TABLE 1-1Basic DR Terms

Term

Definition

 

 

Unconfigure

To unconfigure a system board in the Solaris OS.

Reserve

To reserve a system board such that it is assigned to or unassigned

 

from a domain on the next reboot or power-cycle.

Install

To insert a system board into a system.

Remove

To remove a system board from a system.

Replace

To remove a system board and then mount it or a new system board,

 

for system maintenance and inspection.

 

 

TABLE 1-2Terms Related to Hardware Configurations

Term

Definition

 

 

CPU/Memory board

Unit equipped with a CPU module, and memory. High-end servers

unit (CMU)

only.

Motherboard Unit

Unit for midrange servers. A CMU is mounted on this board.

(MBU)

Midrange servers only.

I/O board unit (IOU)

Unit equipped with a PCI card and a disk drive unit.

Physical System

The PSB is made up of physical components, and can include 1 CMU

Board (PSB)

and 1 IOU or just 1 CMU. In midrange servers, the CMU is mounted

 

on a MBU. A PSB also can be used 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.

eXtended System

The XSB is made of physical components. In the XSB, the PSB can be

Board (XSB)

either one complete unit (undivided status) or divided into four

 

subunits. The XSB is a unit used for domain construction and

 

identification, and also can be used as a logical unit.

Logical System Board

A logical unit name assigned to an XSB. Each domain has its own set

(LSB)

of LSB assignments. LSB numbers are used to control how resources

 

such as kernel memory get allocated within domains.

 

 

1-4SPARC Enterprise Mx000 Servers Dynamic Reconfiguration User’s Guide • September 2007