Sun SPARC Enterprise Mx000 Servers : Logical System Board (LSB)

Asset ID:	1-71-1011446.1
Update Date:	2011-03-09
Keywords:

Solution Type Technical Instruction Sure

Solution 1011446.1 : Sun SPARC Enterprise Mx000 Servers : Logical System Board (LSB)

Applies to:

Sun SPARC Enterprise M4000 Server
Sun SPARC Enterprise M5000 Server
Sun SPARC Enterprise M8000 Server
Sun SPARC Enterprise M9000-32 Server - Version: Not Applicable to Not Applicable [Release: N/A to N/A]
Sun SPARC Enterprise M9000-64 Server - Version: Not Applicable to Not Applicable [Release: N/A to N/A]
All Platforms

Goal

This document is intended to give the reader a quick overview of the Logical System Board that is introduced on Sun SPARC(R) Enterprise M4000-M9000 platforms and to provide links to references to assist in understanding the LSB's impact on CPU and device numbering.

Solution

The Logical System Board (LSB) is a new concept introduced with the M4000-M9000 servers. When creating domains, Extended System board (XSB) resources are made available to a domain through the Domain Control List (DCL), the M4000-M9000 equivalent of a resource access list.

When the XSB resources are added to a domain's DCL, the resource is also assigned a Logical System Board (LSB) value where the assigned LSB value assigned has a direct impact on CPU and I/O device path numbering.

This information is not applicable to the M3000. The M3000 server defaults to LSB 00 and can not be changed.

The use of LSB's on the M4000-M9000 systems enables the domain administrator with the ability to assign XSB resources to locations that were previously occupied by other XSB resources without changing CPU numbering and I/O device paths.

For detailed information on the LSB impact on CPU numbering, refer to <Document 1005329.1>: Sun SPARC Enterprise Mx000 Servers: Processor numbering and decoding CPU location.

For additional information on the LSB impact on the M4000 and M5000 systems Device Path numbering, refer to <Document 1002807.1>: Sun SPARC Enterprise M4000 and M5000 Server Device Paths.

For additional information on the LSB impact on M8000, M9000-32, and M9000-64 systems device path numbering, refer to <Document 1004116.1>: Sun SPARC Enterprise M8000 and M9000 Device Paths.

Furthermore additional information on configuring resources and LSB's is available in the Sun SPARC Enterprise M3000/M4000/M5000/8000/M9000 Server Administration Guide document body and Appendix A.

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