logically divided into four parts. The division type can be changed by using the XSCF command,
setupfru(8). Quad-XSB may be used to describe a PSB division type or status.
Hardware resource Hardware components contained on a system board that configures a domain.
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