EXPRESS5800/ST1430. Disk Expansion Unit Service Guide

Transcription

1 EXPRESS5800/ST1430 () Disk Expansion Unit Service Guide

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3 EXPRESS5800/ST1430 () Disk Expansion Unit Service Guide

4 Proprietary Notice and Liability Disclaimer The information disclosed in this document, including all designs and related materials, is the valuable property of NEC Computers Inc. and/or its licensors. NEC Computers Inc. and/or its licensors, as appropriate, reserve all patent, copyright and other proprietary rights to this document, including all design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are expressly granted to others. The NEC Computers Inc. product(s) discussed in this document are warranted in accordance with the terms of the Warranty Statement accompanying each product. However, actual performance of each such product is dependent upon factors such as system configuration, customer data, and operator control. Since implementation by customers of each product may vary, the suitability of specific product configurations and applications must be determined by the customer and is not warranted by NEC Computers Inc. To allow for design and specification improvements, the information in this document is subject to change at any time, without notice. Reproduction of this document or portions thereof without prior written approval of NEC Computers Inc. is prohibited. Trademarks All product, brand, or trade names used in this publication are the trademarks or registered trademarks of their respective trademark owners. PN: November 2000 Copyright 2000 NEC Computers Inc. 15 Business Park Way Sacramento, CA All Rights Reserved

5 Contents Using This Guide Text Conventions...viii Safety Notices...ix Safety Notices for Users Outside of the U.S.A. and Canada...ix Care and Handling...x 1 DEU Overview Overview SCSI Disk Drive Bays SAF-TE Controller High Capacity Cooling Fans Power Supplies I/O Panel Connectors Security Features and Indicators Front Chassis Features and Indicators Rear Chassis Features and Indicators Chassis Features Setting Up The DEU Overview Selecting a Site Unpacking the DEU and Rack Mounting Hardware Rack-Mount Subsystem Assembly Before You Begin Static Precautions Preparing the Mounting Brackets and Rail Assemblies Locating the DEU Mounting Position in the Rack Attaching the Mounting Bracket Assembly to the Rack Attaching the Arm Bracket to the DEU Attaching the Arm Assembly to the Rack Mounting Bracket Installing the DEU into the System Rack Attaching the Arm Assembly to the Arm Bracket Installing the Front Bezel Cabling Termination Cable Dressing Cabling Configurations Connecting the Power Cord(s) Powering On/Off Configuring the DEU Switch Settings Assembly and Disassembly Static Precautions Preparing Your DEU for Upgrade Accessing the DEU Hard Disk Drives Contents iii

6 SCSI ID Assignment Installing or Swapping a Hard Disk Drive in a Hot-swap Bay Installing or Swapping a Hard Disk Drive Power Supply Installing the Optional Power Supply Replacing a Power Supply Removing and Replacing the Top Cover Replacing a Fan Module Replacing the Fan Module Cable Assemblies Removing the DEU Fan Cable Assembly Removing the Fan Module Cable Assembly Adding the Optional I/O Module Board Removing the DEU from the Rack Installing the DEU into the System Rack Removing and Replacing the Power Board Removing the Power Board Replacing the Power Board Removing and Replacing the SCSI Backplane Removing the SCSI Backplane Replacing the SCSI Backplane Replacing the DC Power ON/OFF Button Assembly Removing and Replacing the Rear Panel Fan LED Cable Assembly Removing the Fan LED Cable Assembly Removing and Replacing the Front Panel LED Cable Assembly Removing the Front Panel LED Cable Assembly Maintenance and Troubleshooting Introduction Static Precautions Routine Maintenance Cleaning Initial DEU Startup Troubleshooting Illustrated Parts Breakdown Exploded View Field Replaceable Units Hard Disk Drives Upgrades Replaceable Parts Cables A Specifications Specifications... A-2 Glossary Index iv Contents

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9 Using This Guide This Service Guide contains all the information found in the EXPRESS5800/ST1430 DEU User's Guide, including disassembly and reassembly instructions for all field replaceable unit's (FRUs). This guide also contains specifications and a complete parts list, including an exploded view of the DEU. If you have any comments regarding this service guide or if you think something needs to be changed, please contact us. Limit your comments to issues concerning the documentation only, and indicate which service guide you are referring to. For all other service related issues, use your normal feedback channels. This guide contains the following information:! Chapter 1, DEU Overview provides an overview of your DEU and describes its major system components. See this chapter to familiarize yourself with your DEU.! Chapter 2, Setting Up Your DEU tells you how to select a site, unpack the DEU, assemble the rack-mount subsystem, install the DEU into a system rack, connect the power cord(s), and power on the DEU. Also described are DEU to host configurations.! Chapter 3, Assembly and Disassembly provides you with instructions for removing and replacing all Field Replaceable Units (FRUs) in your DEU.! Chapter 4, Maintenance and Troubleshooting contains helpful information for maintaining your DEU and helps you to identify and solve problems that may occur during initial installation of your DEU or while using your DEU.! Chapter 5, Illustrated Parts Breakdown contains an exploded view and parts list for the DEUs major assemblies. Part numbers are also provided for optional hardware.! Appendix A, Specifications provides physical, electrical, and environmental specifications for the DEU and optional two-channel SCSI I/O Module option board.! Glossary defines the standard acronyms and technical terms associated with the DEU. Using This Guide vii

10 Text Conventions This guide uses the following text conventions. Warnings, cautions, and notes have the following meanings:! WARNING Warnings alert you to situations that could result in serious personal injury or loss of life.! CAUTION Cautions indicate situations that can damage the system hardware or software. Note: Notes give important information about the material being described.! Names of keyboard keys are printed as they appear on the keyboard. For example, Ctrl, Alt, or Enter.! Text or keystrokes that you enter appear as boldface type. For example, type abc123 and press ENTER.! File names are printed in uppercase letters. For example, AUTOEXEC.BAT. viii Using This Guide

11 Safety Notices! Caution: To reduce the risk of electric shock which could cause personal injury, follow all safety notices. The symbols shown are used in your documentation and on your equipment to indicate safety hazards.! Warning: The detachable power supply cords are intended to serve as the disconnect devices.!! Warning: This equipment has 3-wire, grounded power cords. To prevent electrical hazards, do not remove or defeat the ground prong on the power cords. Replace a power cord if it gets damaged. Contact your dealer for an exact replacement. In the U.S.A. and Canada, the power cord must be a UL-listed detachable power cord (in Canada, CSA-certified), type ST or SJT, 16 AWG, 3-conductor, provided with a molded-on NEMA type 5-15 P plug cap at one end and a molded-on cord connector body at the other end. The cord length must not exceed 9 feet (2.7 meters). Outside the U.S.A. and Canada, the plug must be rated for 250 VAC, 10 amp minimum, and must display an international agency approval marking. The cord must be suitable for use in the end-user country. Consult your dealer or the local electrical authorities if you are unsure of the type of power cord to use in your country. The voltage change occurs via a switch in the power supply.! Warning: Under no circumstances should the user attempt to disassemble the power supply. The power supply has no user-replaceable parts. Inside the power supply are hazardous voltages that can cause serious personal injury. A defective power supply must be returned to your dealer. Safety Notices for Users Outside of the U.S.A. and Canada! PELV (Protected Extra-Low Voltage) Integrity: To ensure the extra-low voltage integrity of the equipment, connect only equipment with mains-protected electricallycompatible circuits to the external ports.! Remote Earths: To prevent electrical shock, connect all local (individual office) computers and computer support equipment to the same electrical circuit of the building wiring. If you are unsure, check the building wiring to avoid remote earth conditions.! Earth Bonding: For safe operation, only connect the equipment to a building supply that is in accordance with current wiring regulations in your country. In the U.K., those regulations are the IEE. Using This Guide ix

12 Care and Handling Use the following guidelines to properly handle and care for your system. Protect the system from extremely low or high temperatures. Let the system warm (or cool) to room temperature before using it. Keep the system away from magnetic forces. Keep the system dry. Do not wash the system with a wet cloth or pour fluid into it. Protect the system from being bumped or dropped. Check the system for condensation. If condensation exists, allow it to evaporate before powering on the system. Keep the system away from dust, sand, and dirt. x Using This Guide

13 1 DEU Overview! Overview! SCSI Disk Drive Bays! SAF-TE Controller! High Capacity Cooling Fans! Power Supplies! I/O Panel Connectors! Security! Features and Indicators! Chassis Features

14 Overview The NEC Express5800/ST1430 Disk Expansion Unit (DEU) provides highly-available storage in a subsystem-based SAF-TE compliant RAID enclosure. See Figure 1-1. The SAF-TE compliant interface provides a standard, non-proprietary means for the RAID subsystem to support status signals, hot swapping drives and enclosure monitoring. Combined with the Redundant Array of Independent Disks (RAID) management software, additional levels of availability can be maintained. The DEU includes a fourteen hard disk drive enclosure designed to support a host system-based architecture. The architecture includes a single or dual channel SCSI backplane supporting up to fourteen Ultra160/m SCSI hard disk drives in the single channel configuration and seven drives on each channel in the dual channel configuration. The DEU has a relatively small form factor of 3U and is available as a rack-mount system that fits into a standard EIA 19-inch rack assembly. Figure 1-1. Rack-Mount DEU Front View (Front Bezel not Shown) The DEU features the following major components:! Easy cabling to one or more host bus adapters.! Hot-swap SCSI hard disk drive bays accessible from the front of the chassis. The drives can be swapped in or out of the DEU without powering it down, if a RAID controller is used. The bays support up to fourteen hard disk drives. Disk drives are high performance hot-swappable 7,200 and 10,000 RPM Ultra160/m SCSI hard disk drives. Drive capacities range from 9GB to 36GB.! Hardware monitors (temperature, fans, and voltage) and software monitors to indicate failures.! LEDs provide failure notifications. 1-2 DEU Overview

15 ! Remote Start control of disk drive spin up.! Complete support of SAF-TE standards (SCSI-Accessed Fault-Tolerant Enclosure) protocol.! Automatic SCSI bus termination. The DEU system is designed for minimum downtime. Thus, the DEU contains the following:! Up to two power supplies for power system redundancy. With two power supplies, the DEU will continue to operate with a single power supply failure. The selfcontained power supply units can be easily and safely hot-swapped from the rear of the chassis without shutting down the DEU.! SCSI disk drive bays accessible from the front of the chassis.! Hot-swap SCSI disk drive backplane, supporting fourteen drives. A failed drive can be removed and a new drive installed without system power being turned off, if an optional (RAID) controller is used.! High degree of SCSI disk fault tolerance and advanced disk array management features through the use of RAID technology.! Eight high capacity hot-swappable cooling fans. With eight cooling fans, the DEU will be adequately cooled even if one of the fans fails. SCSI Disk Drive Bays The DEU supports a variety of standard SCA-2 hard disk drives. The chassis includes fourteen hot-swappable SCSI hard disk drive bays for mounting up to fourteen SCA-2 hard disk drives in easily removable drive carriers. Each bay accommodates 1-inch hard disk drives. Note: The DEU contains a hot-swap backplane that requires an 80-pin single connector attachment (SCA-2) connector on the drives that you install. The design of the drive mounting uses a carrier rail system making it possible to "hot swap" a drive without shutting down the DEU, provided a RAID controller is installed in the host server. Note: All drives in a RAID array should be of the same capacity. If the drives are mixed, all of the drives in the array are assigned the capacity of the smallest size drive. DEU Overview 1-3

16 SAF-TE Controller The DEU has a SAF-TE (SCSI-Accessed Fault-Tolerant Enclosure) controller that provides an interface to the disk subsystem that supports status signals, hot swapping drives, and enclosure monitoring. The transport mechanism for the standardized alert detection and status reporting is the SCSI bus. Disk drives, power supplies, and cooling fans, are continually monitored and the conditions then reported over the SCSI bus to the host system. When used with RAID management software the user can be alerted of impending or imminent conditions requiring attention. This allows the user to react to conditions that could normally go unnoticed until data loss. High Capacity Cooling Fans The DEU contains two hot-swappable cooling fan modules as part of a highlyavailable, hot-swap design. Each fan module contains four high capacity cooling fans. With a total of eight cooling fans, the DEU will be adequately cooled even if one of the fans fails. Also, should any of the fans fail, they may be replaced without powering down the DEU. The fans draw air across the hard disk drives and electronics of the system and exhaust out through the rear panel. Power Supplies The DEU contains one auto-sensing 450 watt power supply at an operating frequency of 50/60 Hz. A second optional power supply may be added as part of a redundant hotswap design. With two power supplies installed, in the event of a power supply failure, the load is transferred to the remaining power supply without interruption to normal operation. Note: The power supplies are not hot swappable unless there are two supplies installed. The power supplies are designed to comply with existing emission standards and provide sufficient power for a fully loaded system configuration. I/O Panel Connectors The rear panel of the DEU may include up to two wide Ultra160/m SCSI bus connectors. In the standard single channel configuration, only one of the SCSI bus connectors is present to connect the DEU to the Disk Array Controller in your server. If the optional two-channel SCSI board is installed in the DEU, the DEU provides a twochannel SCSI interface, in which case both SCSI bus connectors are cabled to the Disk Array Controller in your server. 1-4 DEU Overview

17 Security A security lock on the front bezel of the DEU prevents unauthorized entry to the storage drives. Rack-mounted DEUs are also secured in the system cabinet by locking mechanisms installed on the system rack front and rear doors. Features and Indicators The DEU contains several features and indicators located on the front and rear of its chassis. The LED indicators assist in determining the current state of the DEU subsystem. The following subsections describe the front and rear chassis features and indicators of the DEU. Front Chassis Features and Indicators Figure 1-2 shows the features and indicators located on the front of the DEU. 1 2 C D E G H F B A A DEU Chassis The DEU chassis includes a single or dual channel SCSI backplane that supports up to fourteen SCSI hard disk storage drives in a single channel configuration or seven storage drives on each channel in a dual channel configuration. The SCSI hard disk storage drives can be swapped in or out of the DEU without powering down, if a RAID controller is used. B C SCSI Hard Disk Drive Bays DC Power ON/OFF LED The SCSI hard disk drive bays are accessible from the front of the chassis and the bay slots are numbered 1 through 14 from left to right. When green, power is present in system. When off, power is turned off or power source is disrupted. D Status LED 1 When green, the DEU is operating normally. When amber, a buzzer rings indicating that an error occurred in the DEU. Following are the types of status 1 errors that can be detected in the DEU. Power supply failed Disk drive failed Fan module failed Temperature error detected DEU Overview 1-5

18 E Status LED 2 When green, the DEU is operating normally. When amber, a buzzer rings indicating that an error occurred in the second channel I/O module. Following are the types of status 2 errors that can be detected in the second channel I/O module. I/O module not installed correctly Incorrect switch setting on the power backboard. F G Two-channel LED Disk Power/Access LED When Off, all hard disks are configured in one channel. When green, the hard disks are configured in two channels. When green, the hard disk drive is present and powered up. When flashing green, the hard drive is being accessed. H Disk Fault LED When amber, the hard drive failed. When flashing amber, the disk is rebuilding (in disk array configuration only). Figure 1-2. Front Chassis Features and Indicators Rear Chassis Features and Indicators Figure 1-3 shows the features and indicators located on the rear of the DEU. C D EFG I H I J K L M B A P O N Fan Module 2 Front Fan Module Rear 1-6 DEU Overview

19 A B C D AC Power Input Connector DC Power ON/OFF Switch Optional I/O Module Board Slot Standard Power Supply The AC power cord provided with the DEU is connected to the AC power input connector on the standard power supply. There is a separate AC power cord supplied with the optional power supply. If the DC Power ON/OFF switch is enabled it controls DEU power on/off. If the DC Power ON/OFF switch is disabled the host computer system controls the DEU power on/off. For details on enabling and disabling the DC Power ON/OFF switch, refer to "Configuring the DEU Switch Settings" in chapter 2. This is a single option board slot for the add-in I/O module board. When the optional I/O module board is added to the system it splits the SCSI backplane into two channels allowing up to seven SCSI hard disk drives on each channel. The standard power supply provides DC power to the DEU. E PWR LED When flashing green, ac power is supplied to the power supply. When green, system power is on. F PRFL LED When flashing amber, the life of the fans in the power unit expired. G FAIL LED When flashing amber, excessive current or a short circuit occurred in the DEU. When amber, excessive voltage occurred or there is a temperature error or fan failure detected in the power supply. H SCSI Bus Online LED When green, the connected SCSI bus is online. I I/O Module Status LED When amber, an error is detected in the I/O module. J K L M Fan Module LED 1-1 Fan Module LED 1-2 Fan Module LED 2-1 Fan Module LED 2-2 When green, normal fan operation. When amber, one of the fans in the fan module failed. N Switch Cover Covers and protects the DEU switch settings. O P SCSI 1 External Connector Optional Redundant Power Supply Slot Wide Ultra160/m SCSI cable connector that connects the DEU to the Disk Array Controller in the host computer. This slot is reserved for the optional redundant power supply. When the additional power supply is installed both the standard and optional redundant power supplies become hot swappable. Figure 1-3. Rear Chassis Features and Indicators DEU Overview 1-7

20 Chassis Features The DEU chassis is an easy-to-expand, fabricated metal structure. The major DEU internal components are shown in Figure 1-4. A Hard Disk Drive Bays (14) G Standard Power Supply Slot B SCSI Backplane H Optional Redundant Power Supply Slot C Fan Module 2 Connector (Group 2-2) I Single Channel I/O Module Board D Fan Module 1 Connector (Group 1-2) J Fan Module 1 Connector (Group 1-1) E Operation Mode Switches K Fan Module 2 Connector (Group 2-1) F Optional Two-Channel I/O Module Board L Power Backboard Figure 1-4. DEU Internal Features 1-8 DEU Overview

21 2 Setting Up The DEU! Overview! Selecting a Site! Unpacking the DEU and Rack Mounting Hardware! Rack-Mount Subsystem Assembly! Cabling! Connecting the Power Cord(s)! Powering On/Off! Configuring the DEU Switch Settings

22 Overview This chapter describes how to select a site, unpack the DEU and provides you with assembly information for preparing and mounting the DEU into a system rack. Also described are DEU to host cabling configurations, connecting the power cord(s), powering On/Off the DEU, and configuring the DEU switches. Selecting a Site The DEU operates reliably in a typical office environment. Choose a site that is:! Near grounded, three-pronged power outlets. Note: For the United States and Canada, this means a NEMA 5-15R outlets for VAC or NEMA 6-15R outlets for VAC. For other international sites, this means three-pronged power outlets applicable for the electrical code of the region.! WARNING Be sure the power service connection is through a properly grounded outlet.! CAUTION Be sure that the power plug from each of the power supplies is plugged into the same common ground power outlets.! Clean, dust-free, and well ventilated. Front and rear ventilating openings kept free of obstructions. Away from sources of heat, vibration or physical shock.! Isolated from strong electromagnetic fields and electrical noise produced by electrical devices (such as air conditioners, large fans, large electric motors, radio and TV transmitters, and high-frequency security devices)! Spacious enough to provide at least five inches (13 centimeters) behind the DEU and three inches (eight centimeters) on each side of the DEU for proper cooling, airflow, and cable clearance. Note: Provide an additional five inches (13 centimeters) behind the DEU to facilitate changing the self-contained hotswap power supply unit. 2-2 Setting Up The DEU! Easily accessible for DEU maintenance and installation of DEU upgrades.

23 Unpacking the DEU and Rack Mounting Hardware! WARNING The DEU weighs approximately 80 lbs (36 kg). If the DEU contains numerous optional devices and rack mount parts, it will weigh more. To avoid personal injury, make sure you have someone help you lift or move the DEU. Although the DEU and rack mount kit are inspected and carefully packaged at the factory, damage may occur during shipping. Follow these steps for unpacking. 1. Visually inspect the shipping containers; notify your carrier immediately of any damage. 2. Place the DEU shipping container on a flat, clean, stable surface. Carefully remove the DEU and set it aside. If the DEU is damaged, notify your server representative. See Figure 2-1, A. 3. Carefully remove the parts in the Accessories Kit and verify the contents. See Figure 2-1, B through Q and Table 2-1. If parts are missing or the hardware is damaged, notify your server representative. Note: The guide rails may already be installed on your DEU. See Figure 2-1, E. 4. Save the containers and packing materials for any future reshipment. Setting Up The DEU 2-3

24 A B C D E F G H I J K L M N O P Q Figure 2-1. DEU and Rack Mount Kit Parts 2-4 Setting Up The DEU

25 Table 2-1. DEU and Rack Mount Parts Reference Description Reference Description A Disk Expansion Unit (DEU) J Front Bezel (Key Attached to Rear of Bezel) B User's Guide K Arm Bracket C Floppy Disks L Tie Wraps (20) D Power Cord M Large M5 Screws (8) E Guide Rails N Washers (8) F Rack Bracket O M5 Screws (8) G Rail Bracket P Small Screws (4) H Arm Assembly Q Screws with Washers (8) I Template Rack-Mount Subsystem Assembly Before You Begin Before you begin, please review the following cautions, warnings, and general guidelines. Static Precautions! Avoid excessive vibration and shock. Dropping an electronic component can cause serious damage.! Do not disconnect or remove parts other than those specified in the procedure.! Do not touch I/O connector pins.! All screws are Phillips-head, unless otherwise specified. An electrostatic discharge (ESD) can damage disk drives, option boards, and other components. You can provide some ESD protection by wearing an antistatic wrist strap attached to chassis ground when handling DEU components. Electronic devices can be easily damaged by static electricity. To prevent damage, keep them in their protective packaging when they are not installed in the DEU. Setting Up The DEU 2-5

26 Preparing the Mounting Brackets and Rail Assemblies Each slide rail assembly consists of two rack mounting brackets (see Figure 2-2), an outer slide rail (A) and an inner component rail (D). These pieces can be separated and adjusted. The distance between the rack mounting brackets (A and D) is adjustable to fit between the front and rear rails of the system rack. The slide rails (C) attach to the rack mounting brackets (A and D), and the component rail (B) attaches to the side of the DEU chassis. C D A B Figure 2-2. Slide Rail Assembly (2) 1. Refer to Figure 2-3. Extend the component rail (C) from the slide rail (A) until the component rail release latch (B) clicks. Holding down the latch, slip the component rail (C) out of the slide rail (A). Remove the component rail from the other slide rail. A B C 2 T2R1-7.eps Figure 2-3. Removing the Component Rail from the Slide Rail. 2-6 Setting Up The DEU

27 2. Attach each small component rail to the DEU chassis as follows.! Referring to Figure 2-4, align the mounting holes in the component rail (A) to the threaded holes in the DEU chassis. The front end (B) of the component rail, which has one of its mounting holes closer to its front edge, is positioned toward the front of the DEU chassis. Its rear edge extends out approximately five inches from the rear of the DEU chassis.! Secure the rail to the chassis with three screws from the kit. B A Figure 2-4. Attaching the Component Rail to the DEU Chassis 3. Referring to Figure 2-5, loosen the eight screws securing the slide bracket (A) to its outer rail. Do this for both slide rail assemblies. Do not completely tighten the screws as the outer rails will be adjusted when the rail assembly is installed into the system rack. A Figure 2-5. Positioning the Slide Bracket Outer Rails Setting Up The DEU 2-7

28 Locating the DEU Mounting Position in the Rack 1. Select an appropriate location in the system rack cabinet for the rack-mount DEU. To improve rack stability, mount heavier items towards the bottom of the rack cabinet. Note: When planning the DEU configuration for the rack cabinet you should consider the length of the cables that interconnect DEU components. 2. The template supplied with your rack mount kit defines the location of the mounting screws in the system rack where the DEU is to be installed (see Figure 2-6). Place the template on the front and rear of the rack cabinet to show the mounting screw hole positions of the guide rail assemblies and mark their spots. Note: Ensure that the template is aligned properly so that the mounting screw hole cut outs are at the same height on each side of the cabinet and level with each other. Figure 2-6. Locating the Template in the Rack Cabinet Attaching the Mounting Bracket Assembly to the Rack The tabs on the front of the mounting bracket help to align it with the front of the rack frame. Cage nuts are not used for the front attachment of the mounting bracket. 1. Attach a mounting bracket assembly to the front of the rack using Phillipshead screws. Do not use washers. Do not tighten. See Figure Setting Up The DEU

29 A Figure 2-7. Attaching the Mounting Bracket Assembly to the Front of the Rack 2. Lengthen the rear mounting bracket as necessary and carefully align the rear mounting bracket assembly with the rear rack frame. If the depth of the rack is greater than the initial slide adjustments of the mounting bracket outer rail the two screws at the rear of the mounting bracket can be removed to extend the slide. See Figure 2-8. Figure 2-8. Lengthening the Rear Mounting Brackets 3. Secure the rear mounting bracket assembly to the back corner brace of the rack with two Phillips-head screws. The rear mounting bracket assembly attaches exactly like the front mounting bracket assembly shown in Figure Securely tighten the Phillips screws installed in steps 1 and Tighten the eight screws securing the rear mounting bracket to the slide rail assembly. See Figure 2-5 for the location of these screws. 6. Repeat Steps 1 through 5 for the other mounting bracket assembly. 7. Install a cage nut three holes below the bottom screw of each front mounting bracket. See Figure 2-7, A. The cage nuts are used to secure the DEU to the system rack. Setting Up The DEU 2-9

30 Attaching the Arm Bracket to the DEU Attach the arm bracket to the rear of the DEU (see Figure 2-9) as follows: 1. Align the arm bracket screw holes with the two middle screw holes on the rear left-hand side of the DEU chassis. 2. Secure the arm bracket to the DEU chassis with two Phillips-head screws. Figure 2-9. Attaching the Arm Bracket to the DEU Attaching the Arm Assembly to the Rack Mounting Bracket Attach the arm assembly to the rear of the left-hand side rack mounting bracket (see Figure 2-10) as follows: 1. Remove four screws on the rear of the left-hand side rack mounting bracket. 2. Loosen the remaining screws and slide the outer rail of the mounting bracket forward just enough so that the arm assembly can be attached to the rack mounting bracket. 3. Secure the arm assembly to the rack mounting bracket with the four Phillipshead screws removed in step 1 above. Figure Attaching the Arm Assembly to the Rack Mounting Bracket 2-10 Setting Up The DEU

31 Installing the DEU into the System Rack! WARNING To reduce the risk of personal injury or damage to the equipment, a minimum of two people MUST lift the DEU into the rack. The DEU weighs 80 lbs (36 kilograms). If the unit is to be loaded above chest level, a third person must assist in aligning the rails while the other two support the unit. 1. Pull the slide rails forward from the mounting brackets until the slide rails lock in place. 2. With one person grasping each side of the DEU, carefully align the DEU s component rails with the rack s slide rails plastic guides and slide the DEU into the rack. The component rail release latches (Figure 2-11, A) on either side of the DEU lock the DEU on to the slide rails. A Figure Installing the DEU into the System Rack Setting Up The DEU 2-11

32 ! WARNING To reduce the risk of personal injury, be careful when pressing the slide rail release latches and sliding the component into the rack. The slide rails could pinch your fingertips. 3. Depress the slide rail release latch and slide the DEU into the rack. The first time you slide the DEU into the rack, you may have to apply some pressure. After the first time, the ball bearings in the slide will move easily. 4. Secure the DEU to the System rack with two Phillips head screws. Attaching the Arm Assembly to the Arm Bracket Attach the end of the arm assembly to the arm bracket (see Figure 2-12) as follows: 1. Align the two middle screw holes of the arm assembly with the two screw holes in the arm bracket. 2. Secure the arm assembly to the arm bracket with two Phillips-head screws. Figure Attaching the Arm Assembly to the Arm Bracket 2-12 Setting Up The DEU

33 Installing the Front Bezel Install the front bezel on the DEU as follows: 1. Slide the tab (A) located on the left-hand side of the front bezel into the tab slot (B) on the front left-hand side of the chassis. See Figure B A 1 2 Figure Installing the Front Bezel 2. Close the right-hand side of the front bezel by pushing in until it clicks. 3. Insert the security key into the key lock and turn the key clockwise to lock the front bezel. See Figure Figure Locking the Front Bezel Setting Up The DEU 2-13

34 Cabling Termination Cable Dressing The DEU supports the American National Standard Institute SCSI parallel interface standards, referred to as Wide Ultra160/m. This standard is backward compatible with Fast SCSI (SCSI-2 with the Wide option), also referred to as Fast Wide SCSI. These standards define the mechanical, electrical, and timing requirements. In compliance with these interface standards, certain limitations apply when considering the configuration, lengths of cabling, and termination. SCSI cabling configurations require termination at both ends of the SCSI bus. If you are using a controller that provides Term Power, no change is required and SCSI bus termination will occur automatically. The Host Controller card provides termination for one end of the SCSI bus, while the DEU I/O module board provides final termination at the other end of the bus. All the interface and power cables connected to the rear of the DEU should be dressed and tie wrapped to the DEU arm assembly, as shown in Figure Route the cables so that they do not contact the door and guide rails on both sides of the system rack. Also, ensure that there is some slack on all the cables and especially the power cord to prevent it from being disconnected from the DEU when the unit is pulled forward in the rack. Figure DEU Rear Cable Dressing 2-14 Setting Up The DEU

35 Cabling Configurations The figures that follow illustrate SCSI cabling configurations: single channel, single host configuration (see Figure 2-16); dual channel, single host configuration (see Figure 2-17); and dual channel, dual host configuration. In the single channel, single host configuration shown in Figure 2-16, the first channel (channel 0) of the host controller connects to a bank of up to fourteen hard disk drives in the DEU. In the dual channel, single host configuration shown in Figure 2-17, each channel (channel 0 and channel 1) of the host controller connects to a bank of up to seven hard disk drives in the DEU. In the dual channel, dual host configuration shown in Figure 2-18, the first channel (channel 0) of each host controls up to seven hard disk drives in the DEU. Refer to the host controller and operating system software documentation for additional configuration information. Contact the local sales representative for information on cables used in the following configurations. Figure Single Channel, Single Host Configuration Setting Up The DEU 2-15

36 Figure Dual Channel, Single Host Configuration Figure Dual Channel, Dual Host Configuration 2-16 Setting Up The DEU

37 Connecting the Power Cord(s) The DEU contains a 450-watt power supply. The power supply is designed for automatic sensing of 115 or 230 Vac power, eliminating the need for a line voltage selector switch. The power supply operates at a frequency of 50/60 Hz. A second optional power supply may be installed providing redundant power. If two power supplies are installed and one fails, the second power supply will ensure the DEU continues to operate without interruption. Connect each power cord as follows. 1. Plug the female end of the AC power cord into its socket on the back of the power supply. See Figure Figure Connecting the AC Power Cord 2. Plug the male end of the power cord into NEMA 5-15R outlet for VAC or NEMA 6-15R outlet for VAC. If the power cord(s) supplied with the DEU are not compatible with the AC outlet in the region, obtain a suitable power cord that meets the following criteria.! The power cord must be rated for the available AC voltage and have a current rating that is at least 125% of the current rating of the DEU.! The power cord connector that plugs into the wall outlet must be terminated in a grounding-type male plug designed for use in the region. It must have certification marks showing certification by an agency acceptable in the region.! The power cord connector that plugs into the DEU must be an IEC- type CEE-22 female connector.! The power cord must be less than 1.8 meters (6.0 feet) long.! WARNING The DEU shipped with a power cord for each power supply. Do not attempt to modify or use the supplied AC power cord if it is not the exact type required. Setting Up The DEU 2-17

38 Powering On/Off There are two features available to control DC power in the DEU:! The DC power on/off switch located on the rear panel of the DEU.! A signal from the host computer. The power on/off switch controls DC power to the DEU when the power switch enable switch is enabled, see "Configuring the DEU Switches" later in this chapter. An external termination power signal from the host controls DC power to the DEU when the power switch enable switch is disabled, see "Configuring the DEU Switches" later in this chapter. Upon detection of the termination power signal, power is automatically turned on in the DEU. The DEU will power up automatically when the host system is powered up. However, a 5V standby voltage is present in the DEU as soon as the AC power cord is connected to the DEU. If the SCSI bus is divided into two channels, each of which is connected to a different host server, the first host server that is powered up controls the powering up of the DEU. This configuration is shown in Figure Configuring the DEU Switch Settings This subsection explains how to configure the DEU function select switch settings and the DEU operation mode switch settings. The switches are set correctly at the factory for your system configuration. If your system requires a switch change, change only the switch setting for that condition. Otherwise, keep the switches at their factory settings. The DEU function select switches are located on the rear panel of the DEU and are protected by a cover, see Figure The DEU function select switches consist of a single slide switch and a block of three DIP switches. A ON B C D A SCSI Bus Offline Switch The SCSI bus offline switch is used to enable or disable the SCSI bus connection with the host (NEC Express server). If the switch is set to ON, the SCSI bus is disconnected from the host. The default setting of the switch is OFF Setting Up The DEU

39 B Buzzer Mask Switch The buzzer mask switch is used to mask the buzzer, which rings when there is a device error. If the switch is set to ON, the buzzer will not ring. C Power Switch Enable Switch The power switch enable switch is used to enable or disable the DC power on/off switch. The DC power on/off switch controls DC power to the DEU when the power enable switch is set to On. D Disk Drive SCSI ID Change Switch The disk drive SCSI ID change switch is used to change the ID of the SCSI hard disk slots. See "Hard Disk" for the SCSI IDs. (see Figure 3-3 and Table 3-1). Figure DEU Function Select Switches The DEU operation mode switches are located on the power backboard, see Figure 2-21, A and Figure 1-4. The DEU operation mode switches consist of a block of four DIP switches. A ON SW SW1 ON (factory setting) Single initiator mode OFF Multi initiator mode SW2 ON (factory setting) Reserved for future use. OFF Setting Up The DEU 2-19

40 SW3 ON (factory setting) Reserved for future use OFF SW4 ON (factory setting) Reserved for future use OFF Figure DEU Operation Mode Switches To change a switch setting, use the following procedure. Note: DEU power must be completely off before setting the switches, otherwise the settings will not be recognized. 1. Power Off the DEU. 2. Locate the switch you want to change. 3. Set the appropriate switch On or Off. 4. Power On the DEU Setting Up The DEU

41 3 Assembly and Disassembly! General Information! Static Precautions! Preparing Your DEU for Upgrade! Accessing the DEU! Hard Disk Drives! Power Supply! Removing and Replacing the Top Cover! Replacing a Fan Module! Replacing the Fan Module Cable Assemblies! Adding the Optional I/O Module Board! Removing the DEU from the Rack! Installing the DEU into the System Rack! Removing and Replacing the Power Board! Removing and Replacing the SCSI Backplane! Replacing the DC Power ON/OFF Button Assembly! Removing and Replacing the Rear Panel Fan LED Cable Assembly! Removing and Replacing the Front Panel LED Cable Assembly

42 General Information! WARNING Before doing the procedures in this manual, make sure that your DEU is powered off and unplug the AC power cords from the back of the chassis. Failure to disconnect power before opening your DEU can result in personal injury and equipment damage.! CAUTION Operating your DEU with the covers removed can damage your DEU components. For proper cooling and airflow, always replace all covers before powering on your DEU. Static Precautions An electrostatic discharge (ESD) can damage disk drives, the DEU board, and other components. You can provide ESD protection by wearing an antistatic wrist strap attached to chassis ground when handling DEU components. Electronic devices can be easily damaged by static electricity. To prevent damage, keep them in their protective packaging when they are not installed in your DEU. 3-2 Assembly and Disassembly

43 Preparing Your DEU for Upgrade Depending on the upgrade, you may need one or more of the following tools:! Phillips screwdriver (#1 bit and #2 bit)! Flat-head screwdriver! Small needle nose pliers! Pen or pencil! ESD workstation or antistatic wrist strap (recommended) The following components may be added or removed from the DEU without removing the DEU from the system rack.! Hard disk dives! Power supplies! Fan modules, including fan module cable assemblies! I/O module board! LED cable assemblies! DC switch assembly The DEU must be removed from the system rack before these components are removed from the DEU.! Power board! SCSI backplane Assembly and Disassembly 3-3

44 Accessing the DEU! WARNING To reduce the risk of personal injury or damage to the equipment, a minimum of two people MUST lift the DEU out of the rack. The DEU weighs 80 pounds (36.4kg).! CAUTION To make the DEU lighter and more manageable and to protect your hard disk drives from damage, consider removing the hard disk drives in the DEU before removing the DEU from the rack. To extend the DEU from the system rack: 1. Open the front and rear doors to the system rack. 2. Terminate all applications and power down the DEU. 3. Unlock the front bezel using the security key and remove the bezel. See Figure Figure 3-1. Removing the Front Bezel 4. Loosen the four thumbscrews securing the DEU to the front of the system rack. 5. Pull the DEU fully out of the rack until the component rail release latches engage. The component rail release latches on either side of the DEU lock the DEU onto the slide rails. 3-4 Assembly and Disassembly

45 To secure the DEU into the system rack:! WARNING To reduce the risk of personal injury, be careful when pressing the component rail release latches and sliding the component in or out of the rack. The slide rails could pinch your fingertips. 1. Push in on the component rail release latches and slide the DEU into the rack. See Figure Tighten the four thumbscrews securing the DEU to the front of the system rack. 3. Install and lock the front bezel. See Figure 3-1. Figure 3-2. Component Rail Release Latch. Assembly and Disassembly 3-5

46 Hard Disk Drives Your DEU supports a variety of SCSI hard disk drives. The SCSI drives must use the industry standard 80-pin single connector attachment (SCA) connector. Contact your sales representative or dealer for a list of approved devices. The internal hard disk drives are located in the SCSI disk drive bays. If you are adding or removing a SCSI hard disk drive, consider the following:! CAUTION Do not hot swap a single-ended disk drive into an LVD-diskdrive only DEU for it may cause data corruption. The only way a single-ended disk drive can be used with an all LVDdisk-drive DEU is by first powering down the DEU, installing the single-ended disk drive, and then powering the DEU back up. Note: Installing a single-ended disk drive into an all LVD-disk-drive DEU causes all the drives to operate in the non-lvd mode, thereby reducing performance. SCSI ID Assignment Your DEU contains a single hard disk drive cage to hold a maximum of fourteen hard disk drives. Two variations of SCSI ID addresses are configurable by setting the I/O module SCSI ID switch ON or OFF. The SCSI ID switch is located on the I/O module board and is accessible at the rear panel of the DEU. Chapter 2 of this guide shows the location of the SCSI ID switch. The hard disk drive bay locations are shown in Figure 3-3. The SCSI address assignments for drives in the drive bays are shown in Table Figure 3-3. Hard Disk Drive Bay Locations 3-6 Assembly and Disassembly

47 Table 3-1. SCSI ID Address Assignments SCSI ID Address SCSI ID Address Bay Device SCSI ID Switch OFF SCSI ID Switch ON Bay Device SCSI ID Switch OFF SCSI ID Switch ON 1 First Hard Disk (Left side) Eighth Hard Disk Second Hard Disk Ninth Hard Disk Third Hard Disk 2 A 10 Tenth Hard Disk A 2 4 Fourth Hard Disk 3 B 11 Eleventh Hard Disk B 3 5 Fifth Hard Disk 4 C 12 Twelfth Hard Disk C 4 6 Sixth Hard Disk 5 D 13 Thirteenth Hard Disk D 5 7 Seventh Hard Disk 6 F 14 Fourteenth Hard Disk (Right side) F 6 - SAF-TE Controller Installing or Swapping a Hard Disk Drive in a Hot-swap Bay This procedure describes installing a new drive or swapping out a faulty drive from one of the fourteen hot-swap SCSI disk drive bays. Each drive must be installed in a drive carrier. Your DEU shipped from the factory with dummy drive carriers installed in all empty drive bay positions. These dummy drive carriers have gray handles. Drive carriers that have a hard disk drive installed in them have blue handles.! If installing new drives, follow an installation scheme starting with the left-hand drive. Fill the bays left to right.! If your DEU is connected to a RAID host controller, hard disk drives may be removed or installed without powering down the DEU; if your DEU is connected to a non-raid SCSI host controller, you must power down the host server controlling power to the DEU before hard disk drives may be removed and installed in the DEU! If an individual SCSI drive fault LED (amber light) is on steadily, this indicates that the drive has been flagged as faulty by the RAID host controller. Follow the procedure described in this section to remove the faulty drive and swap in a good one. Assembly and Disassembly 3-7

48 Note: ESD can damage disk drives, boards, and other parts. This DEU can withstand normal levels of environmental ESD while you are hot-swapping SCSI hard drives. However, we recommend that you do all procedures in this chapter only at an ESD workstation or provide some ESD protection by wearing an antistatic wrist strap attached to chassis ground any unpainted metal surface on your DEU when handling parts.! CAUTION Drive manufacturers caution against moving a disk drive that is still spinning because of possible damage to the drive. After you determine which drive has been flagged as faulty, the procedure is the same to swap a drive or to install one for the first time. Installing or Swapping a Hard Disk Drive 1. Open the front and rear doors of the system rack. 2. If your DEU is connected to a non-raid SCSI host controller, terminate all applications and power down the DEU. 3. Unlock the front bezel using the security key and remove the bezel. See Figure If installing a hard disk drive in a disk carrier for the first time, perform the following procedure; if swapping out an existing drive, go the Step 5.! Remove the dummy drive carrier (gray handle) from the SCSI hard disk drive bay in which you are installing the new disk drive. See Figure 3-4. Push downwards on the carrier release lever (B) to release the carrier from the bay. Grasp the carrier handle (A) and pull the carrier out of the bay. A B Figure 3-4. Removing a Disk Drive Carrier 3-8 Assembly and Disassembly

49 Note: The dummy carriers are provided to maintain proper cooling. Leave the dummy carriers in unused slots. (Keep all removed dummy carriers for future use.)! Go to step If swapping a hard disk drive, remove its carrier from the SCSI hard disk drive bay by performing the following procedures:! CAUTION Depending on the drive fault, the drive may be still spinning when you remove it. Follow the next steps exactly when removing drives.! Push downward on the carrier release lever (Figure 3-4, B) to release the carrier from the bay. Grasp the carrier handle (Figure 3-4, A) and pull the carrier out of the bay far enough to disengage the drive connector from the backplane. Wait 30 seconds until the drive spins down.! Remove the drive carrier from the drive bay. 6. Remove the hard disk drive from the disk carrier by removing the four screws that secure the drive to the carrier. See Figure Remove the new drive from its protective wrapper, and place it on an antistatic surface.! CAUTION Observe static precautions. Use an antistatic wrist strap. 8. Record the drive model and serial numbers in the equipment log. 9. Install the drive on the drive carrier (Figure 3-5).! Place the drive on the carrier, with its connector facing the back of the carrier.! Secure the drive in the carrier with the four screws supplied with the disk drive. Assembly and Disassembly 3-9