HP 1032 HP High Performance Clusters LC 1000 Series Cabling Guide - Page 78

Appendix A: Cabling Rules for LC Clusters, Numbering and Cable Labeling Rules

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A Cabling Rules for LC Clusters HP factory-configured LC clusters are built according to these guidelines for numbering, labeling, and populating LC clusters. The guidelines are included in this document as reference information for customers who are customizing or upgrading existing LC clusters. Numbering and Cable Labeling Rules Racks-Racks are numbered 1 to n and from left to right. The racks are labeled "Rack n," where n is the rack number. Cable labels include the rack number and are labeled "Rn," where n is the rack number. Servers-Servers are numbered from 1 to n and from bottom to top in each rack. Labels on cables connected to the servers include "Sn," where n is the server number in the rack. Switches-Switches are numbered from 1 to n and from bottom to top in each rack. Labels on cables connected to the switches include "SWn," where n is the switch number in the rack. Switch Modules (modules, line cards)-Labels on cables connected to the modules use the hardware markings with an "M" designator. If the hardware marks a module "A" or "1," then the cable labels refer to the modules as "MA" or "M1," respectively. For modules without markings on the hardware, the labels on the cables connected to the modules include "Mn," where n is the module number. The module numbering starts at 1 and increases from left to right and then bottom to top. Ports-Labels on cables connected to the ports use the hardware markings, if available, or use "Pn," where n is the port number, if the ports are numbered. For example, if the hardware marks ports with "iLO," "NIC1," or "1," then cable labels refer to these ports as "iLO," "NIC1," and "P1," respectively. Labels on cables connected to ports with no markings on the hardware include "Pn," where n is the port number. The numbering starts at 1 and increases from left to right and then bottom to top. This port numbering applies to servers, PCI cards with multiple ports, and switches. Some hardware, such as a server, can have different types of unlabeled ports. A server may have multiple serial ports, NIC ports, and multiple USB ports, for example. Labels on cables connected to these ports refer to them by their function and number instead of generically labeling all ports from 1 to n. For example, "SER," "NIC1," "NIC2," "USB1," and "USB2." If there is only one port on a device, such as a PCI card, n is not used. It is labeled with the device name, such as "PCI." HP High Performance Clusters LC 1000 Series Cabling Guide A-1

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A
Cabling Rules for LC Clusters
HP factory-configured LC clusters are built according to these guidelines for numbering,
labeling, and populating LC clusters. The guidelines are included in this document as
reference information for customers who are customizing or upgrading existing LC clusters.
Numbering and Cable Labeling Rules
Racks
—Racks are numbered 1 to n and from left to right. The racks are labeled “Rack n,”
where n is the rack number. Cable labels include the rack number and are labeled “Rn,”
where n is the rack number.
Servers
—Servers are numbered from 1 to n and from bottom to top in each rack. Labels on
cables connected to the servers include “Sn,” where n is the server number in the rack.
Switches
—Switches are numbered from 1 to n and from bottom to top in each rack. Labels
on cables connected to the switches include “SWn,” where n is the switch number in the rack.
Switch Modules (modules, line cards)
—Labels on cables connected to the modules use the
hardware markings with an “M” designator. If the hardware marks a module “A” or “1,” then
the cable labels refer to the modules as “MA” or “M1,” respectively. For modules without
markings on the hardware, the labels on the cables connected to the modules include “Mn,”
where n is the module number. The module numbering starts at 1 and increases from left to
right and then bottom to top.
Ports
—Labels on cables connected to the ports use the hardware markings, if available, or
use “Pn,” where n is the port number, if the ports are numbered. For example, if the hardware
marks ports with “iLO,” “NIC1,” or “1,” then cable labels refer to these ports as “iLO,”
“NIC1,” and “P1,” respectively.
Labels on cables connected to ports with no markings on the hardware include “Pn,” where n
is the port number. The numbering starts at 1 and increases from left to right and then bottom
to top. This port numbering applies to servers, PCI cards with multiple ports, and switches.
Some hardware, such as a server, can have different types of unlabeled ports. A server may
have multiple serial ports, NIC ports, and multiple USB ports, for example. Labels on cables
connected to these ports refer to them by their function and number instead of generically
labeling all ports from 1 to n. For example, “SER,” “NIC1,” “NIC2,” “USB1,” and “USB2.”
If there is only one port on a device, such as a PCI card, n is not used. It is labeled with the
device name, such as “PCI.”
HP High Performance Clusters LC 1000 Series Cabling Guide
A-1