HP Cluster Platform Hardware Kits v2010 User manual

HP Cluster Platform
Myrinet Interconnect Rack Kit Installation Guide
Part Number: AA-RW5UA-TE
June 2004
This document describes how to install the Myrinet interconnect rack kit into an HP
Cluster Platform using the HP Model 10642 rack. This kit is designed to support a Myrinet
interconnect with a 3U (5-slot) chassis or a 5U (9-slot) chassis. Larger models of Myrinet
interconnect require a different kit with a ventilating baffle.
Hewlett-Packard Company
Palo Alto, California

© Copyright 2004 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice. The only warranties for HP products and
services are set forth in the express warranty statements accompanying such products and services. Nothing herein
should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors
or omissions contained herein.
Printed in the U.S.A.

Myrinet Interconnect Rack Kit Installation
Guide
1Audience
This guide is intended for HP service representatives and other persons trained
to install hardware mounting options and system components in the HP 10642
rack. Such persons are expected to understand the hazards of working in this
environment and of taking suitable precautions to minimize danger to themselves
and to others.
2Documentation Resources
You can download the documentation for components referenced in this installation
guide from the following locations:
• HP 10642 rack:
http://h18004.www1.hp.com/products/servers/proliantstor-
age/racks
(Select the menu option titled 10000-series rack and open the Documentation
option on the web page menu.)
• HP Cluster documentation:
http://docs.hp.com/linux/onlinedocs/4807/index.html
3Verifying the Kit Contents
The kit contains the following components:
• A pair of rails that you mount on the columns of the rack.
• A pair of left and right retainer brackets that you mount on the Myrinet
chassis. These brackets slide onto the rails.
•The fasteners, as specified in Table 1.
Table 1: Rail Kit Fasteners
Qty Size Type Torque Description
12 M6 x 16 mm Machine
screw 30 in/lb Longer Phillips (Posidrive) pan-head. Use with cage nuts.
12 M6 Nut N/A Cage nut for rack column square holes. Use
with M6 x 16-mm machine screw.
46-32 x .375 in Machine
screw 30 in/lb Small pan-head screw used to attach the retainer bracket to the interconnect chassis.
4M6 x 12 mm Machine
screw 30 in/lb Shorter Phillips (Posidrive) pan-head used to lock the retainer bracket to the rail.
• Packaging and documentation.
Contact your HP sales representative if any parts are missing.
Myrinet Interconnect RackKit Installation Guide 1

4Orienting the Components
The kit hardware consists of a pair of rails and a pair of left and right retainer
brackets, which are described in the following sections.
4.1 Rail
The two rails are identical, and one rail is shown in Figure 1. The rails are
mounted on the rack columns by the four holes in the vertical surface identified by
callout 1. The rail’s horizontal surface (callout 2) supports the interconnect chassis.
Figure 1: Rail
1
2
4.2 Retainer Brackets
The retainer brackets are shown in Figure 2.
Figure 2: Retainer Brackets
X
Y
3
Right Retainer
Bracket
Left Retainer
Bracket
When attaching the brackets, be aware that their designation of left and right is
in reference to their location on the rear of the switch chassis, not in reference to
the rack columns. Figure 2shows the following details, which are referenced
in the installation procedure:
1. Threaded inserts (callout 1).
2. Holes for the screws that attach the bracket to the interconnect chassis
(callout 2).
2Myrinet Interconnect RackKit Installation Guide

3. Channel that slides on to the rack-mounted rail, and the direction of insertion
(callout 3).
5Preparing for Installation
To install the kit, you require the following resources:
• Tools:
- A 6-inch long #1 (small) Phillips (Posidrive) screwdriver.
- A 6-inch long #2 (medium) Phillips (Posidrive) screwdriver.
- Cage-nut insertion tool (optional).
To prevent screws from becoming loose because of vibration, HP recommends
that you use an adjustable torque driver set to the torque specifications given
in Table 1.
• Environment:
- A work surface adjacent to the installation rack.
- A small work platform or stable stepladder or step stool.
- Personnel – HP recommends that two people are available to lift and install
the interconnect onto its rail.
6Identifying the Installation Location
Each 1U rack location is numbered 01–42 from the bottom to the top and is marked
on the rack columns. At each rack location, there are three square mounting holes,
which are identified as top, middle, and bottom. A fastener location is specified as
10–middle, meaning the middle hole of rack position 10.
The installation location depends on the configuration rules for your cluster. (See
Section 2for information about where you can obtain documentation resources).
Each component occupies a specific rack location so that the cabling is correct, and
the rack locations of each component are defined in the cluster documentation. For
ease of reference, mark the positions for fasteners with tape or a marker pen.
You can use this kit with both 3U and 5U Myrinet interconnects. The most common
location for these interconnects is at rack position 0, at the very bottom of the rack.
(This installation guide shows the interconnect installed at rack position 0, using
the 0–middle and 0–top mounting holes.)
7Installing the Rail
Working from the rear of the rack, install the left rail as shown in Figure 3.
Myrinet Interconnect RackKit Installation Guide 3

Figure 3: Attaching the Rail to the RackColumns
Front Left
Colum
Rear Left
Column
M6 x 16MM M6 Cage
Nut
1. Locate the marked mount location.
2. Clip a cage nut into the back of the middle and top holes of both the front and
rear columns, using a total of four nuts.
3. Using a #1 Phillips screwdriver, secure the rail to the rack columns with a
M6 x 16-mm pan-head screw.
4. Repeat steps 1–3 for the right rail.
8Installing the Retainer Brackets
Attach the retainer brackets to the interconnect chassis as shown in Figure 4.
_______________________ CAUTION _______________________
Use only the specified screws. Screws that are too long might penetrate
the switch chassis and damage internal components.
4Myrinet Interconnect RackKit Installation Guide

Figure 4: Attaching the Left Retainer Bracket to the Interconnect Chassis
Rear of Interconnect
Chassis
Left Retainer
Bracket
1
2
1. Identify the two screw hole locations, as shown in Figure 4. Depending
on which type of interconnect you are installing, use the following mount
locations:
a. To attach the bracket to a 5U (9-slot, 64-port) interconnect, use the screw
location indicated by callout 1. (The top round hole in the bracket.)
b. To attach the bracket to a 3U (5-slot, 32-port) interconnect, use the screw
location indicated by callout 2. (The elongated hole in the middle of the
bracket.)
2. Use a #1 Phillips screwdriver to secure the retainer bracket to the interconnect
chassis with 2 6-32 x .375 in Phillips screws.
3. Repeat steps 1 and 2 for the right retainer bracket.
9Inserting the Chassis Into the Rack
You insert the interconnect chassis from the rear of the rack, with its front panel
(the connection ports) facing the rear of the rack, as shown in Figure 5. (All
cabling is done at the rear of the rack.)
_______________________ WARNING ______________________
The HP 10642 rack is tall. To avoid injury, always use two people
and a stable, elevated work platform to lift any components at a high
position in the rack.
Myrinet Interconnect RackKit Installation Guide 5

Figure 5: Inserting the Interconnect Chassis into the Rack
Rear of Rack
X
Y
1. Locate and mark the rear column mounting locations as follows:
a. To attach the bracket to a 5U (9-slot, 64-port) interconnect, position the
fasteners at locations 1-middle and position 5-middle.
b. To attach the bracket to a 3U (5-slot, 32-port) interconnect, position the
fasteners at locations 1-middle and position 3-middle.
2. Insert an M6 cage nut into the back of the rack at each fastener location,
using a total of four cage nuts.
3. Lift and align the interconnect so that the retainer brackets are level and
square with the rails, as shown in Figure 6.
Figure 6: Aligning the Retainer Bracket with the Rail
Rear Right Rack
Column
Left Retainer Bracket
4. Slide the interconnect chassis in until its front brackets stop against the rear
rack columns. (Callout 1in Figure 5identifies the left front bracket.)
5. Using a #2 Phillips screwdriver and two M6 x 16-mm pan-head screws per
bracket, secure each front bracket to the cage nuts that are mounted on the
rack columns (see callout 2in Figure 5). Use atotal of four screws and
tighten the screws to their specified torque.
10 Securing the Chassis to the Rail
Working at the front of the rack, secure the interconnect chassis to the rail, as
shown in Figure 7.
6Myrinet Interconnect RackKit Installation Guide

Figure 7: Securing the Chassis to the Rail
M6 x 12mm
Screw
Front Left
Rack Column
Rear of Interconnect
Chassis
1. Using a #2 Phillips screwdriver and two M6 x 12-mm pan-head screws secure
the left retainer bracket to the rail through the threaded inserts in the bracket.
2. Repeat step 1 for the right retainer bracket, using a total of four screws.
Tighten the screws to their specified torque.
11 Removing the Interconnect for Servicing
Bring the cluster to an appropriate state for switch component removal and put the
rack into a safe and stable state for component removal.
_______________________ WARNING ______________________
The HP 10642 rack is tall. To avoid potential injury, always use two
people and a stable, elevated work platform to remove components
from a high rack elevation.
1. At the rack’s power distribution unit (PDU), power off the circuit that supplies
power to the interconnect. Disconnect the power cable at the rear of the
interconnect chassis.
2. If necessary, mark the high-speed network cables to ensure that they can be
reconnected to their respective ports.
3. Disconnect and remove each high-speed network cable bundle until all ports
are unplugged. Secure the cables out of the interconnect’s removal path.
4. Depending on whether you are performing a complete disassembly or only
replacing a defective chassis, perform one of the following steps:
a. Disassemble the installation
Use a #2 Phillips screwdriver to remove the four M6 x 12-mm Phillips
pan-head screws that secure each retainer bracket to the rail. The bracket
remains attached to the interconnect chassis (see Figure 7).
b. Replace a chassis
Use a #1 Phillips screwdriver remove the four 6-32 x .375 in Phillips
pan-head screws that secure each retainer bracket to the chassis. The
bracket remains attached to the rail (see Figure 4).
5. Remove the two M6 x 16-mm pan-head screws from each front bracket (see
Figure 5, callout 1).
6. Slide the interconnect chassis all the way out of the rack.
Myrinet Interconnect RackKit Installation Guide 7

Carefully retain all screws for reuse if the interconnect chassis is to be remounted
or if it is replaced. Use only the 6-32 x .375 in Phillips pan-head screws to attach
the retainer brackets to the chassis. Use of incorrect screws might damage internal
components.
8Myrinet Interconnect RackKit Installation Guide