Compaq ProLiant DL380 - G2 Server, Compaq ProLiant DL380 G 2 Deployment Manual

White Paper

March 2002
14UH-0701A-WWEN

Compaq Confidential - Need to Know Required

Compaq ProLiant DL380

Prepared by Industry Standard
Server Group

Compaq Computer Corporation

Contents

Executive Summary.....................1

Symbols in Text...........................3

Symbols on Equipment...............3

Server Warnings ..........................4

Rack Warnings.............................4

Where to Find Information..........5

Introduction..................................5

Power, Thermal, and Weight

Information.................................10

Power Distribution Units and

Power Cords ..............................11

Console Management

Systems......................................16

Planning Rack

Configurations ...........................19

Installation Procedures.............26

Appendix A −−−− Related

Documents .................................34

Appendix B −−−− Parts

Reference ...................................35

Appendix C – Power and

Thermal Budgeting....................38

Appendix D −−−− Connecting

Multiple Racks ...........................43

Generation 2 Server
High-Density Deployment in
Compaq Racks

Abstract: This white paper is intended for use as a planning guide
to expedite concentrated deployments of several



Compaq ProLiant
Use this white paper in conjunction with documents for the
ProLiant DL380 Generation 2 server and Compaq rack deployment
products. This paper is intended for Field Systems Engineers (FSEs)
and customers (IT managers, system managers, account managers,
and installers).

Executive Summary

Many business enterprises and service providers use network
infrastructure and web applications that work best on dedicated
servers. This creates the need to fit a large number of smaller servers
into existing server rooms and data centers. Compaq meets this need
with the density-optimized line of ProLiant servers such as the
ProLiant DL380 Generation 2 server. At a height of 2U each, up to
21 ProLiant DL380 Generation 2 servers can fit in a single Compaq
42U rack. While the ProLiant DL380 Generation 2 server has clear
space saving benefits, its compressed size presents new challenges
for rapid server deployment, as well as cable management and
environmental considerations.

DL380 Generation 2 servers in a Compaq rack.

Compaq engineers have developed innovations in rapid high-volume
deployment and improved cable management for large installations
of ProLiant DL380 Generation 2 servers. This white paper
introduces planning, power and thermal considerations, server and
rack requirements, and installation configurations. It also outlines the
products associated with high-volume deployment in Compaq rack
configurations.

IMPORTANT: This document discusses only the ProLiant DL380
Generation 2 server, the Compaq 7000- and 9000-series racks, and
related Compaq rack options. This document does not discuss other
Compaq servers or products or racks not manufactured by Compaq.

Compaq ProLiant DL380 Generation 2 Server High-Density Deployment in Compaq Racks 2

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Notice

Document Number 14UH-0701A-WWEN © 2001 Compaq Computer Corporation

Compaq, the Compaq logo, and ProLiant Registered in U.S. Patent and Trademark Office. All other
product names mentioned herein may be trademarks of their respective companies.

Compaq shall not be liable for technical or editorial errors or omissions contained herein. The information
in this document is provided “as is” without warranty of any kind and is subject to change without notice.
The warranties for Compaq products are set forth in the express limited warranty statements accompanying
such products. Nothing herein should be construed as constituting an additional warranty.

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Symbols in Text

The following symbols may be found in the text of this guide.

WARNING: Text set off in this manner indicates that failure to follow directions in the
warning could result in bodily harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow directions could
result in damage to equipment or loss of information.

IMPORTANT: Text set off in this manner presents clarifying information or specific
instructions.

Note: Text set off in this manner presents commentary, sidelights, or interesting points of
information.

Symbols on Equipment

The following symbols are located on equipment in areas where hazardous conditions may exist.

This symbol in conjunction with any of the following symbols indicates the
presence of a potential hazard. The potential for injury exists if warnings are not
observed. Consult the documentation included with the server for specific details.

This symbol indicates the presence of hazardous energy circuits or electrical
shock hazards. Refer all service to qualified personnel.

WARNING: To reduce the risk of injury from electrical shock hazards, do not
open this enclosure. Refer all maintenance, upgrades, and service to qualified
personnel.

This symbol indicates the presence of electrical shock hazards. The area contains
no user or field serviceable parts. Do not open for any reason.

WARNING: To reduce the risk of injury from electrical shock hazards, do not
open this enclosure.

This symbol on a RJ-45 receptacle indicates a Network Interface Connection.

WARNING: To reduce the risk of electrical shock, fire, or damage to the
equipment, do not plug telephone or telecommunications connectors into this
receptacle.

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This symbol indicates the presence of a hot surface or hot component. If this
surface is contacted, the potential for injury exists.

WARNING: To reduce the risk of injury from a hot component, allow the
surface to cool before touching.

Server Warnings

Adhere to the following guidelines when servicing or installing a Compaq server:

WARNING: To reduce the risk of electrical shock or damage to the equipment:

• Unplug the power cord from the system.

• Do not disable the power-cord grounding plug. The grounding plug is an important

safety feature.

• Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible
at all times.

CAUTION: To properly ventilate the system, provide at least 7.6 cm (3 inches) of
clearance at the front and back of the computer.

CAUTION: The system is designed to be electrically grounded. To ensure proper
operation, plug the AC power cord only into a properly grounded (earthed) AC outlet.

Rack Warnings

WARNING: To reduce the risk of personal injury or damage to the equipment:

• Do not attempt to move or relocate an equipment rack populated with servers. A fully
populated rack can weigh as much as 771 kg (1,700 lb). The rack may become
unstable and cause serious personal injury or equipment damage.

• Before installing the servers, extend the leveling jacks to the floor and rest the full
weight of the rack on the leveling jacks. Either install the stabilizer kit or couple
multiple racks together for stability.

• Always load the heaviest item first, and load the rack from the bottom to the top.
Loading in this manner makes the rack “bottom-heavy” and helps prevent the rack
from becoming unstable.

• Extend only one ProLiant DL380 Generation 2 server at a time. A rack may become
unstable if more than one ProLiant DL380 Generation 2 server is fully extended for
any reason.

CAUTION: Do not overload the AC supply branch circuit that provides power to the
rack.

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Note: Slide rails, power distribution units (PDUs), power cords, and cables can be preinstalled
into the rack in a build room or on the data center floor before moving the rack to its final
location.

Where to Find Information

Table 1. Where to Find Information

Section Description Where to Find

Introduction Explains the purpose and scope of this white paper and

Power, Thermal, and Weight
Information

Power Distribution Units and
Power Cords

Console Management Systems Discusses server management options Page 16

Planning Rack Configurations Discusses rack configuration issues Page 19

Installation Procedures Describes installation procedures Page 26

Related Documents, Appendix A Lists documents and websites that provide additional

Parts Reference, Appendix B Lists part numbers for all the components referred to in

Power and Thermal Budgeting,
Appendix C

Connecting Multiple Racks,
Appendix D

provides a glossary of terms

Lists important information about the
ProLiant DL380 Generation 2 server, Compaq racks,
PDUs, and related options to help choose a rack
configuration

Discusses specific PDU and power cord choices Page 11

information about Compaq racks, rack options, and rack
deployment of ProLiant DL380 Generation 2 servers

this white paper

Explains calculating power deratings Page 38

Discusses connecting multiple racks and lists rack
deployment options for 7000- and 9000-series racks.

Page 5

Page 10

Page 34

Page 35

Page 43

Table 2. Steps for High-Volume Server Deployment

Step Description

Step 1 Choose PDUs from Table 6.

Step 2 Determine the PDUs and related options from Table 12.

Step 3 Determine rack configuration. See examples on pages 22-24.

Step 4 Determine rail, console, and cable configurations. See the "Rack Management

Step 5 Install the ProLiant DL380 Generation 2 server. See the "Installation Procedures"

Systems" section on page 25.

section on page 26.

Introduction

Compaq designed the dense ProLiant DL380 Generation 2 server to meet the challenges
associated with deploying a high concentration of servers in a single rack. Compaq suggests that
customers evaluate their environments, power distribution, console, cable, and thermal
management choices well in advance to ensure the efficient deployment of multiple

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ProLiant DL380 Generation 2 servers in a rack. Use this document, in conjunction with the
documents listed in Appendix A,

as a guideline for planning rack configurations for high-volume

deployments of ProLiant DL380 Generation 2 servers.

The “Power Distribution Units” section outlines Compaq PDU choices best suited for building
rack configurations. This section provides technical specifications for high- and low-voltage
PDUs. It also describes how to allocate the correct number and type of PDUs for specific rack
deployments.

The “Planning Rack Configurations” section provides weight information for individual rack
components to help address floor support requirements. It also describes cable systems.

The “Console Management Systems” section provides information on server management
options.

All discussions of power requirements for ProLiant DL380 Generation 2 servers are based on the
input power of the server. This document uses the maximum rated power supply input of 575 W
for calculation purposes. However, derating the input power may be effective to:

• Minimize the number of PDUs required for each rack.

• Match the rack current requirements with the existing circuit breaker capacity.

• Match the rack cooling requirements with the existing facility cooling capability.

For more information about input power derating, see Appendix C.

IMPORTANT: In this document, derating the input power budget means using less than the
maximum rated input power values for the power supply. To derate the input power, see
Appendix C. Compaq strongly recommends that the derated power budget satisfies all the
installation requirements, including future upgrade plans.

Refer to the Compaq ProLiant DL380 Generation 2 Server QuickSpecs for detailed specifications
and options for the ProLiant DL380 Generation 2 server.

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References

Sources referenced in this paper are listed in Table 3.

Table 3. Sources of Information

Topic Where to Find

Information focal point for the Compaq
ProLiant DL380 Generation 2 server

Specifications, options, and a list of other Compaq
products and options compatible with the
ProLiant DL380 Generation 2 server

Installation and service guidelines for the
ProLiant DL380 Generation 2 server

Installation of vertical-mount PDU brackets and
Y-cables

Installation guidelines for the
ProLiant DL360 Generation 2 server in third-party
racks. (Contains information that applies to the
ProLiant DL380 G2 server.)

Installation guidelines for the
ProLiant DL360 Generation 2 server in
telecommunications (Telco) racks. (Contains
information that applies to the ProLiant DL380 G2
server.)

www.compaq.com/proliant

Compaq ProLiant DL380 Generation 2 QuickSpecs

Compaq ProLiant DL380 Generation 2 Setup and Installation
Guide, P/N 203844-001

Compaq ProLiant DL380 Generation 2 Maintenance and
Service Guide, P/N 203840-002

Vertical-Mount PDU Brackets kit, P/N 191265-B21

Vertical-Mount PDU Brackets with High-Voltage Cables kit, P/N
166097-B21

Compaq Ultra-Dense Server Deployment in Third-Party Cabinet
Racks, Document Number 12CU-0400A-WWEN

Third-Party Rack Cabinet kit, P/N 228894-B21

Compaq Ultra-Dense Server Deployment in
Telecommunications (Telco) Racks, Document number 12CZ­0400A-WWEN

Telco Rack kit, P/N 228892-B21

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Table 4. Notations for Optional Components

Notation Description

1x, 2x, 4x Number of components, for example, 1 x 128 MB means one 128-MB DIMM

1.13 GHz Intel Pentium III 1.13-GHz processor

1.266 GHz Intel Pentium III 1.266-GHz processor (when available)

128 MB 128-MB DIMM

256 MB 256-MB DIMM

512 MB 512-MB DIMM

HDD Hard disk drive

36-GB HDD

72-GB HDD (when available)

Hot-plug fan

Hot-plug power supply

Tape drive

SA5300 Smart Array 5300 Controller option (64-bit PCI card)

Remote Insight Lights-Out
Edition

Remote Insight Lights-Out Edition option (32-bit PCI card)

Glossary

1U – A rack unit (1U) is 4.45 cm or 1.75 inches in vertical dimension. The height of a device,

1U Integrated Keyboard/Mouse/TFT −−−− The TFT5600 RKM (rack-mount keyboard and

Flat Panel Display (FPD) – A Compaq TFT5010R (15-inch) flat panel monitor provides a large

High-voltage – AC line voltage of 200 V to 240 V. With higher voltage levels, a server can use a

In-Rack Keyboard – The 1U Rack Keyboard Drawer and the Internal Keyboard with Trackball

Keyboard/Video/Mouse (KVM) – KVM refers to a keyboard cable, a video cable, a mouse

(also known as form factor), can be expressed in rack units (Us). The ProLiant DL380
Generation 2 server is a 2U server.

monitor) is a 1U integrated keyboard and monitor. Its full 15-inch TFT active matrix display
provides flicker-free, quality display at viewing angles up to 120 degrees horizontally and
105 degrees vertically.

image size and exceptional screen performance in a space-saving 2U size that enables the
monitor to be neatly tucked away when not in use.

lower current and still meet its power requirements. Compaq recommends using a high­voltage source to support high-volume deployments of ProLiant DL380 Generation 2 servers
in a rack.

are designed to work together to save room in space-constrained, rack-mount environments.
The 1U Keyboard Drawer requires only half the Compaq rack depth and provides enough
space behind it to mount a Compaq Server Console Switch.

cable, or a switch. Some Compaq parts lists may refer to KVM switches as Server Console
Switches.

Local Console –A local console system interacts with a server using a set of KVM devices and

can be in-rack or off-rack. In this paper, in-rack local console refers to a flat panel display

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and a keyboard/trackball in the same rack as the servers. Off-rack local console refers to any
combination of a display, a keyboard, and a pointing device located outside of the rack. A
local console system does not use a network connection to interact with the server.

Low-Voltage – AC line voltage of 100 V to 120 V.

N.A. – North America, including U.S., Canada, and Mexico.

Network Interface Controllers (NICs) – Controllers that are embedded on the system board of

the ProLiant DL380 Generation 2 server.

Power Distribution Unit (PDU) – A PDU is a high-voltage or low-voltage device that is

equipped with circuit breakers that help prevent electrical surges and external equipment
malfunction by providing over current and surge protection for connected devices. See the
“Power Distribution Units” section of this paper.

Remote Console – A remote console is a server console system that uses a network connection to

interact with the server. This system enables any computer with appropriate software and
network access to control a server from anywhere across the globe. Compaq recommends
using the remote-console system for managing a large number of servers because it
eliminates the congestion of KVM cabling.

Remote Insight Lights-Out Edition – The Compaq Remote Insight Lights-Out Edition is

designed to provide remote access and control of Compaq ProLiant server products from
anywhere on the network with a standard web browser. Consequently, customers can deploy
a ProLiant DL380 Generation 2 server in a true “headless” fashion with a minimum of only
three cables per server: one power cord for the server, one network cable for the LAN
connection, and one network cable for the Remote Insight Lights-Out Edition management
LAN connection. Using the Remote Insight Lights-Out Edition, customers can deploy 21
ProLiant DL380 Generation 2 servers in a 42U Compaq rack with significantly fewer cables
than in a local console.

Server Console Switch – A device that enables multiple servers in a rack to be accessed and

managed by a single keyboard, mouse, and monitor. These switches are also known as KVM
switches.

Sliding Rail – A toolless rack management system designed for Compaq 7000- and 9000-series

racks that supports in-rack serviceability for ProLiant DL380 Generation 2 servers.

UID LED and Switch – The blue Unit Identification LED identifies the ProLiant DL380

Generation 2 server requiring service. A UID switch toggles both the front and rear UID
LEDs simultaneously.

Wake on LAN (WOL) – An option that enables a remote restart of the server.

For detailed information about the products in this glossary visit the Compaq website:

www.compaq.com

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Power, Thermal, and Weight Information

Power, thermal, and weight considerations are the most important parameters in high-volume
server deployment. Table 5 provides server parameters necessary to calculate the power needs,
thermal requirements, and total weight of a full rack of ProLiant DL380 Generation 2 servers.

Table 5. ProLiant DL380 Generation 2 Server Parameters

Dimensions H x W x D

8.64 x 65.45 x 44.45 cm (3.38 x 25.75 x 17.50 inches)

Server Weights

Minimum configuration: 1 x processor, 2 x 128-MB DIMM, 0 x CD-ROM drive, 1 x diskette
assembly, 0 x HDD, 5 x fans, 1 x power supply

Average configuration: 1 x processor, 4 x 256-MB DIMM, 4 x HDD, 1 x CD-ROM drive,
1 x diskette assembly, 5 x fans, 1 x power supply, 1 x Remote Insight Lights-Out Edition

Maximum configuration: 2 x processor, 6x DIMMs, 6 x HDDs, 2 x SA5300, 1 x CD-ROM drive,
1 x diskette assembly, 8 x fans, 2x power supplies, 1 x Remote Insight Lights-Out Edition

Component Weights

CD/diskette drive assembly 0.34 kg (0.75 lb)

DIMM 0.04 kg (00.1 lb)

HDD 0.86 kg (1.9 lb)

Remote Insight Lights-Out Edition 0.86 kg (1.2 lb)

SA5300 0.45 kg (1.0 lb)

Rack Rails and Hardware Weights

Cable arm 0.81 kg (1.8 lb)

Slide (2) 2.07 kg (4.6 lb)

Rail (2) 1.8 kg (4.0 lb)

Total Weight: 4.7 kg (10.4 lb)

Power Ratings

Maximum power supply rated input AC power

16.7 kg (37 lb)

21.2 kg (47 lb)

27 kg (60 lb)

115 V 575 W

240 V 545 W

Maximum system measured input AC power (per power calculator)

115 V 457 W

240 V 400 W

Maximum power supply rated input current

115 V 6.4 A

240 V 3.2 A

Maximum system measured input current (per power calculator)

115 V 3.8 A

240 V 1.7 A

continued

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Table 5. ProLiant DL380 Generation 2 Server Parameters (continued)

System Thermal Dissipation (per hour)

115 V 1,435 BTUs

240 V 1,363 BTUs

Relative Humidity (non-condensing)

Operating 10 to 90%

Non-operating 5 to 95%

The SA5300 option and the Remote Insight Lights-Out Edition option are PCI cards available
from Compaq. Any third-party PCI cards used in the ProLiant DL380 Generation 2 server must
comply with the industry-standard PCI specifications for dimension, weight, power, and thermal
requirements.

Power Distribution Units and Power Cords

Power Distribution Units

Compaq offers several PDUs designed for use in high-volume rack deployments. Compaq PDUs
are equipped with circuit breakers that help prevent electrical surges and external equipment
malfunction by providing over current and surge protection for connected devices. Compaq offers
a variety of PDUs that support both high-voltage and low-voltage applications. Table 6 lists PDU
options.

Table 6. Compaq PDUs

Part Number

207590-B21

207590-D71

207590-B31

207590-D72

207590-B23

continued

1

Availability

Worldwide High 16 A 5 IEC 320 C-20

North America
& Japan

International High 32 A 10 IEC 309-32A

North America
& Japan

North America High 40 A 12 Field wiring 12 x IEC 320-C13 2 x 10 A;

Input

Voltage

Current

Rating

Maximum

Servers per

PDU

Input

Connectors

and Cord

Low 24 A 3 NEMA L5-30P

High 24 A 7 NEMA L6-30P

12-ft cord

12-ft cord

2 × 12-ft cord

Output

Connectors

12 × IEC 320-C13 2 × 10 A 4.27 × 20.32 × 43.18 cm

12 × NEMA 5-15 4 × 15 A 4.27 × 20.32 × 43.18 cm

12 × IEC 320-C13 4 × 10 A 4.27 × 20.32 × 43.18 cm

12 × IEC 320-C13 4 × 10 A 4.27 × 20.32 × 43.18 cm

3 x 15 A

Output

Breakers

Dimensions

1.62 × 8.0 × 17.00 in

1.62 × 8.0 × 17.00 in

1.62 × 8.0 × 17.00 in

1.62 × 8.0 × 17.00 in

4.27 × 20.32 × 43.18 cm

1.62 × 8.0 × 17.00 in

Weight

3.15 kg
7 lb

4.5 kg
11 lb

4.5 kg
11 lb

4.5 kg
11 lb

6.4 kg
14 lb

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Table 6. Compaq PDUs (continued)

1

Part Number

191186-001

191186-B31

197616-B22

295363-001

295363-002

295363-003

295363-291

295363-B21

295363-B32

Note 1: These numbers are determined using a single power source (non-redundant).

Note 2: This PDU supports power from two different sources. If one power source fails, the PDU uses the alternate source.

Note 3: This PDU must be hard-wired to the power source by a certified electrician.

Note 4: This PDU requires Compaq Vertical Mount Bracket kit (PN# 191265-B21 or 166097-B21 with high-voltage Y-cables) to vertically mount
in rack side panel.

Note 5: This PDU is no longer being shipped by Compaq.

Availability

2

North America High 24 A 7 NEMA L6-30P

2

International High 30 A 9 IEC 309-32A

3

Worldwide High 40 A 12 Field wiring

4,5

North America Low 24 A 3 NEMA L5-30P

4,5

North America High 16 A 5 NEMA L6-20P

4,5

North America High 24 A 3 NEMA L6-30P

4,5

Japan Low 24 A 3 NEMA L6-30P

4,5

Worldwide High 16 A 5 IEC 320 C-20

4,5

International High 16 A 5 NEMA 309-16A

Input

Voltage

Current

Rating

Maximum

Servers per

PDU

Input

Connectors

2 × 12-ft cord

12-ft cord

12-ft cord

12-ft cord

12-ft cord

12-ft cord

and Cord

Output

Connectors

12 × IEC 320-C13 4 × 10 A 4.37 × 30.48 × 43.18 cm

12 × IEC 320-C13 4 × 10 A 4.37 × 30.48 × 43.18 cm

12 × IEC 320-C13
1 × DB9 Serial
1 × RJ-45

12 × NEMA 5­15R

12 × IEC 320-C13 2 × 10 A 5.03 × 25.15 × 48.97 cm

12 × IEC 320-C13 4 × 10 A 5.03 × 25.15 × 48.97 cm

12 × NEMA 5­15R

12 × IEC 320-C13 2 × 10 A 5.03 × 25.15 × 48.97 cm

12 × IEC 320-C13 2 × 10 A 5.03 × 25.15 × 48.97 cm

Output

Breakers

Dimensions

1.72 × 12.0 × 17.00 in

1.72 × 12.0 × 17.00 in

4 × 10 A 4.32 × 43.18 × 50.04 cm

2 × 15 A 5.03 × 25.15 × 48.97 cm

2 × 15 A 5.03 × 25.15 × 48.97 cm

1.70 × 17.00 × 19.70 in

1.98 × 9.9 × 19.28 in

1.98 × 9.9 × 19.28 in

1.98 × 9.9 × 19.28 in

1.98 × 9.9 × 19.28 in

1.98 × 9.9 × 19.28 in

1.98 × 9.9 × 19.28 in

Weight

9.1 kg
20 lb

9.1 kg
20 lb

6.4 kg
14 lb

5.4 kg
12 lb

3.6 kg
8 lb

5.4 kg
12 lb

5.4 kg
12 lb

5.4 kg
12 lb

5.4 kg
12 lb

In Compaq 7000- and 9000-series racks, the 295363-xxx PDU series must be installed vertically
in the rack side panels to prevent interference with the server rack rails. Compaq Vertical-Mount
PDU Bracket kits enable PDUs to be mounted vertically in the side compartments of 7000- and
9000-series racks. Compaq offers two Vertical-Mount PDU Bracket kits:

• Compaq Vertical-Mount PDU Bracket (P/N 191265-B21): This kit includes eight brackets
that support four PDUs. This kit works best with low-voltage applications that use the power
cord included with the server.

• Compaq Vertical-Mount PDU Bracket with High-Voltage Cables (P/N 166097-B21): This kit
includes 11 Y-cables and 4 brackets that support 2 PDUs. This kit works best with high­voltage, high-current PDUs. Using the Y-cables enables each power outlet on the PDU to
supply power for 2 servers.

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Figuring Type and Number of PDUs

The type and number of PDUs required to power a full rack of servers depends on each server’s
power requirement, the number of servers deployed in the rack, and the available power for the
servers.

Compaq PDUs support both high-voltage and low-voltage applications. The input current rating
for a ProLiant DL380 Generation 2 server is either 3.2 A at 200 to 240 volts or 6.4 A at 100 to
120 volts. To determine the number of servers supported by a PDU, divide the PDU’s current
rating by the server’s total input current rating.

IMPORTANT: The examples shown in the following sections use the maximum rating of the
power supply. They are for reference only.

Non-Redundant Power

The following examples illustrate how to calculate the number of servers per PDU when using
non-redundant power.

Example

One high-voltage PDU (P/N 207590-D72) has a current rating of 24 A. The server has a total
input current rating of 3.2 A at 200 volts.

24 A (PDU current rating) / 3.2 A (server total input current rating) = 7

This PDU can support a maximum of 7 servers at full server input current ratings.

Example

One low-voltage PDU (P/N 207590-D71) has a current rating of 24 A. The server has a total
input current rating of 6 A at 100 volts.

24 A (PDU current rating) / 6.4 A (server total input current rating) = 3

This PDU can support a maximum of 3 servers at full server input current ratings.

Redundant Power

The ProLiant DL380 Generation 2 server supports a redundant power supply. The power supply
for this server automatically senses input voltage level.

When using redundant power, it is necessary to use two PDUs per server. The following
examples illustrate how to calculate the number of servers per pair of PDUs when using
redundant power.

Example

Two high-voltage PDUs (P/N 207590-D72) have a combined current rating of 48 A. The
server has a total input current rating of 3 A at 200 volts (redundant power).

2 [24 A (PDU current rating) / 3.2 A (server total input current rating)] = 7

These PDUs can support a maximum of 7 servers at full server input current ratings.

Example

Two low-voltage PDUs (P/N 207590-D71) have a current rating of 48 A. The server has a
total input current rating of 6 A at 100 volts (redundant power).

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Compaq ProLiant DL380 Generation 2 Server High-Density Deployment in Compaq Racks 14

Compaq Confidential - Need to Know Required

2 [24 A (PDU current rating) / 6.4 A (server total input current rating)] = 3

These PDUs can support a maximum of 3 servers at full server input current ratings.

For more information on high-voltage PDUs, refer to the “Power Distribution Unit High-Voltage
Models for North America and International Use, (NA CPQ # 295363-002; INT'L CPQ #
295363-B31)” website:

www.compaq.com/products/servers

For more information on low-voltage PDUs, refer to the “Power Distribution Unit Low-Voltage
Models for North America and International Use” website:

www.compaq.com/products/servers

Selecting Server Power Cords

The appropriate server power cord to use depends on the cable management system installed in
the rack. Generally, the sliding rail cable management system requires a power cord that is

1.8288 m (6 ft) in length. This length provides enough slack for the power cord to route through

the cable management arm.

High-Voltage Y-Cables

The Vertical-Mount PDU Bracket with High-Voltage Cables kit includes 11 Y-cables, each of
which is 3.0 m (10 ft) long. The single-cord PDU section is 1.8 m (6 ft) long, and the dual-cord
server section is 1.3 m (4 ft) long. See Table 7 for part numbers.

Y-cables have a single-cord section with an IEC connector that connects to the PDU, a dividing
joint in the center, and a dual-cord section with IEC connectors that connect to the servers. One
Y-cable supplies power from the PDU to two ProLiant DL380 Generation 2 servers in the
standard configuration or one ProLiant DL380 Generation 2 server in the maximum
configuration.

CAUTION: When installing server power cords into the PDUs, ensure that the load is
balanced among the output circuit breakers. Do not exceed the ratings of the circuit
breakers.

Table 7. Compaq High-Voltage Power Cables

Description Compaq Part # Description

Vertical-Mount PDU Bracket with High­voltage Cables kit

10A IEC-to-IEC Cables kit 142257-001 (6 ft)

14UH-0701A-WWEN

166097-B21 This kit includes two sets of PDU brackets and 11 Y-

142257-002 (8 ft)

142257-003(10 ft)

cables. Each cable is 10-ft long with a 6-ft section on
the single-side and 4-ft sections on the dual-side.

The IEC-to-IEC cables can be used either as individual
power cords for the server or to extend the length of the
high-voltage Y-cables. The cables are available in six-,
eight-, and ten-foot lengths. The ProLiant DL380
Generation 2 Server ships with one 10-ft IEC to IEC
cable, part number 142257-003.