HP LC Series, Руководство по установке и настройке, Страница: 14 / 19

•
Switch-to-switch connections are routed through the sides of each rack.
•
Server- to-interconnect switch connections will be routed down from the server to the
floor, over to the rack with the switch, and then up from the floor to the switch. If a
Myrinet cluster was ordered, care must be taken when routing the fiber Myrinet cables to
prevent cable damage. The minimum bend radius, or the smallest internal radius possible
on a corner or bend, is 1.5 inches (3.81 cm).
Each HPC reference design includes a 20-foot (6.196 m) cable to connect the control node’s
Gigabit Ethernet NIC to the LAN. It also includes a 20-foot (6.196 m) cable to make the iLO
port connection. These cables are not labeled and are not shipped in a rack, but are included
in the cluster accessories packaging. Refer to the cabling wiring diagrams in the cabling
guide for more information.
IMPORTANT: Refer to the HPC LC Series cabling guides for LC 1000, LC 2000, and LC 3000 for
details on the power and network cabling connections, cable label nomenclature, wiring diagrams, and
rack layouts for each HPC LC Series solution.
The cluster reference designs assume you will be connecting the control node of your HPC
LC Series solution to an external DHCP server for setup. The DHCP server must be provided
by the customer and be made available to the system before proceeding to use iLO on the
control node. It is also assumed that you are planning to use the control node as a DHCP
server for the other cluster components. Refer to the server’s iLO documentation shipped
with the cluster for more information.
Power Cabling
Each 24A or 32A PDU shipped in the reference design LC Series solutions is comprised of
one PDU Control Unit supporting up to four eight-receptacle Extension Bars (power strips).
You will notice in your solution that some Control Units are not installed with all four of the
Extension Bars, and that not all eight receptacles of each Extension Bar are used. This is to
avoid current overload of the PDU or Extension Bar. General guidelines for these
components are to limit each Extension Bar to five or fewer components and each PDU to 14
or fewer components.
Each Extension Bar has its own breaker switch. Furthermore, the PDU Control Unit has one
breaker switch for each Extension Bar. The factory installs the Control Units in a 0U
orientation and sets the breaker switches on the Control Unit to On but sets the breaker
switches on the individual Extension Bars to Off.
Before plugging in the main power cable of each PDU Control Unit to the power source,
check each Extension Bar to make sure that the breaker switch is set to Off. Once you have
verified the breakers are Off then connect to the power source.
14 HP High Performance Clusters LC Series Setup and Installation Guide