HP Hewlett Packard Switch LP 2000r User Manual

p la n n in g y o u r  
ra ck sy ste m fo r  
LP 2 0 0 0 r  
h p n e tse rve r h ig h  
d e n sity ra ck so lu tio n s  
o ve rvie w  
• up to 21 servers per  
2m rack  
• tool-less installation  
• multiple solutions for  
both 2-post and  
4-post racks  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Ad d itio n a l re so u rce s a b o u t th e HP N e tse rve r LP 2 0 0 0 r a n d  
th e HP Sy ste m / E Ra ck s  
Pu b lica tio n s  
HP N e tse rve r LP 2 0 0 0 r Use r Gu id e (HP p u b lica tio n P1 8 2 4 -9 0 0 0 9 )  
HP Ra ck Sy ste m s/ E Use r s Ma n u a l (HP p u b lica tio n 5 9 6 7 -6 4 0 9 )  
We b site s  
HP N e tse rve r w e b site : h ttp :/ / n e tse rve r.h p .co m  
HP N etse rve r Co nfig ura tio n Gu id e : h ttp :/ / netserve r.h p .co m / n e tse rve r/ to o ls/ ra ck _a sst.a sp  
HP N e tse rve r Co n fig u ra tio n Gu id e : h ttp :/ / n e tse rve r.h p .co m / n e tse rve r/ to o ls/  
HP Ra ck So lu tio n s w e b site : h ttp :/ / w w w .h p .co m / ra ck so lu tio n s/ in d e x .h tm l  
HP Ra ck Acce sso rie s w e b site : h ttp :/ / w w w .h p .co m / ra ck so lu tio n s/ m e n u _p ro d u cts.h tm l  
HP Ra ck Sy ste m / E Use r Ma n u a l: h ttp :/ / w w w .h p .co m / ra ck so lu tio n s/ I_in sta llg u id e s.h tm l  
ii  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Re a d e r Assu m p tio n s  
This white paper is for the person who installs, administers, and troubleshoots PC-based networked  
servers. Hewlett-Packard Company assumes that you are qualified in the servicing of computer equipment  
and trained in recognizing the risks posed by products with hazardous energy levels.  
We also assume that you are familiar with personal computing terminology, PC specifications, networking  
standards, and software applications.  
iii  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Ta b le o f Co n te n ts  
Se ctio n  
Pa g e  
Executive Summary....................................................................................................................................i  
List of Additional Resources .....................................................................................................................ii  
Reader Assumptions.................................................................................................................................iii  
Table of Contents......................................................................................................................................iv  
Notices........................................................................................................................................................1  
Safety and Regulatory Information...........................................................................................................2  
Glossary ......................................................................................................................................................3  
Planning Your Racked System...................................................................................................................5  
The HP Rack System/E............................................................................................................................10  
HP Rack Accessories................................................................................................................................12  
Installation................................................................................................................................................19  
Cable Management...................................................................................................................................25  
Conclusion................................................................................................................................................28  
iv  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
N o tice s  
The information contained in this document is subject to change without notice.  
Hewlett-Packard makes no warranty of any kind with regard to this material, including, but  
not limited to, the implied warranties of merchantability and fitness for a particular purpose.  
Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages  
in connection with the furnishing, performance, or use of this material.  
This document contains proprietary information that is protected by copyright. All rights are reserved. No  
part of this document may be photocopied, reproduced, or translated to another language without the  
prior written consent of Hewlett-Packard Company.  
Hewlett-Packard Company  
10955 Tantau Avenue  
Cupertino, CA 95014  
© Copyright 2002, Hewlett-Packard Company.  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Sa fe ty a n d Re g u la to ry In fo rm a tio n  
For your protection, Hewlett-Packard products are tested for conformance to various national and interna-  
tional regulations and standards. The scope of this regulatory testing includes electrical and mechanical  
safety, electromagnetic emissions, immunity, ESD, and hazardous materials.  
Where required, certifications are obtained from third party test agencies. Certification marks, when  
required, appear on the product label. In addition, various regulatory bodies require some information  
under the headings below.  
These products and related documentation must be reviewed for familiarization with safety markings and  
instructions before operation.  
WARN IN G  
CAUTIO N  
The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or  
situation which, if not done correctly or adhered to, could result in injury. Do not proceed  
beyond a WARNING sign until the indicated conditions are fully understood and met.  
The CAUTION sign denotes a hazard. It calls attention to an operating procedure, practice,  
or situation which, if not done correctly or adhered to, could damage or destroy part or  
the entire product. Do not proceed beyond a CAUTION sign until the indicated conditions  
are fully understood and met.  
Sa fe ty W a rn in g s  
The following warnings and cautions are applicable to the System/E rack. Please observe all safety  
precautions and warnings.  
This product has not been evaluated for connection to an IT power system (an AC distribution system hav-  
ing no direct connection to earth (ground) according to EN60950.  
Gro u n d in g  
WARN IN G  
The HP System/E Racks are safety class I product and has a protective earthing  
(grounding) terminal. There must be an uninterruptible safety earth ground from the main  
power source to the products input wiring terminals, power cord, or supplied cord set.  
Whenever it is likely that the protection has been impaired, disconnect the power cord  
until the ground has been restored.  
Le a k a g e Cu r re n t  
WARN IN G  
Due to types of products that can be installed in the System/E rack, there is a risk of high  
leakage current (3.5 mA). Reliable ground circuit continuity is vital for safe operation of  
this product. To reduce the risk of electric shock, earth (ground) connection is essential  
before connecting the power supply. Never operate this cabinet with the ground  
conductor disconnected.  
Po w e r Lim ita tio n s  
CAUTIO N  
To reduce the risk of overload, do not load any single Power Distribution Unit (PDU) or  
IEC-320C19 receptacle with more than a maximum of 16 A. In addition, do not load a single  
NEMA 5-15 or IEC-320 C13 receptacle with more than a maximum of 10 A.  
Ca b in e t Sta b ility  
CAUTIO N  
To reduce the risk of cabinet instability, deploy the anti-tip feet before installing or  
extending any devices. Extend only one device at a time. Do not stand or sit on any  
extended device. Qualified service personnel should do all non-operator servicing.  
Acce sso rie s  
CAUTIO N  
This product is designed for use with specific electrical accessories. The use of any other  
accessory is not recommended or supported.  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Glo ssa ry  
This glossary provides entry-level explanations of common words and phrases used when mounting multiple  
servers in racks. Detailed HP product information is available in numerous documents available from Hewlett-  
Packard, such as technical data sheets and configuration guides. You can find them on our website at  
1U – One EIA rack unit or 44.45 mm (1.75 inches) of vertical rack space. The  
height of devices, when mounted in racks, are often expressed in multiples of  
"units", for example, a 2U device requires two times 44.45 mm (1.75 inches) or a  
total of 88.9 mm (3.5 inches) of vertical space in a rack. The actual device will in  
reality be of slightly less height to eliminate mechanical interference with adjacent  
devices.  
Cable Management – Refers to a method of organizing and routing cables  
(power and data) in the rear of the rack. Effective cable management means to  
secure and bundle cables with the capability to efficiently route and channel the  
cables in an organized fashion. HP offers a Rack Cable Management Kit (J1481A)  
to provide a solution for the high-density rack environments associated with the  
HP Netserver LP 2000r.  
Console (sometimes referred to as a console system or KVM system) – Consists  
of the video monitor, keyboard and mouse connected directly, or via a console  
switch, to the rackmounted server for system administration purposes. Remote  
management technologies enable the console and server to be physically separated.  
Console Switch – A device that allows a user to operate multiple servers with  
a single keyboard, monitor, and mouse.  
KVM – Abbreviation for Keyboard/Video (Monitor)/Mouse as used in "KVM cable"  
or "KVM switch." A console switch (above) is often referred to as a KVM switch.  
PDU or Power Distribution Unit – Generally refers to a "power strip" with built-in  
power protection and mounted within the rack to furnish AC power to a group of  
rackmounted servers.  
Rackmount Flat Panel Display – A system by which a flat panel monitor,  
keyboard, and pointing device can be rack mounted to be used as system console  
but only requiring 2U of “vertical rack space” instead of 13U as is common with  
traditional monitor and keyboard combinations.  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Retractable Keyboard Kit - A product, which allows for mounting a full-size  
keyboard and mouse in a rack, occupying only 2U of vertical space and retracting  
into the rack when not used.  
Slides - A sliding rackmount solution comes standard with the HP Netserver LP  
2000r. Slides enable in-rack serviceability of the server from the front of the rack.  
Also included is a cable management arm, which allows the cabling to travel  
effortlessly as the server extends from and retracts into the rack, similar to a  
drawer in a filing cabinet.  
UPS - Uninterruptible Power Supply. A device that provides battery power for a  
server should the local AC power source fail. By providing this temporary power,  
data corruption can be avoided when a power failure occurs.  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Pla n n in g y o u r ra ck e d sy ste m  
After you've decided what computer and networking equipment and racks you need, you're faced with the  
daunting task of physically locating the systems somewhere.  
There are several conditions that must be met to assure that your system will work reliably and without  
interruptions. First, you must plan for the physical space the equipment will occupy. Second, you must  
ensure that the floor where the equipment will be located is strong enough to dependably support the  
weight. Electronic equipment, although small in size, can be physically heavy—especially Uninterruptible  
Power Supplies (UPS) that often use dense batteries.  
Third, the system planner must calculate the power requirements and determine the number of Power  
Distribution Units (PDU) and UPSs needed, as well as insuring that adequate circuitry is available in the  
facility.  
Lastly, you must insure that you can provide cooling for the equipment. Thermal requirements become a  
concern when mounting a mass of electronic equipment in a small physical space and a conscientious plan-  
ner will deal with thermal buildup in the preparation phase before the system is delivered and ready for  
mounting in the rack.  
Many of these calculations can easily be made with the special HP Netserver Rack Configuration  
these basic steps:  
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2
List a ll co m p o n e n ts.  
Co n fig u re th o se co m p o n e n ts in to ra ck s to d e te rm in e th e n u m b e r a n d  
size re q u ire d .  
the height of the equipment. With this aid, calculate how many devices can be installed into any one rack  
and its preliminary layout.  
3
Ca lcu la te th e p o w e r re q u ire m e n ts.  
The electrical power required for a racked system must be calculated to:  
1) Plan for an adequate facility supply for either 100-120V or 200-240V  
2) Determine the number of Power Distribution Units needed  
3) Determine the number of Uninterruptible Power Supplies required  
De te rm in e p o w e r re q u ire m e n ts fo r th e se rve rs.  
As mentioned above, the amount of servers that can be installed in one rack depends on a number of  
parameters: Physical space in the rack, electrical (power) requirements and thermal limitations.  
The worksheet at the end of this section allows you to calculate the actual power consumption for your  
servers, including differences due to the number of processors, HDDs, and communication cards. Knowing  
the actual power consumption lets you design a system, which precisely meets your current and future—  
requirements.  
N O TE  
Always plan your infrastructure for appropriate expandability and future growth.  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Ca lcu la te to ta l in p u t cu rre n t re q u ire m e n ts.  
In p u t cu r re n t re q u ire m e n ts  
Once you know the input power needed to operate the servers and other devices installed in the rack, you  
can calculate the input current that is required for the rack by using this formula:  
Input Power (W)  
Input/ Current (A) =  
AC Voltage (V)  
Using this basic formula, you can evaluate whether your PDU, UPS and/or local AC power circuit can provide  
the amount of current the equipment connected to it needs.  
For example, if you are connecting four servers to a 16 A PDU, you can use the tables above and deter-  
mine the total input power requirements for each server. In this example lets assume we have calculated  
these to be:  
Server  
Total Input Power (W)  
HP Netserver LP 2000r #1  
HP Netserver LP 2000r #2  
HP Netserver LP 2000r #3  
HP Netserver LP 2000r #4  
176  
177  
180  
180  
The total input power requirements for these four servers come to 713 W. By knowing that we are operat-  
ing at a line power of 100 VAC and using the formula above we can calculate that the four servers will  
require an input current of 7.13 A—well below the capacity of the 16 A rated PDU.  
Circu it b re a k e rs  
The HP Netserver LP 2000r power supply has been designed for low AC inrush current to reduce the pos-  
sibility of tripping circuit breakers, typically located at a distribution panel.  
Tripping of circuit breakers in the distribution panel may result from use of circuit breakers that are not  
adequately rated for inrush current found in most electronic devices. Replacing the circuit breaker with a  
suitable type is often the best solution.  
The largest inrush current occurs when AC is first applied to the equipment in the rack. Often this inrush  
current is independent of the on” or “off” state of the individual devices. However, you can usually reduce  
the total inrush current by applying power to the rack with the equipment in the off” stage.  
Po w e r u p se q u e n ce  
Follow these instructions to minimize inrush currents and to minimize circuit breakers from tripping:  
1. Power on peripherals one at a time; beginning with the tape back-up unit, followed by the mass-storage  
units, keyboard, video monitor, and mouse switch, if any.  
2. If your system includes an HP Console Switch, it must be powered on before the HP Netserver LP 2000r.  
3. Last, power on each HP Netserver LP 2000r and wait for the fan in each server to spin up before power-  
ing on the next one. If the HP Netserver LP 2000r doesnt detect all the required components, it will not  
complete the boot process and will report an error.  
Po w e r d o w n se q u e n ce  
There is no specific order to power down the equipment in a rack; however, there is an HP recommenda-  
tion that it be done in the following sequence:  
1. Ensure that the network users are properly warned of the power down.  
2. Shut down the Network Operating System.  
3. Power down the peripherals.  
4. Power down the Netservers.  
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5
Asse ss th e th e rm a l d issip a tio n a n d e n su re th a t th e re a re a d e q u a te  
co o lin g sy ste m s in p la ce .  
Ca lcu la te th e th e rm a l co n d itio n s.  
When mounting multiple servers in a rack you must also manage the thermal requirements. Although the  
HP Netserver LP 2000r is specifically designed with excellent heat characteristics, you must know the  
thermal load your particular rack configuration produces. This will allow you to manage the thermal envi-  
ronment within the rack to provide the conditions required for optimum server operation.  
The operating temperature specifications for the HP Netserver LP 2000r are:  
5 to 35°C (41 to 95°F)1, 2  
It is very easy to calculate the BTU/Hr an HP Netserver LP 2000r dissipates. Simply use the following  
formula:  
Input Power (watts) x 3.41=Thermal dissipation (BTU/ hr)  
If we use the example with the four servers above, we can easily calculate how many BTU/hr our servers  
will produce:  
713 W x 3.41 = 2,431 BTU/ Hr  
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Ch e ck y o u r ca lcu la tio n s.  
As with any calculation or measurement, it is always valuable to check your numbers more than one time.  
This is also the time to make adjustments to your layout. As you have gained insight into the power needs  
and weight issues, you should adjust the placement of the equipment and add racks as needed. Plan for  
easy access to equipment, which needs regular servicing, ensure that monitors and keyboards are easily  
accessible to operators, and heavier items are placed low to provide stability for the system.  
The special HP Netserver Rack Configuration software is available free of charge at:  
http:/ / netserver.hp.com/ netserver/ tools/ rack_asst.asp.  
1
Subtract 1°C (2°F) to the maximum temperature for each 600 m (2000 ft) above sea level.  
2 Subtract 3°C (5°F) to the maximum temperature when it is mounted in a non-HP cabinet.  
7
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Po w e r co n su m p tio n w o rk sh e e t - sa m p le  
The following worksheet makes it easy to make all the calculations you need to make.  
Using the worksheet is simple. Inventory the HP Netservers LP 2000r that you will be rackmounting as to  
the number of CPUs, memory boards, HDDs and add-in cards installed and input these numbers into the  
“Number Installed” column. Multiply this number with the value in the “Unit Input Power (Watts)” column  
to get the Total Input Power (Watts)” for this particular server section. Finally, add all the values in the  
“Total Input Power (Watts)” column to arrive at a total power consumption figure for the server.  
Then using the formulas provided, calculate the current requirements and the BTUs/Hr.  
For example: The calculations for an HP Netserver LP 2000r with 2 each 933 MHz processors, 2 GB of  
memory, 2 each HDDs and a NetRAID 1M controller will show the following results:  
Category  
Part Number  
Description  
Unit Input Power (Watts) Number Installed Total Input Power (Watts)  
Server  
LP 2000r Basic boardset,  
FDD, CD, fans, etc  
63.30  
1
2
63.30  
75.80  
CPU’s  
P2467A  
P2468A  
P2453A  
P4632A  
P4634A  
P5476A  
Pentium III 866 MHz  
35.05  
37.90  
41.30  
27.9  
Pentium III 933 MHz  
Pentium III 1 GHz  
Pentium III 1.13 GHz  
Pentium III 1.26 GHz  
29.5  
Pentium III 1.4 GHz  
31.2  
CPU Terminator (if no 2nd CPU)  
128 MB 133 MHz ECC SDRAM  
256 MB 133 MHz ECC SDRAM  
512 MB 133 MHz ECC SDRAM  
1 GB 133 MHz ECC SDRAM  
9.1 GB, 10k RPM Ultra3 SCSI Disk Drive  
18.2 GB, 10k RPM Ultra3 SCSI Disk Drive  
36.4 GB, 10k RPM Ultra3 SCSI Disk Drive  
73.4 GB, 10k RPM Ultra3 SCSI Disk Drive  
18.2 GB, 15k RPM Ultra3 SCSI Disk Drive  
36.4 GB, 15k RPM Ultra3 SCSI Disk Drive  
NetRAID 1Si  
2.40  
Memory  
D8265A  
D8266A  
D8267A  
D8268A  
P2472A  
P2473A  
P2474A  
P3579A  
P2507A  
P4507A  
D2140A  
D5955A  
P3410A  
P3411A  
P3475A  
D9161A  
D9351A  
D5013B  
3.45  
3.90  
4.75  
8.05  
2
2
16.10  
35.10  
Hard Disk  
Drives  
17.55  
21.50  
24.35  
15.3  
3
73.05  
22.25  
17  
RAID  
9.10  
Controllers  
NetRAID 3Si  
19.20  
10.80  
19.50  
19.50  
24.55  
24.55  
NetRAID 1M  
NetRAID 2M (64 MB cache)  
NetRAID 2M (128 MB cache)  
NetRAID 4M (64 MB cache)  
NetRAID 4M (128 MB cache)  
1
19.50  
Network  
10/100TX NIC  
2.55  
4.50  
Interface Cards N/A  
3COM 3C980C-TX 10/100 NIC  
N/A  
Intel PILA8472B Dual Port 10/100TX NIC  
Intel Pro/1000 PWLA8490T Gigabit NIC  
Intel Pro/1000 PWLA8490SX Gigabit NIC  
FC HBA  
9.95  
7.25  
7.25  
8.70  
8.70  
8.70  
N/A  
N/A  
Other PCI Cards D6802B  
P3413A  
Ultra-160 SCSI HBA  
P1218A  
Top Tools Remote Control Card  
A) Total Input Power (Watts) from the worksheet above  
272.05  
220  
B) Input the AC line power (Volts) that the system is operating on.  
C) Calculate Input Current (A) = A/ B  
1.24  
D) Calculate the Thermal Dissipation (BTUs/ Hr) = A x 3.41  
927.69  
8
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Po w e r co n su m p tio n w o rk sh e e t - a ctu a l  
Use the following blank worksheet to make the same, easy calculations for your particular configuration:  
Category  
Part Number  
Description  
Unit Input Power (Watts) Number Installed Total Input Power (Watts)  
Server  
LP 2000r Basic boardset,  
FDD, CD, fans, etc  
63.30  
1
63.30  
CPU’s  
P2467A  
P2468A  
P2453A  
P4632A  
P4634A  
P5476A  
Pentium III 866 MHz  
35.05  
37.90  
42.30  
27.9  
Pentium III 933 MHz  
Pentium III 1 GHz  
Pentium III 1.13 GHz  
Pentium III 1.26 GHz  
29.5  
Pentium III 1.4 GHz  
31.2  
CPU Terminator (if no 2nd CPU)  
128 MB 133 MHz ECC SDRAM  
256 MB 133 MHz ECC SDRAM  
512 MB 133 MHz ECC SDRAM  
1 GB 133 MHz ECC SDRAM  
9.1 GB, 10k RPM Ultra3 SCSI Disk Drive  
18.2 GB, 10k RPM Ultra3 SCSI Disk Drive  
36.4 GB, 10k RPM Ultra3 SCSI Disk Drive  
73.4 GB, 10k RPM Ultra3 SCSI Disk Drive  
18.2 GB, 15k RPM Ultra3 SCSI Disk Drive  
36.4 GB, 15k RPMUltra3 SCSI Disk Drive  
NetRAID 1Si  
2.40  
Memory  
D8265A  
D8266A  
D8267A  
D8268A  
P2472A  
P2473A  
P2474A  
P3579A  
P2507A  
P4507A  
D2140A  
D5955A  
P3410A  
P3411A  
P3475A  
D9161A  
D9351A  
D5013B  
3.45  
3.90  
4.75  
8.05  
Hard Disk  
Drives  
17.55  
21.50  
24.35  
15.3  
22.25  
17  
RAID  
9.10  
Controllers  
NetRAID 3Si  
19.20  
10.80  
19.50  
19.50  
24.55  
24.55  
NetRAID 1M  
NetRAID 2M (64 MB cache)  
NetRAID 2M (128 MB cache)  
NetRAID 4M (64 MB cache)  
NetRAID 4M (128 MB cache)  
Network  
10/100TX NIC  
2.55  
4.50  
Interface Cards N/A  
3COM 3C980C-TX 10/100 NIC  
N/A  
Intel PILA8472B Dual Port 10/100TX NIC  
Intel Pro/1000 PWLA8490T Gigabit NIC  
Intel Pro/1000 PWLA8490SX Gigabit NIC  
FC HBA  
9.95  
7.25  
7.25  
8.70  
8.70  
8.70  
N/A  
N/A  
Other PCI Cards D6802B  
P3413A  
Ultra-160 SCSI HBA  
P1218A  
Top Tools Remote Control Card  
A) Total Input Power (Watts) from the worksheet above  
B) Input the AC line power (Volts) that the system is operating on.  
C) Calculate Input Current (A) = A/ B  
D) Calculate the Thermal Dissipation (BTUs/ Hr) = A x 3.41  
9
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
HP Ra ck Sy ste m / E  
The HP Rack System/E is a full-featured, advanced rack for the most demanding rackmount requirements today  
and in the future.  
Designed for flexibility, the  
HP Rack System/ E base rack  
The clean, contemporary look of  
HP Rack System/ E showcases  
your computers and peripherals.  
and accessories can be  
configured to adapt to a  
broad range of requirements.  
Perforated doors for  
ventilation  
12-gauge columns provide  
strength  
Snap side panel allows  
easy access  
Anti-tip foot  
Se le ctio n  
Three sizes — 41U, 33U, 25U — offer a range of rackmount capacity. Racks can stand alone or be attached  
together in a multi-rack unit. Doors can be mounted to open to the left or right.  
As your needs grow, the HP Rack System/E can grow vertically with an 8U extension kit. With the kit, the  
25U rack becomes 33U, the 33U rack becomes 41U, and the 41U rack becomes 49U.  
Ve n tila tio n  
The HP Rack System/E allows air to flow freely, for better cooling. The top is fully ventilated, and perforat-  
ed doors provide 63% opening.  
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Stre n g th  
HP Rack System/E handles your heaviest equipment. The 12-gauge columns and reinforced base support  
up to 907kg (2000lb) of equipment in the rack. EIA mounting units are numbered on the columns, making  
it easy to correctly position rackmount rails, slides, and shelves.  
Mo b ility  
HP Rack System/E carries your equipment where its needed. At your site, it rolls easily on polyurethane  
wheels that dampen the effect of bumps, jolts, and uneven floors. Even the tallest rack, 41U, can fit  
through most doorways, worldwide.  
Ea se o f Use  
Cosmetic front filler panels and side panels snap on and off without tools. When its necessary to remove  
them, doors lift off easily (doors cannot be removed when closed, so security is not compromised).  
Sta b ility  
The HP Rack System/E has anti-tip feet that attach to both the front and rear of the rack. The feet provide  
anti-tip protection while installing or servicing slide-mounted devices.  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
HP Ra ck Acce sso rie s  
In addition to the rack itself, HP offers numerous accessories to increase the convenience and safety of  
having your servers installed in a rack.  
Fro n t d o o rs, sid e p a n e ls a n d tie k its  
Each HP Rack System/E racks include a perforated, lockable rear door. In addition optional side panels  
and a front door can be chosen as your needs demand.  
All the three available front doors—different only by their heights—offer 63% per-  
foration so that the equipment mounted in the rack can be clearly seen through the  
door. Also, the large perforations allow for optimum ventilation.  
The doors can be mounted to open either to the left or to the right and come com-  
plete with all the mounting hardware. The quick-disconnect hinges allow the door  
to be easily lifted off without tools but prohibit it to be removed when the door is  
locked. A torx 25 driver is the only tool required for installation of hinges.  
For Use with HP Rack Model Number  
HP Rack System/ E41 (J1500A)  
HP Front Door Product Number  
J1509A  
J1510A  
J1511A  
HP Rack System/ E33 (J1501A)  
HP Rack System/ E25 (J1502A)  
To cover the sides of the racks - whether for protection or appearance—HP provides kits consisting of  
enough PC-ABS injection molded plastic snap-in side panels to cover both sides of the racks. Because they  
can be removed and installed easily without tools, access to the equipment inside is always effortless and  
convenient.  
For Use with HP Rack Model Number  
HP Rack System/ E41 (J1500A)  
Content  
HP Side Panel Kit  
J1506A  
Model Number  
2 each 9U side panels  
8 each 8U side panels  
HP Rack System/ E33 (J1501A)  
2 each 9U side panels  
6 each 8U side panels  
J1507A  
HP Rack System/ E25 (J1502A)  
2 each 9U side panels  
4 each 9U side panels  
J1508A  
In some systems with multiple servers, you may decide to install peripherals and  
additional equipment in a second, or even third, rack. In such instances, the HP Tie  
Kits allow you to add lateral stability by mechanically connecting the racks.  
There are two kits to choose from per the following table. The kits include fasteners  
to tie the racks together at the top and the bottom (both front and rear) as well as  
cosmetic covers.  
This hardware has been designed so that you can tie the racks together after the  
servers and/or other equipment have already been installed. There is no need to turn  
off the power to the system.  
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To Tie Together the Following  
HP Rack System/ E  
Use Tie Kit  
HP Model Number  
HP Model Number  
Kit Contains  
Mount Fastener  
2 each 41U racks (J1500A)  
J1512B  
2 Front Tie Brackets  
2 Rear Tie Brackets  
2-Part Cosmetic Cover  
1 each 41U rack (J1500A) and  
1 each 33U rack (J1501A)  
J1513B  
2 Front Tie Brackets  
2 Rear Tie Brackets  
2-Part Cosmetic Cover  
2 each 33U rack (J1501A)  
J1513B  
2 Front Tie Brackets  
2 Rear Tie Brackets  
2-Part Cosmetic Cover  
Any combination  
No kit available  
that includes a 25U rack  
Ca b le Ma n a g e m e n t Acce sso r y  
The HP Netserver LP 2000r is delivered complete with slides ready for installation. However, if additional  
cable management is needed, the HP Rack Cable Management Kit (J1481A) comes in handy.  
It offers a solution to route and organize cables in high-density rack environments.  
The kit contains four brackets for routing and channeling cables and 12 Velcro™ ties  
for securing and bundling. The J1481A is designed to offer a flexible and scaleable  
solution to accommodate various racking and cabling scenarios. Brackets can mount  
on both the left and right rear columns and can be used with both rail and slide rack-  
mounting. Multiple kits can be used in combination to provide additional cable man-  
agement as the rack density increases. Each bracket is designed to contain approxi-  
mately 30 large SCSI cables (1/2” diameter) or 120 LAN cables (1/4” diameter) or  
any combination of the two (i.e. 15 SCSI/60 LAN).  
The Rack Cable Management Kit offers complete compatibility with HP System/E  
Racks and industry standard non-HP racks.  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
HP Po w e r Distrib u tio n O p tio n s  
HP offers a series of Power Distribution Units (PDU) for use when the HP Netserver LP 2000r is to be  
mounted in a rack. The PDUs are especially convenient when mounting multiple servers as you simply  
route each power cord to the closest PDU rather than to the local power source or the Uninterruptible  
Power Supply (UPS), if used.  
In addition to convenience, the HP PDUs also provide protection for the servers. All feature a circuit pro-  
tector for each power phase. If one phase shorts, one or both of the circuit protectors trip.  
Unlike other PDUs, the HP devices are slim and allow you to easily reach the servers and other equipment  
from any angle. All mounting hardware is built in (mounting brackets) or included (mounting screws and  
nuts) so there is nothing extra to order.  
The PDUs mount quickly out-of-the-way on the rear posts of HP four-  
post racks, either vertically along the posts or horizontally between  
them, as your needs dictate. The rear columns have four dedicated  
spaces to mount the PDUs, so that they wont interfere with the  
hinges and latches of the rack door or the equipment in the rack.  
Routing power cords from the HP Netserver LP 2000r is straight for-  
ward since the cords and the PDUs are all located at the rear of the  
rack.  
There are four types of PDUs available for use with the HP Netserver  
LP 2000r, depending on your voltage and outlet requirements:  
Voltage  
Current  
16 A  
Outlets  
HP Product Number  
Number  
Type  
1
100-127 VAC  
100-240 VAC  
9
1
NEMA 5-15R  
IEC 320 C-13  
E7675A  
16 A  
6
2
C-13 receptacles  
C-19 receptacles  
E7671A  
100-240 VAC  
100-240 VAC  
16 A  
16 A  
10  
C-13 receptacles  
E7676A  
E7674A  
7
1
1
IEC 320 C-13  
IEC 320 C-19  
IEC 320 C-20  
1 Hp recommends using the 100-240 VAC PDUs wherever possible  
E7675A  
E77671A  
(100-240 VAC)  
E7676A  
(100-127 VAC)  
(100-240 VAC)  
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Because of the varying AC plug and receptacle requirements around the world, the PDUs do not come with  
attached power cords. Separate cords must be ordered to fit your specific situation. These are the available  
cords for each PDU:  
Voltage  
PDU selected  
Power Cord Plug Style  
Length  
HP Product Number  
100-127 VAC  
E7675A  
5-20P  
4.5 m (177.2 inches)  
E7802A  
C20  
4.0 m (157.5 inches)  
4.5 m (177.2 inches)  
4.5 m (177.2 inches)  
4.5 m (177.2 inches)  
4.0 m (157.5 inches)  
4.5 m (177.2 inches)  
4.5 m (177.2 inches)  
4.5 m (177.2 inches)  
4.5 m (177.2 inches)  
4.5 m (177.2 inches)  
4.5 m (177.2 inches)  
4.0 m (157.5 inches)  
4.5 m (177.2 inches)  
4.5 m (177.2 inches)  
4.5 m (177.2 inches)  
4.5 m (177.2 inches)  
E7804A  
E7806A  
E7802A  
E7803A  
E7804A  
E7805A  
E7806A  
E7808A  
E7809A  
E7802A  
E7803A  
E7804A  
E7805A  
E7806A  
E7808A  
E7809A.  
No plug  
5-20P  
L6-20P  
C20  
100-240 VAC  
E7671A  
L6-30P  
No plug  
IEC309  
CEE7/ 7  
5-20P  
L6-20P  
C20  
100-240 VAC  
E7671A  
L6-30P  
No plug  
IEC309  
CEE7/ 7  
HP recommends that you connect the power cord of the PDUs to an Uninterruptible Power Supply (UPS),  
so be sure to read the chapter about UPSs and how to select the correct one for your application.  
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Un in te rru p tib le Po w e r Su p p lie s (UPS)  
The Uninterruptible Power Supply (UPS) is used to provide power to servers and peripherals should the  
AC power fail. Generally, the UPS will maintain an appropriate level of AC voltage and current long enough  
for the equipment to save open files and shut itself down in an orderly manner.  
All UPSs sold by HP for use with the HP Netserver LP 2000r also feature complete surge protection and  
noise filtering.  
Sizing a UPS is easy. However, many people are often confused over the differences between Watts and VA  
and which rating to use when selecting a UPS.  
Power is a measure of energy divided by time. In direct current (DC) environments power is expressed as:  
Power = Volts x Amps  
In alternating current (AC) circuits, however, some of the current may travel into and back out of the  
equipment. This current is called a harmonic current and creates an apparent power (VA), which is larger  
than the actual power (W).  
For many electrical devices the difference between the apparent power (VA) and the actual power (W)  
can be ignored. This applies to the HP Netserver LP 2000r. However, some devices without “power factor  
correction” may have an apparent power (VA) that is up to two times the Watt rating of the device.  
Normally, the required UPS rating may be determined by the total Watts required. However, if the UPS  
load consists of a high percentage on non-power factor corrected equipment, the VA rating of the UPS  
must also be considered to avoid overloading the UPS.  
Un in te rru p tib le  
Po w e r Su p p ly  
These are the UPSs available for the HP Netserver LP 2000r:  
Input Voltage  
Volts/ Amps  
Output Receptacles  
Input Plug  
HP Product Number  
Quantity  
Type  
120 VAC  
120 VAC  
2.2 kVA  
3.0 kVA  
2
6
NEMA 5-20  
NEMA 5-15  
NEMA 5-20P  
NEMA L5-30P  
APC2R120  
1
2
1
4
NEMA 5-20  
NEMA L5-20  
NEMA 5-15  
APC3R120  
208 VAC  
3.0 kVA  
2
2
1
NEMA 5-15  
NEMA L6-20  
NEMA L6-30  
NEMA L6-20P  
APC3R208  
APC2R230  
230 VAC  
230 VAC  
2.2 kVA  
3.0 kVA  
1
8
IEC-19  
IEC-320  
IEC320  
IEC320  
2
1
8
IEC-19  
IEC-320  
APC3R230  
1 For integrated shipment, order HP Product Number APC3RA  
2 For integrated shipment, order HP Product Number APC31A  
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All are designed especially for use with the HP Netservers—including their “look and feel.” But they are  
manufactured and supported by American Power Conversion (APC), supplier of the worlds most reliable  
power protection, and available exclusively from HP.  
All the units are rackmountable in a standard EIA 19 inch rack and occupy only 3U of vertical space.  
The UPSs come complete with all rackmounting hardware. In the planning stage be sure to keep in mind  
that the units are heavy because of the internal stand-by battery, up to 58 kg (127 lbs.) Therefore they  
should be located as low as possible in the rack so as not to contribute to any instability.  
A full-featured power management software application comes with each unit, as well as the serial cable  
that is used to connect the UPS to the servers. The PowerChute Plus software allows users to monitor and  
configure their UPSs and will command the servers to save any open files and execute a “soft” shutdown  
during an extended power outage.  
Co n so le Sw itch  
A console switch is a convenient way to manage a system with multiple servers. It allows up to 64 HP  
Netservers LP 2000r to be controlled from a single keyboard, monitor and mouse (KVM).  
HP offers two devices; one that switches four systems into your console and  
one that switches eight.  
If your system consists of more servers than one Console Switch can accom-  
modate, you can tier multiple switches to allow up to 16 servers (for the 4-  
port switches) or up to 64 servers (for the 8-port switches) to be managed by  
one KVM set.  
A unique feature of the HP switch is that it can at any time be equipped with an expansion kit that allows a  
second user full control from a remote console, concurrently with the original user. This lets you keep your  
original investment and add only what you need, the interface for the second user.  
Each console switch requires only 1U of vertical height when mounted in the front of the rack. They may  
also be mounted in the rear of the rack and, if space allows them to be mounted behind other devices, they  
do not require any additional rack height.  
The switches are firmware-controlled and allow users to name, select, control, and operate all connected  
servers using a simple pop-up menu. A “Keep Alive” feature, available exclusively from HP, safeguards the  
servers from locking up if power to the switch is lost.  
These are the console switches available from HP:  
Description  
Includes  
HP Console Switch Model Number  
Available  
HP 2-User Expansion Kit  
4-Port Console Switch  
8-Port Console Switch  
Rackmount Kit  
U.S. and IEC-320 power cords  
J1473A  
J1474A  
J1475A  
Rackmount Kit  
J1475A  
U.S. and IEC-320 power cords  
The monitor, keyboard and mouse of the system console are connected to the switch using the cables that  
came with these devices. They are plugged into three corresponding ports in the rear of the console  
switch.  
The switch is then connected to the CPUs of the HP Netserver LP 2000r via the optional cables in the table  
below, selectable by length.  
These cables feature three separate plugs on the CPU side, which are connected where the monitor, key-  
board and mouse normally would be attached.  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Length  
Connectors  
CPU side  
Connectors  
Console Switch side  
HP Model Number  
4 ft (1.2 m)  
1 ea “Dhigh density video connector  
1 ea 25-pin “Dconnector  
J1483A  
1 ea standard DIN type keyboard connector  
and 1 ea standard DIN type mouse connector  
8 ft (2.4 m)  
1 ea “Dhigh density video connector  
1 ea standard DIN type keyboard connector  
and 1 ea standard DIN type mouse connector  
1 ea 25-pin “Dconnector  
J1476B  
J1477B  
15 ft (4.6 m)  
1 ea “Dhigh density video connector  
1 ea 25-pin “Dconnector  
1 ea standard DIN type keyboard connector  
and 1 ea standard DIN type mouse connector  
The cables above are also used to tier the console switches. The 25-pin end of the cable is connected to  
one of the ports in the console switch and the three connectors on the other end goes into the daisy-  
chained switchs video, mouse and keyboard receptacles. So, when youre planning your multiple server  
system, be sure to note that one port in the 4- or 8-Port Console Switch is used for daisy-chaining.  
The HP 2-User Expansion Kit is easily connected to the Console Switch using a standard Category 5  
Unshielded Twisted Pair cable with a RJ-45 style modular plug on the switch end and an EIA (TIA) 568 B  
plug, commonly used for 10BaseT Ethernet, on the expansion kit end. The second system console then  
connects to the Expansion Box and can actually be placed up to 500 ft away from the Console Switch.  
HP Ra ck m o u n t Fla t Pa n e l Mo n ito r a n d Ke y b o a rd  
When planning a multiple server system—as with any system that features a computer—one important  
decision you have to make is where to place the system console. It is typically a large device compared to  
the rest of the equipment and requires excessive amount of vertical space if placed in the  
system rack.  
To solve the planners dilemma, HP offers a space-saving solution: A high quality  
15-inch flat panel display and a full keyboard with a trackball and wrist support  
that fits into only 2U of vertical space.  
The display is a TFT active matrix and guarantees a flicker-free picture at  
refresh rates as low as 60 Hz.  
Kit Contains  
HP Model Number  
15-inch High Quality Monitor  
J1470A  
Keyboard with trackball and wrist rest  
Sliding drawer assembly with cable management arm  
All mounting hardware  
HP Ra ck Sy ste m / E Ve rtica l Ex te n sio n Kit  
How do you add a few more inches of rackmounting space? There really is a way with the HP Rack  
System/E Vertical Extension Kit, HP part number J1471A. Suddenly, you get more inches to use for sever-  
al additional servers, storage units, or networking equipment. Up to 8U, in fact.  
The extension kit installs easily in minutes, without emptying the rack or using special tools. It comes  
complete with a rear door extension and two each 8U side panels.  
HP Vertical Extension Kit  
Includes  
J1471A  
Four column extensions, One rear hinge, One rear door extension, Two 8U side panels,  
All mounting hardware, Installation instructions  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
In sta lla tio n  
Ease of installation is one key to speedier deployment. Fortunately, mounting and bringing multiple HP  
Netservers LP 2000r online is quick with only a few steps to follow.  
At this point, bring out the power and physical space calculations you made based on the preceding sec-  
tions and verify that the conditions are still valid. During the deployment, computing requirements are  
often modified and therefore changes will have to be made in the racks or the racked equipment, which in  
turn affects the thermal or power calculations.  
CAUTIO N  
This is a safety class I product and has a protective earthing (grounding) terminal. There  
must be an uninterruptible safety earth ground from the main power source to the products  
input wiring terminals, power cord, or supplied cord set. Whenever it is likely that the  
protection has been impaired, disconnect the power cord until the ground has been restored.  
CAUTIO N  
Due to types of products that can be installed in this cabinet, there is a risk of high leakage  
current (3.5 mA). Reliable ground circuit continuity is vital for safe operation of this product.  
To reduce risk of electric shock, earth (ground) connection is essential before connecting  
the power supply. Never operate this cabinet with the ground conductor disconnected.  
CAUTIO N  
CAUTIO N  
To reduce the risk of overload, do not load any single PDU with more than a maximum of  
16 A. In addition, do not load a single NEMA 5-15 or IEC-320 receptacle with more than 15 A.  
To reduce the risk of cabinet instability, fully deploy the anti-tip mechanism before  
extending any devices. Extend only one device at a time. Do not stand or sit on any  
extended device. Qualified service personnel should do all non-operator servicing.  
Fle x ib le in sta lla tio n o p tio n s  
A. 4 -p o st (HP Sy ste m / E ra ck s o r EIA sta n d a rd ca b in e ts)  
Slid e m o u n tin g  
This is the perfect solution for in-rack serviceability  
All mounting hardware is included as standard equipment with the HP Netserver LP 2000r.  
Attaching the slides is a tool-less procedure.  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Ma rk in g th e ra ck  
The HP Netserver LP 2000r rack mount kit requires two EIA units of space in the rack. It is, of course,  
imperative that all system components be mounted on the level. To ensure this, you must install all the  
equipment in the correct holes. The instructions below describe how to mark the rack before you begin  
the installation.  
Use this section to mark the front and rear columns of the HP System/E or HP System/U rack. The slide-  
rails mount to the face of the front columns and the inside face of the rear columns. The rack template and  
marking pen (or masking tape) are used to identify and mark the locations on the columns.  
CAUTIO N  
N O TE  
If other rack components are to be mounted in the rack below the HP Netserver, install  
those components before starting to mount the Netserver.  
Use the HP Rack Configuration Tools to determine where in the rack to mount the HP  
Netserver. The tools are available at: http:/ / www.hp.com/ netserver/ support  
1. Find the EIA unit markings on the rack and the location for the Netserver.  
The screw holes cover a span of only one EIA unit, two of which is the height requirement of the HP  
Netserver LP 2000r.  
2. Use the masking tape (or marking pen) to mark above the 3rd hole up on both front columns, as shown  
in the figure below.  
3. Mark the inside face of the left-rear and right-rear rack columns as shown in figure below.  
Marking Rack Columns  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
B. 2 -p o st EIA sta n d a rd n o n -HP ra ck s (3 o p tio n s)  
1 . Fix e d , ce n te r m o u n tin g  
All mounting hardware brackets are included as standard equipment with the HP Netserver LP 2000r.  
Only a T-15 Torx driver and a Number 2 Phillips screwdriver are needed for installation.  
2 . Fix e d , flu sh m o u n tin g  
All mounting hardware brackets are included as standard equipment with the HP Netserver LP 2000r.  
Only a T-15 Torx driver and a Number 2 Phillips screwdriver are needed for installation.  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
3 . Slid e m o u n tin g  
Use the HP J1480A, 2-Post Slide Mount Adapter. Attaching the slides is a tool-less procedure.  
Ma rk in g th e Ra ck  
The HP Netserver LP 2000r rack mount kit requires two EIA units of space in the rack. Use this section to  
mark the columns of the 2-post non-HP rack. The brackets attach to the front side of the two columns for  
either flush mount or center mount brackets. The masking tape (or marking pen) is used to identify and  
mark the locations on the columns.  
CAUTIO N  
If other rack components are to be mounted in the rack below the HP Netserver,  
install those components before starting to mount the Netserver.  
N O TE  
Use the HP Rack Configuration Tools to determine where in the rack to mount the HP  
Netserver. The tools are available at: http:/ / www.hp.com/ netserver/ support  
1. Use the mounting brackets to help find the Netserver location on the columns, as shown in figure below.  
The screw holes cover a span of only one EIA unit, which is the height requirement of the HP Netserver.  
2. Use the masking tape (or marking pen) to mark above the 3rd hole up the on face of both front  
columns, as shown in figure below.  
N O TE  
The brackets use the 1st and 5th holes on the respective front columns, regardless of the  
mounting position.  
Location Marks on the Rack's Front Columns  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Pre p a rin g th e HP N e tse rve r fo r 2 -p o st ra ck in sta lla tio n  
Each HP Netserver has two rails attached at the factory and shipped to customers. These two rails must be  
removed to attach the brackets, before the Netserver can be mounted in the rack.  
1. Lay the HP Netserver on a flat surface.  
2. Remove the 3 screws holding the rails to each side of the chassis. See figure above.  
3. Refer to the installation instruction for the HP J1527A Slide Rackmount Kit and HP J1480A 2-post Slide  
Mount Adapter.  
Be fo re y o u b e g in in sta lla tio n  
Step 1. Verify that the floor where the equipment will be located can support the weight. Also verify that  
there is enough space for slide mounted equipment to be fully extended and that doors can swing freely.  
Step 2. Verify that the appropriate electrical power is available.  
Step 3. Unpack and place rack at the designated location.  
Step 4. Secure and level the rack(s) using the leveling feet. Be sure to deploy the anti-tip feet, if appropriate.  
Step 5. Install the equipment.  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
In sta llin g th e Un in te r ru p tib le Po w e r Su p p lie s  
The Uninterruptible Power Supplies (UPSs) are typically the heaviest devices in your installation due to  
the dense back-up batteries they contain. Therefore, they must be located at the bottom of the rack - or  
racks. For one, that will provide stability, although you should not rely completely on the equipment to bal-  
ance the system but also properly deploy the anti-tip feet as your HP System/E Rack Users Guide advises.  
Also because of their weight—typically over 51 kg (112 lbs)—the installation will require at least two people.  
The American Power Conversion (APC) labeled UPSs, available from Hewlett-Packard, come complete  
with rackmounting rails and all hardware. The only tools required for installation is a Phillips screwdriver.  
Complete installation instructions are included in the box with the product, as is the software required to  
communicate with the servers. Should you require further information, free support is available from APC.  
In sta llin g th e se rve rs  
The HP Netserver LP 2000r User Guide contains easy, detailed instructions on how to mount the HP  
Netserver LP 2000r in HP System/E racks, as well as 2-post non-HP and 4-post older HP racks.  
In sta llin g Po w e r Distrib u tio n Un its  
You can mount up to four HP Power Distribution Units (PDUs) on the rear columns of the HP System/E  
racks.  
HP recommends that you power your system using 208-240V AC wherever possible. This will keep the line  
current down and reduce the number of PDUs required. Most configurations can be supported by four or  
less PDUs, which can all be mounted conveniently and out-of-the-way on the rear columns.  
In a maximum configuration, however, an additional PDU must be  
used and it mounts horizontally between the two rear columns.  
Generallu, HP recomends that it be mountedhalfway up the posts  
in the middle.  
Installation of the HP PDUs is simple and the products come with  
all the mounting hardware, including screws and nuts. A separate  
installation kit is not needed. A built-in mounting bracket can be  
positioned so outlets face up, down or outward.  
The PDUs can be mounted on the rear  
columns in four designated places  
Horizontal Mounting  
24  
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Ca b le Ma n a g e m e n t  
HP Sy ste m / E ra ck s  
Once the servers have been mounted in the rack, the next task is to connect the cables.  
Typically, an HP Netserver LP 2000r will have several of these attached: KVM (keyboard, video and  
mouse) cables, peripheral (usually SCSI) cables, LAN cables and one or two power cords, since the HP  
Netserver LP 2000r can be equipped with a second, redundant power supply. Managing this multitude of  
cables can be a challenging assignment, especially in a rack with multiple servers along with the slides.  
However, by following HPs recommendations for cable management the task will require less effort than  
expected.  
1
Atta ch th e Ca b le Ma n a g e m e n t Arm .  
Attach the Cable Management Arm (CMA) to the rear of each  
server per the instructions in the HP Netserver LP 2000r User  
Guide. The CMA comes as standard equipment with the servers  
(along with the slides).  
2
2
Atta ch th e m a in ca b le g u id e s.  
Attach the brackets from the HP J1481A Rack Cable Management  
Kit to the right rear post of the rack. The kit contains four cable  
management brackets as well as 12 Velcro™ ties and all the hard-  
ware you need for mounting.  
We have found it most convenient to attach the brackets at EIA  
units 14U, 20U, 27U and 33U (counting from the bottom of the  
rack), especially if you need to include the fifth, horizontal PDU  
because it needs to be located towards the middle of the rack for  
the best routing of the power cords.  
25  
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3
4
5
Be g in ro u tin g th e ca b le s.  
Starting with the server mounted on the bottom of the rack, gath-  
er its cables in your hand and curve them towards the right. Tie  
them with a Velcro™ strap or a cable tie.  
Se cu re e a ch ca b le b u n d le .  
Gently guide the cables into the trough of the cable management  
arm, following the suggestions in the installation instructions.  
Where they emerge from the arm, secure the bundle to one of  
the arm supports with a Velcro™ strap or a cable tie. Make sure  
that the power cords are easily identified and can be routed sepa-  
rately from the remaining cables.  
Ro u te th e ca b le s to th e ir d e stin a tio n .  
Systems are generally designed for specific requirements and will  
differ from each other. But when multiple servers are mounted  
in a rack, most KVM (or console switch), peripheral and LAN  
cables are routed down towards the floor and out through the  
cable opening. Power cords, however, are generally connected to  
the appropriate Power Distribution Unit (PDU) within the rack.  
As the cables emerge from the cable management arm, guide the  
appropriate ones down the right rear post and allow them to be  
kept in place by the cable management brackets.  
The power cords, however, usually leave the main bundle at  
intervals to be connected to the PDUs within the rack. Your par-  
ticular requirements will determine where these breakouts occur.  
26  
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6
Ro u te th e p o w e r co rd s to th e a p p ro p ria te p o w e r d istrib u tio n u n it.  
Again, different systems require different solutions but servers with redundant power supplies may require  
special care when selecting the PDUs. To maintain the protection of redundancy, both power supplies in a  
server can be connected to separate PDUs.  
In addition you must ensure that your power cords will be long enough to reach the assigned PDU. This is  
why we recommend placing the horizontal PDU in the middle of the rack.  
Here is one recommended solution:  
In systems with just one server power supply, connecting to the appropriate PDU is less complex but do  
keep the current draw in mind so that the PDUs are not overloaded.  
7
Ma in ta in th e a m b ie n t te m p e ra tu re .  
When physically routing the power cords make sure that they dont impede airflow to the servers. When  
crossing over from the right side to reach the PDUs mounted on the left rear post, route the cords along  
the cable management arm but dont attach them to the arm. This will prevent the arm from smoothly  
articulating when a server is pulled out from the front.  
27  
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HP Netserver High Density Rack Solutions Overview (LP 2000r)  
Co n clu sio n  
By providing flexible, tool-less rack solutions, superior cable management, and aids to help plan your rack  
environment, HP has set the standard for easing rack deployment.  
By including all the hardware you need with the server, HP insures that you wont delay your deployment  
because you forgot to order costly miscellaneous rackmounting accessories. And by giving you tools to cal-  
culate power and thermal requirements, you can optimize your infrastructure to support your solutions.  
28  
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Technical information in this document is  
subject to change without notice.  
© Copyright Hewlett-Packard Company 2002.  
All Rights Reserved.  
Reproductions, adaptations, or translation  
without prior written permission is  
prohibited, except as allowed under the  
copyright laws.  
Printed in January, 2002  
Part Number: 5980-5426EN  
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