HP D7171A - NetServer - LPr Manual

Hp netserver lh 4r rack cabling guide.
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HP NetServer LH 4r Rack
Cabling Reference
HP Part Number D6969-90005
Printed in November 1998

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   Summary of Contents for HP D7171A - NetServer - LPr

  • Page 1

    HP NetServer LH 4r Rack Cabling Reference HP Part Number D6969-90005 Printed in November 1998...

  • Page 2: Audience Assumptions

    Hewlett-Packard assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Hewlett-Packard.

  • Page 3: Table Of Contents

    Contents 1 About This Cabling Reference ..............1 Introduction ....................1 Before You Use This Reference ..............1 Purpose of This Document ................ 1 Building an HP NetServer Rack..............2 Suggested Method for Building an HP NetServer Rack Installation.... 2 Cabling Warnings and Cautions..............

  • Page 4: Table Of Contents

    Contents Cabling Two Power Supplies and High Density Configuration Examples . 38 Cable Routing: Creating the Cable Management Loop ........ 41 Power Up the Components in the Rack ............42 Power Up Sequence................42 Power Down Considerations..............43 3 Cabling Reference Information ..............45 Power Cords and Component Reference.............

  • Page 5: About This Cabling Reference, Introduction, Before You Use This Reference, Purpose Of This Document

    1 About This Cabling Reference Introduction Before You Use This Reference This cabling reference assumes that you have the rack assembly process completed, have mounted the HP NetServer LH 4r, and are ready to cable the components in the rack enclosure. For instructions on how to install the HP NetServer LH 4r in a rack, consult the installation guide or user guide shipped with your unit.

  • Page 6: Building An Hp Netserver Rack, Suggested Method For Building An Hp Netserver Rack Installation

    Chapter 1 About This Cabling Reference Building an HP NetServer Rack Suggested Method for Building an HP NetServer Rack Installation Check Site Preparation Use the Site Preparation Checklist in Chapter 2 of this reference to be sure that all necessary preparations have been completed, including: Assess floor’s levelness and strength Customer network and software responsibility met Site electrical power supply set-up complete...

  • Page 7

    Chapter 1 About This Cabling Reference Prepare Rack Enclosures for Assembly WARNING A tip-over hazard exists. Rack enclosures are shipped upright and are top-heavy. Never move enclosures without adequate equipment and assistance. Use caution to prevent rack from falling over and causing potential damage or injury. If you receive pre-configured units, follow assembly instructions from the supplying organization first, if you have them.

  • Page 8

    Chapter 1 About This Cabling Reference WARNING When equipment is mounted on slides, a tip-over hazard exists. Always take the precautions listed below: Extend or bolt on the anti-tip foot for each rack before mounting equipment on slides. Never extend more than one piece of equipment on slides at time.

  • Page 9

    Chapter 1 About This Cabling Reference NOTE HP Rack System product numbers J1487B, J1487B option AXH, and J1488A require that enclosures to be tied together before any components are mounted inside them. To avoid problems, if these rack versions are to be tied together, do so before installing slide members, rails, shelves, units, or other hardware.

  • Page 10

    Chapter 1 About This Cabling Reference Mount Component in the Rack Plan Component Locations Use the original ordering information to locate where each component goes in the rack. If the original ordering information is not available, use HP rack configuration tools to plan the location of each component.

  • Page 11

    Chapter 1 About This Cabling Reference 4. Be sure to locate and place rack nuts along the front outside face of the vertical column before placing each component on its rails or base. The pre-positioning of rack nuts allows the front of the component to be secured to the front of the rack.

  • Page 12: Cabling Warnings And Cautions, Unterminated Power Cords Require Licensed Electrician

    Chapter 1 About This Cabling Reference Create a cable management loop by providing sufficient cable length to allow servers to be extended from the rack for maintenance. Attach data cables to their respective components. Attach power cables Connect each component to a Power Distribution Unit (PDU) or Units. Connect PDU and Uninterruptible Power Supply (UPS)--if present--cables to Branch Circuits.

  • Page 13: Prevent Electric Shock, Prevent Damage To Components

    Chapter 1 About This Cabling Reference Prevent Electric Shock WARNING Ensure site electrical circuits have reliable earth grounding. Never operate products in any rack enclosure with the ground connector disconnected. Although leakage current from any one device may be minimal, cumulative leakage current of equipment mounted in a rack may exceed 5mA, and could reach 15mA.

  • Page 15: Connecting And Routing Cables To The Hp Netserver Lh 4r, Introduction, Overview Of Cabling Steps

    2 Connecting and Routing Cables to the HP NetServer LH 4r Introduction Overview of Cabling Steps This chapter includes information on cabling the server and other components in a rack, including: Site preparation Cabling preparation for data and power Attach data cables Attach power cables Cable routing and management Power on the equipment in the rack...

  • Page 16: Site Preparation

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Figure 2-1. The Rack Optimized HP NetServer LH 4r Site Preparation You may want to copy and use the site preparation checklist in this section with a representative of the organization installing the rack. Doing so before you begin may reveal actions you can take to support your success.

  • Page 17: Site Preparation Checklist

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Site Preparation Checklist Table 2-1. Site Preparation Checklist HP NetServer Customer Responsibilities Logical and physical network design provided. Server configuration parameters determined. Disk partition and directory structure determined. Required incoming power and data cabling in place.

  • Page 18

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Table 2-1. Site Preparation Checklist (Continued) Environment and Space Requirements In the United States, must meet OSHA code. Elsewhere, must meet local code and HP specifications for safety and supportability. (A 3-foot--90 cm--minimum access in front and rear of electrical cabinets is required.) Side access of 24 inches (60 cm) improves cable routing and management.

  • Page 19: Site Preparation: Circuit Breakers

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Site Preparation: Circuit Breakers When you connect the HP NetServer LH 4r to an AC power source, the server temporarily draws a large "inrush current. " This occurs even when the system is in standby mode.

  • Page 20: Cabling Preparation For The Hp Netserver Lh 4r

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Cabling Preparation for the HP NetServer LH 4r Assess How Components Will Be Connected to the Server You may find the following steps helpful before you begin cabling. Review the layout of the rack installation generated with HP’s rack configuration tools.

  • Page 21

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Three Types of Power Distribution Unit The three types of Power Distribution Units (PDU) currently available for the LH 4r are: The 120 VAC PDU (HP product number E7675A) is designed to fit horizontally between the columns of the rack, but can also be mounted vertically along the outside edge of the vertical column.

  • Page 22

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Table 2-2. PDU and Cable Guide Placement Is Not Recommended Behind These Units HP Product Name Can PDU Be Mounted Behind? Reason HP NetServer Horizontal mounting not Interferes with hot- LH 4r recommended at bottom of LH 4r swappable power supplies...

  • Page 23

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Figure 2-2. Three PDU Configurations The 208-240 VAC, wide-voltage-range-rated, switchless version of the Power Distribution Unit (PDU) can be mounted in several configurations with the LH 4r. One of these configurations is shown in Figure 2-3 below. Others are listed in Table 3-2 and discussed in Chapter 3.

  • Page 24

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Figure 2-3. Mounting a Pair of PDUs Horizontally (Rear View) Once you have determined the general location and orientation, install the PDUs for the rack as described below: Mounting the PDU Horizontally Installation Steps To mount a PDU horizontally, follow these steps:...

  • Page 25

    Chapter 2 Connecting and Routing Cables to the HP NetS erver LH 4r NOTE As shown in Table 2-2, if you locate the PDU behind the HP NetServer LH 4r, HP Rack Storage/12, HP Rack Storage/8 or HP NetServer LH 3r, then the hot-swappable power supplies (or sometimes the fans) designed for access and replacement from the rear of the rack will not be easily accessible.

  • Page 26

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r CAUTION Orient the star-washer on the hex nut toward the painted surface of the rack. Tighten the screw and nut sufficiently to cause the star washers to pierce the paint and bring the lock washer teeth in contact with metal.

  • Page 27: Attach Data Cables, Plan Data Connections, Overview Of Lh 4r Data Cabling

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r 2. Use the row of mounting holes nearest the outside edge of the vertical column. Use the hex nut and screw supplied with the PDU. Hold the nut behind the column and insert the screw through the top mounting bracket of the PDU, and through the face of the vertical column.

  • Page 28: Attach Data Cables To The Server

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Figure 2-6 shows the connections of the mouse, video, and keyboard cables from the devices through the HP Console Switch, to the server. Alternate cabling paths for SCSI cables from the server to the mass storage units are also shown. Figure 2-6.

  • Page 29: Attach Data Cables To Other Components

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r 4. Attach the video cable to the video port on the server. Attach the mouse and keyboard cables to the server. If you are using one keyboard, mouse, and monitor for more than one server, attach the cables for the HP Console Switch to the server ports of the video card and the mouse and monitor ports.

  • Page 30: Attach Power Cables, Attaching Server And Component Power Cables

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Attach Power Cables When all components have been mounted in the rack and their data cables connected the power cables can be attached. Attaching Server and Component Power Cables 1.

  • Page 31: Determining Current Draw On Two Circuits In One Rack

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Determining Current Draw on Two Circuits in One Rack NOTE Amperage ratings for use in determining loads on the Power Distribution Unit are shown in Tables 3-4, 3-5, 3-6, and 3-7. If applicable, use two circuits (each including a Power Distribution Unit and an optional Uninterruptible Power Supply) in one rack.

  • Page 32: Power Considerations For The Hp Netserver Lh 4r

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Figure 2-7. Power Connection Locations on a Typical Rack (Rear View) Power Considerations for the HP NetServer LH 4r The HP NetServer LH 4r can be configured in systems with any of four voltage ranges: 100, 120, 200/208, or 230/240/250 VAC.

  • Page 33: V Pdu Rack Power Configurations

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r For 120 VAC, a 16-amp Power Distribution Unit (PDU) is available For both 200/208 and 230/240 voltages, two Power Distribution Unit (PDU) models (rated 10 A and 16 A) are available Multiple PDUs can be used in each rack enclosure, depending upon requirements for power, current, and number of receptacles The appropriate power cord for each server is shipped according to...

  • Page 34

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r If you use a wall socket directly without a UPS or PDU, be sure to check power requirements against the amperage rating of your electrical system. See the section titled "Site Preparation: Circuit Breakers.

  • Page 35

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Figure 2-8. PDU 120 VAC Configuration Figure 8 shows a UPS connected to the power grid through a captive cord with a NEMA 5-20P. The UPS has receptacles for use in the rack: two (on the right rear) NEMA 5-20R and six NEMA 5-15R.

  • Page 36

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Two 120 V PDUs per UPS Possible Two 120 VAC PDUs can be plugged into the UPS in this 120 V power configuration. There are also six NEMA 5-15R receptacles in the standard UPS which can be used for equipment in the same rack if needed.

  • Page 37

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Table 2-5. 200/208 VAC PDU Power and Current Component Model Input Input Current (Note 1, 2) Power Power (VA) 200/208 VAC E7671A or E7672A maximum HP NetServer D7093A (400 MHz/512) LH 4r D7095A (400/1M) 1130...

  • Page 38

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Figure 2-9. 208 VAC PDU Configuration...

  • Page 39

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r 230/240V PDU Rack Power Configurations Configurations for the 230/240 VAC, PDU options are shown in the text below, Table 6, and Figure 230/240 VAC Power Configuration In a country with a 230/240 VAC power system, the high-voltage (230/240 V) PDU model E7671A is required.

  • Page 40

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Table 2-6. 230/240 VAC PDU Power and Current Component Model Input Input Current (Note 1, 2) Power Power (VA) 230/240 VAC E7671A or E7672A maximum HP NetServer D7093A (400 MHz/512) LH 4r D7095A (400/1M) 1120...

  • Page 41

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Figure 2-10. 230/240 VAC PDU Configuration...

  • Page 42: Cabling Two Power Supplies And High Density Configuration Examples

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Cabling Two Power Supplies and High Density Configuration Examples Two Sets Powered by Two Supplies A double power supply configuration can be created by ensuring that two different branch circuits to feed two different Uninterruptible Power Supplies, which in turn power two PDUs.

  • Page 43

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Power Supply Redundancy and Power Cable Non-Redundancy When two HP NetServer LH 4r units are loaded in a single rack, power supply redundancy is possible. To achieve power supply redundancy, a fourth power supply must be installed in each LH4r.

  • Page 44

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Figure 2-12. 200/208 VAC High Density Configuration Block Diagram...

  • Page 45: Cable Routing: Creating The Cable Management Loop

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Cable Routing: Creating the Cable Management Loop A cable management loop allows the NetServer to be extended by service personnel (without disconnecting data cables) for upgrades and maintenance. In a fully utilized HP NetServer LH 4r, you can form a cable management loop by connecting cables when the server is fully extended from the rack.

  • Page 46: Power Up The Components In The Rack, Power Up Sequence

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r Figure 2-13. Forming the LH 4r Cable Management Loop Power Up the Components in the Rack Follow the Power Up Sequence to minimize initial surge currents and prevent breakers from tripping.

  • Page 47: Power Down Considerations

    Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r 5. If an HP Console Switch is present, it must be on before the server is turned on. Otherwise the server will not detect all the required components, and will likely report an error. 6.

  • Page 49: Cabling Reference Information, Power Cords And Component Reference

    3 Cabling Reference Information Power Cords and Component Reference Table 3-1 gives details of the plugs and receptacles for three different power alternatives for use with the HP NetServer LH 4r.

  • Page 50

    Chapter 3 Cabling Reference Information Table 3-1. LH 4r Plugs and Receptacles Reference Item 100/120VAC 200/208VAC 230/240VAC LH 4r, RS/8 Line Cord 8120-8378 See next line. See next line. NEMA 5-15 plug, 90" (2.3 m), 16 AWG LH 4r, RS/8 PDU Jumper Cord See previous E7742A E7742A...

  • Page 51: Wide-ranging Pdu Configurations

    Chapter 3 Cabling Reference Information Wide-Ranging PDU Configurations Use of four possible 200 - 240 VAC PDU configurations depends upon the power requirements of the devices in the rack. Table 3-1 shows the characteristics used to determine how many PDUs are supplied with each rack configuration. In configurations that use a wide-ranging 10-amp PDU, it will always be plugged into a wide-ranging 16-amp PDU.

  • Page 52

    Chapter 3 Cabling Reference Information Table 3-3. Receptacles Needed for Different Units Component Receptacles Required HP NetServer LH 4r two C13 or two 5-15R HP Rack Storage/8 two C13 or use Y-Cable* or Rack Storage/12 All other devices one C13 * Two Y-Cables may be used to connect two HP Rack Storage/8 units to two C13 receptacles.

  • Page 53: Power And Current For Estimating Supply Needs

    Chapter 3 Cabling Reference Information Power and Current for Estimating Supply Needs Table 3-4. 100 VAC Power and Current: Approximate Current Requirements of Rack Optimized Devices and Components Device Input Input 100v (Notes 1, 2, 3) Power Power (W) IRMS (VA) (Amps) HP NetServer LPr...

  • Page 54

    Chapter 3 Cabling Reference Information Table 3-5. 120 VAC Power and Current: Approximate Current Requirements of Rack Optimized Devices and Components Device Input Input 120v (Notes 1, 2, 3) Power Power (W) IRMS (VA) (Amps) HP NetServer LPr HP NetServer LXr 8000 Not Supported HP NetServer LH 4r 1160...

  • Page 55

    Chapter 3 Cabling Reference Information Table 3-6. 200/208 VAC Power and Current: Approximate Current Requirements of Rack Optimized Devices and Components Device Input Input 200/208v (Notes 1, 2, 3) Power Power (W) IRMS (VA) (Amps) HP NetServer LPr HP NetServer LXr 8000 1121 1077 HP NetServer LH 4r...

  • Page 56

    Chapter 3 Cabling Reference Information Table 3-7. 230/240 VAC Power and Current: Approximate Current Requirements of Rack Optimized Devices and Components Device Input Input 230/240v (Notes 1, 2, 3) Power Power (W) IRMS (VA) (Amps) HP NetServer LPr HP NetServer LXr 8000 1121 1077 HP NetServer LH 4r...

  • Page 57: Data Cabling Principles Used In Determining Rack Locations

    Chapter 3 Cabling Reference Information Data Cabling Principles Used in Determining Rack Locations A series of positioning rules are used in the HP rack configuration tools to help determine where each component is placed in multiple rack layouts. Key Cabling Guidelines Used in Developing a Rack Layout The following discussion is intended to support your understanding of how your rack order was arrived at.

  • Page 58: Cooling Requirements For The Hp Netserver Lh 4r

    Chapter 3 Cabling Reference Information Cable guide placement is determined in turn by where the doors are hinged. Doors can be mounted to swing from either side of the rack. Locate the cable guide on the same side of the rack as the door hinge hardware.

  • Page 59: Index

    Index connecting data cables, 23 connecting electrical power air flow in the rack, 54 unterminated power cords, 8 assembly instructions cooling requirements where to find, 1 LH 4r, 54 assumptions, 1 audience, 1 data cables attach to components, 25 Cable Guide attach to server, 24 installation, 16 overview, 23...

  • Page 60

    Index power strip. See Power Distribution multiple rack bays Unit tie together kit, 4 power supply redundancy, 39 power up minimizing current inrush, 9 overview power up sequence, 42 cabling the assembled rack, 7 data cabling, 23 rack assembly assemble enclosure, 4 PDU.

  • Page 61

    Index extend one unit at a time, 4 summary, 2 leveler feet, 3 lifting precautions, 3 turn on power, 42 minimize server weight, 7 moving racks safely, 3 prevent tip-over, 6 Uninterruptible Power Supply preventing component damage, 9 installation, 5 rack cabling, 8 plug in early to charge batteries, 4 rear latch removal, 5...

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