EXPRESS5800 3UDEU. Disk Expansion Unit User s Guide

Transcription

1 EXPRESS5800 3UDEU () Disk Expansion Unit User s Guide

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3 EXPRESS5800 3UDEU () Disk Expansion Unit User s 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: Copyright 2000 NEC Computers Inc. 15 Business Park Way Sacramento, CA All Rights Reserved

5 Contents Using This Guide...v Text Conventions... vi Safety Notices... vii Care and Handling... viii DEU Overview Overview SCSI Disk Drive Bays SAF-TE Board High Capacity Cooling Fans Power Supplies I/O Panel Connectors Security LED Indicators Front Panel LED Indicators Disk Drive Status Indicator LEDs Rear panel LED Indicators Chassis Features Rear Panel 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 Replacing the DEU Rack-mounting Brackets Preparing the Mounting Brackets and Rail Assemblies Attaching the Mounting Bracket Assembly to the Rack Installing the DEU into the System Rack Cabling Connections Termination Cabling Configurations Connecting the Power Cord(s) Powering On/Off Contents iii

6 Upgrading Your DEU General Information Static Precautions Preparing Your DEU for Upgrade Removing the DEU from the Rack Hard Disk Drives 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 Replacing a Fan Removing and Replacing the Top Cover Adding the Two-Channel SCSI Board Installing the DEU into the Rack Problem Solving Introduction Static Precautions Initial DEU Startup Troubleshooting Table Glossary Index iv Contents

7 Using This Guide This 3UDEU User s Guide provides a quick reference to information about your Disk Expansion Unit (DEU). Its goal is to familiarize you with your DEU and the tasks necessary for setting up your DEU, using the DEU, and configuring and upgrading the DEU. This guide assumes that the reader is already familiar with the host system and operating system environments in which the DEU will be installed. 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. DEU to host configurations are also described! Chapter 3, Upgrading Your DEU provides you with information for upgrading your DEU with additional disk drives, optional power supply, and the 2-channel SCSI interface board..! Chapter 4, Problem Solving contains helpful information for solving problems that might occur with your DEU.! Glossary defines the standard acronyms and technical terms associated with the DEU. Using This Guide v

8 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. vi Using This Guide

9 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 a 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 vii

10 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. viii Using This Guide

11 1 DEU Overview! Overview! SCSI Disk Drive Bays! SAF-TE Board! High Capacity Cooling Fans! Power Supplies! I/O Panel Connectors! Security! LED Indicators! Chassis Features! Rear Panel Features

12 Overview The 3UDEU Disk Expansion Unit (DEU) provides fault-tolerant storage in a subsystem-based SAF-TE compliant RAID enclosure. See Figure 1-1. The 3UDEU is referred to as the DEU within this guide. 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 fault tolerance can be maintained. The DEU includes an eight hard disk drive enclosure designed to support a host systembased architecture. The architecture includes a single or dual channel SCSI backplane supporting up to eight Ultra160/m SCSI hard disk drives in the single channel configuration and four drives on each channel in the dual channel configuration. The DEU is available as a rack-mount system and fits into a standard EIA 19-inch rack assembly. The DEU may also be installed into specific Express5800 Server models. 1-2 DEU Overview Figure 1-1. Rack-Mount DEU Front View 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 eight 1.6 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.

13 ! Remote Start control of disk drive spin up.! Complete support of SAF-TE v1.0 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.! SCSI disk drive bays accessible from the front of the chassis.! Hot-swap SCSI disk drive backplane, supporting eight 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.! Four high capacity hot-swappable cooling fans. With four 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 eight hot-swappable SCSI hard disk drive bays for mounting up to eight SCA-2 hard disk drives in easily removable drive carriers. Each bay accommodates either 1.0" or 1.6" 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

14 SAF-TE Board 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 assemblies as part of a fault-tolerant, hot-swap design. Each fan assembly contains two high capacity cooling fans. With a total of four 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 340 watt power supply at an operating frequency of 50/60 Hz. A second optional power supply may be added as part of a fault-tolerant hot-swap 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

15 Security Locks may be installed in lock loops located at the rear of the DEU to prevent unauthorized removal of the DEU power supplies. Rack-mounted DEUs are also secured in the system cabinet by locking mechanisms installed on the system rack front and rear doors. LED Indicators The DEU contains several indicator LEDs located on the front and rear of the unit to assist in determining the current state of the subsystem. Figure 1-2 shows the LEDs located on the front of the DEU. Subsections following this illustration describe the function of these LED indicators in detail. A B C D F G H E A. DC Power ON/OFF LED When green, power is present in system. When off, power is turned off or power source is disrupted. B. LVD Mode LED When green, the DEU is operating in LVD transfer mode (Ultra2 or Ultra160/m). C. Two-channel LED D. Power Supply Fault LED When Off, all hard disks are configured in one channel; When green, the hard disks are configured in two channels. When amber, a power supply has failed. A green LED on the failed power supply will be OFF. E. Fan Fault LED When amber one of the four fans has failed. Four amber indicators located on the rear panel indicate which fan has failed. Refer to the Rear Panel Indicators section. F. Drive Present LED G. Drive Activity LED H. Drive Status LED When green, the hard drive is present and powered up. When green, the hard drive is being accessed. When lit amber the hard drive has failed; when flashing amber, the disk is rebuilding. Figure 1-2. DEU LED Indicators DEU Overview 1-5

16 Front Panel LED Indicators DC Power LVD SCSI LED Mode Power Failure Fan Failure The Power-On LED (Figure 1-2,A) indicates if power has been applied to the DEU. The LED illuminates steady green to signify that the DEU system has power applied. Power is controlled from the host server. The LVD SCSI LED (Figure 1-2, B) indicates the negotiated transfer rate of the hard disk drives in the DEU. When green, the internal disk drives are using LVD SCSI transfer modes (Ultra2 or Ultra160/m). The Mode LED (Figure 1-2, C) indicates the configuration of the hard disk drives in the DEU. The LED will be OFF when the DEU is configured for single-channel operation and will be lit green to indicate the DEU is configured for dual-channel operation. An optional board is required in the DEU for the dual channel configuration. The Power Supply Status LED (Figure 1-2, D) indicates the condition of the system power supplies. The LED will be OFF when the power supplies are functioning normally and will change to amber if one of the power supplies should fail. This condition will only be indicated if a RAID controller is present or if system management software (ESMPRO) is running on the host. The Power-On LED on the rear of the power supply turns off indicating a defective supply. The Fan Status LED (Figure 1-2, E) indicates the condition of the four cooling fans located in the DEU behind the SCSI backplane. The LED will be OFF when all of the fans are functioning normally and will change to amber if any of the fans fail. This condition will only be indicated if a RAID controller is present or if system management software (ESMPRO) is running on the host. Disk Drive Status Indicator LEDs Drive Present Drive Activity Disk Drive Status indicator LEDs for each disk drive are provided to aid in showing a specific drive's activity and in identifying the failed (or problem) disk drive. These LEDs are aligned with their respective drive/drive carrier. The Drive Present LED (Figure 1-2, F) illuminates green to indicate the hard disk drive in this disk slot is properly installed and powered up. When illuminated steady or blinking green, the Drive Activity LED (Figure 1-2,G) indicates normal drive activity for the hard disk drive in this slot. 1-6 DEU Overview

17 Drive Status When illuminated amber, the Drive Status LED (Figure 1-2, H) indicates a failed or problem drive. The conditions that can cause this are listed below.! Faulty or rebuild stopped (steady amber)! Rebuild in progress (blinking amber) Rear Panel LED Indicators Figure 1-3 shows the LEDs located on the rear of the DEU. Subsections following this illustration describe the function of these LED indicators in detail. A Power Supply Figure 1-3. DEU Rear Panel LEDs The Power Supply LED (Figure 1-3, A) illuminates green to indicate the power cord is connected to an AC power source and power has been applied to the power supply. The LED is off to signify that the ac power has been interrupted or the power supply has failed. DEU Overview 1-7

18 Fan Alarms The four Fan Alarm LEDs (Figure 1-3, 1, 2, 3, 4) monitor the status of the four fans located in the DEU. An amber LED indicates that the fan has failed. Figure 1-3 also shows the physical location of the fans indicated by the four LEDs located on the rear panel. Two fan assembles, each containing two fans, are easily removed from the top of the DEU in the unlikely event of a fan failure. Chassis Features The DEU chassis (Figure 1-4) is an easy-to-expand, fabricated metal structure. The major DEU internal components are shown in the following illustration. H I G F E D C J K B A Front A. Hard Disk Drive Bays (8) G. Optional Two-Channel SCSI Interface Board B. SCSI Backplane H. Optional Redundant Power Supply Slot C. Power and GEM Board I. Basic Power Supply Slot D. Fan Assembly Connector (Fan1 and Fan2) J. Right Power and GEM Board Ejector Lever E. Channel 1 SCSI Interface Connector (P1) K. Fan Assembly Connector (Fan3 and Fan4) F. Left Power and GEM Board Ejector Lever Figure 1-4. DEU Internal Features 1-8 DEU Overview

19 Rear Panel Features Figure 1-5 shows the location of rear system features and connectors. B C D E F G A K J I H A. Component Rail (Right Side) G. Fan3 Alarm LED (See Figure 1-3) B. AC input power connector. Supplies AC power to the power supply. C. DC Power-on LED. Lit when AC power is connected to the power supply and the power supply is functioning normally. Off if the power supply fails or the AC power to the power supply has been interrupted. H. Fan1 Alarm LED (See Figure 1-3) I. Fan2 Alarm LED (See Figure 1-3) D. Optional Redundant Power Supply slot. J. Fan4 Alarm LED (See Figure 1-3) E. Channel 2 External Wide SCSI Connector Input (Optional) K. Standard Power Supply Unit. Supplies power to the DEU. F. Channel 1 External Wide SCSI Connector Input Figure 1-5. Rear Panel Features DEU Overview 1-9

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

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. DEU to host configurations are also described. 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.! Easily accessible for DEU maintenance and installation of DEU upgrades. 2-2 Setting Up Your DEU

23 Unpacking the DEU and Rack Mounting Hardware! WARNING The DEU weighs approximately 44 pounds (20.0 kg). If the DEU contains numerous optional devices, 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 is 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 Rack Mount Kit parts and verify the contents. See Figure 2-1, B, C, D and E and Table 2-1. If parts are missing or the hardware is damaged, notify your server representative. Note: The mounting brackets (Figure 2-1, D, E) may already be installed on your DEU. 4. Save the containers and packing materials for any future reshipment. A E B D C Figure 2-1. Rack Mount Kit Parts Setting Up Your DEU 2-3

24 Table 2-1. DEU and Rack Mount Parts Reference A B Description Disk Expansion Unit (DEU) Hardware C Slide Rail Mounting Assemblies (2) D E Left 2.5-inch DEU Mounting Bracket Right 2.5-inch DEU Mounting Bracket 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. 2-4 Setting Up Your DEU

25 Replacing the DEU Rack-mounting Brackets Note: The mounting brackets (Figure 2-2, B, C) may already be installed on your DEU. If already installed, proceed to the next section. Two types of DEU rack-mounting brackets are included with your DEU. The long mounting brackets are approximately 5 inches in length and are shown in Figure 2-2, A. The short mounting brackets are 2 ½ inches in length and are shown in Figure 2-2, B and C. Your DEU requires the short mounting brackets to securely fasten it to the rack frame. If your DEU was shipped with the long mounting brackets installed, perform the following procedure to install the short mounting brackets. C A B Left Right Figure 2-2. DEU Rack-mounting Brackets 1. Remove four screws securing each long mounting bracket to the DEU (Figure 2-2, A). Set the mounting brackets aside and save the screws for use in the next two steps. 2. Position the left short mounting bracket on the left side of the DEU as shown and secure with two of the screws saved in Step 1 (Figure 2-2, B). Refer to Figure 2-2 to identify the left and right mounting brackets. 3. Position the right short mounting bracket on the right side of the DEU as shown and secure with two of the screws saved in Step 1 (Figure 2-2, C). Setting Up Your DEU 2-5

26 Preparing the Mounting Brackets and Rail Assemblies Each slide rail assembly consists of two rack mounting brackets, an outer slide rail and an inner component rail. See Figure 2-3. 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 2-3. Slide Rail Assembly (2) 1. Refer to Figure 2-4. 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 out of the slide rail, as shown in Figure 2-4. Remove the component rail from the other slide rail. A B C 2 T2R1-7.eps Figure 2-4. Removing the Component Rail from the Slide Rail. 2-6 Setting Up Your DEU

27 2. Attach each small component rail to the DEU chassis as follows.! Referring to Figure 2-5, align the mounting holes in the component rail (A) to the threaded holes in the DEU chassis. The right angle end (B) of the component rail is positioned toward the front of the DEU chassis.! Secure the rail to the chassis with three screws from the kit. B A Figure 2-5. Attaching the Component Rail to the DEU Chassis 3. Referring to Figure 2-6, remove the three screws securing the slide rail (A) to the rear mounting bracket (B). These screws are installed into a rectangular plate (C) located behind the rear mounting bracket. Position the rear mounting bracket exactly as shown and secure with the three screws. Do not completely tighten the screws as the rear mounting bracket will be adjusted when the rail assembly is installed into the system rack. C B A Figure 2-6. Positioning the Rear Mounting Bracket 4. Select an appropriate location in the 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. Setting Up Your DEU 2-7

28 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 2-7. 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. 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 three screws securing the rear mounting bracket to the slide rail assembly. See Figure 2-6 for the location of these three screws. 6. Repeat Steps 1 through 5 for the remaining mounting bracket assembly. 7. Install a cage nut two holes above the top screw of each front mounting bracket. See Figure 2-7, A. These cage nuts are used to secure the DEU to the system rack. 2-8 Setting Up Your DEU

29 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 44 pounds (20.0 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.! CAUTION To make the DEU lighter and more manageable, do not install hard disk drives in the DEU until after you load the DEU into the rack. 1. Pull the slide rails forward from the mounting brackets until the slide rail locks 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 and slide the server into the rack. The component rail release latches (Figure 2-8, A) on either side of the DEU lock the DEU on to the slide rails. A Figure 2-8. Installing the DEU into the System Rack Setting Up Your DEU 2-9

30 ! 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. Cabling Connections Termination 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 board provides final termination at the other end of the bus. Cabling Configurations Figures 2-9 through 2-11 illustrate SCSI cabling configurations: single channel, single host configuration; dual channel, single host configuration; and dual channel, dual host configuration. In the single channel, single host configuration shown in Figure 2-9, channel 0 of the host controller connects to a bank of up to eight disk hard disk drives in the DEU. In the dual channel, single host configuration shown in Figure 2-10, each channel of the host controller connects to a bank of up to four disk hard disk drives in the DEU. In the dual channel, dual host configuration shown in Figure 2-11, each host controls up to four hard disk drives in the DEU. Refer to the host controller and operating system software documentation for additional configuration information Setting Up Your DEU

31 Contact the local sales representative for information on cables used in the following configurations. Host Controller (RAID or SCSI) Ch 0 Disk Expansion Unit Host System Figure 2-9. Single Channel, Single Host Configuration Host Controller (RAID or SCSI) Ch 1 Ch 0 Disk Expansion Unit Host System Figure Dual Channel, Single Host Configuration Host Controller (RAID or SCSI) Host Controller (RAID or SCSI) Ch 0 Ch 0 Host System A Disk Expansion Unit Host System B Figure Dual Channel, Dual Host Configuration Setting Up Your DEU 2-11

32 Connecting the Power Cord(s) The DEU contains a 340-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.! You may need to slide the plug-lock away from the socket to allow insertion of the plug into the socket.! To unplug the power cord, slide the lock away from the plug while carefully pulling it out of the socket. Do not pull on the cord, only the plug. 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 Your DEU

33 Powering On/Off Power to the DEU is controlled by an external termination power signal from the host. Upon detection of the termination power signal, power is automatically switched 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 Setting Up Your DEU 2-13

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35 3 Upgrading Your DEU! General Information! Static Precautions! Preparing Your DEU for Upgrade! Removing the DEU from the Rack! Hard Disk Drives! Power Supply! Replacing a Fan! Removing and Replacing the Top Cover! Adding the 2-Channel SCSI Board! Installing the DEU into the Rack

36 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 Upgrading Your DEU

37 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 maybe added or removed from the DEU without removing the DEU from the system rack.! Hard Disk Drives! Power Supplies! Fan Assemblies The DEU must be removed from the system rack before these components are removed from the DEU.! Optional 2-Channel SCSI Interface Board Upgrading Your DEU 3-3

38 Removing the DEU from the Rack! 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 44 pounds (20.0 kilograms).! 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. 1. Terminate all applications and power down the host server(s) connected to the DEU. Powering down the host will also power down the DEU. 2. Open the front and rear doors to the system rack. 3. Tag and remove cables connected to the DEU. 4. Remove the two screws securing the DEU to the front of the system rack. 5. Pull the DEU 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.! 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.! WARNING A minimum of two persons is required when performing the next step. 6. With one person grasping each side of the DEU, depress the component rail release latches and slide the DEU out the rack. Place the DEU on a flat clean surface. See Figure Upgrading Your DEU

39 Hard Disk Drives Figure 3-1. Component Rail Release Latch. 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 device, 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 containing one SAF-TE controller and slots to hold a maximum of eight hard disk drives. SCSI ID addresses for the SAF-TE controller and drives are identical whether your DEU is configured for one or two SCSI channels. The hard disk SCSI address assignments for drives in the drive cage are shown in Figure 3-2 and Table 3-1. Note: When the DEU is configured for two-channel operation, there is one SAF-TE controller on each SCSI bus, with a SCSI ID of 4. Upgrading Your DEU 3-5

40 Hard Disk Drive Bays ID0 ID1 ID2 ID3 ID8 ID9 IDA IDB Figure 3-2. SCSI ID Address Assignments Table 3-1. SCSI ID Address Assignments Bay Device SCSI ID Address 1 First Hard Disk (Left side) 0 2 Second Hard Disk 1 3 Third Hard Disk 2 4 Fourth Hard Disk 3 5 Fifth Hard Disk 8 6 Sixth Hard Disk 9 7 Seventh Hard Disk A 8 Eighth Hard Disk (Right side) B - SAF-TE Controller 4 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 eight hot-swap SCSI disk drive bays. The SCSI drives use the industry standard 80-pin Single Connector Attachment (SCA) connector. Each drive must be installed in a drive carrier. Note: To order a disk with a carrier, contact your sales representative or dealer.! 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 3-6 Upgrading Your DEU

41 ! 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. 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. If your DEU is connected to a non-raid SCSI host controller, terminate all applications and power down the host server(s) connected to the DEU. Powering down the host will also power down the DEU. 2. Open the front door of the system rack. 3. If installing a hard disk drive in a disk carrier for the first time, perform the following procedures:! Remove the dummy sponge from the bay in which you are installing the new disk drive. See Figure 3-3 Figure 3-3. Removing the Dummy Sponge Upgrading Your DEU 3-7

42 Note: The dummy sponge is provided to maintain proper cooling. Leave the dummy sponges in unused slots. (Keep all removed dummy sponges for future use.)! If installing a new drive, 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.! Pull the disk carrier handle out.! Pull the faulty disk drive out of the bay far enough to disengage the drive connector from the backplane. Wait 30 seconds until the drive spins down.! Remove the carrier from of the drive bay. 5. Remove the hard disk drive from the disk carrier by removing the four screws. See Figure Remove the new drive from its protective wrapper, and place on an antistatic surface.! CAUTION Observe static precautions. Use an antistatic wrist strap. 7. Record the drive model and serial numbers in the equipment log. 8. Install the drive on the drive carrier (Figure 3-3).! Place the drive on the carrier, with its connector facing the back of the carrier.! Turn the drive and carrier over and secure the drive in the carrier with the four screws supplied with the disk drive. 3-8 Upgrading Your DEU

43 Figure 3-3. Securing the Drive in the Carrier 9. Install the drive carrier with drive into the bay (Figure 3-4) as follows:! Open the drive carrier handle.! Align the drive carrier with the bay guide rails.! Slide the drive carrier into the bay until it docks with the SCSI backplane connector.! Push on the carrier until the drive is completely seated into the SCSI backplane connector.! Press the carrier handle into its locked position so that it is flush with the front of the carrier. Right Wrong Figure 3-4. Installing a Disk Carrier into the Bay 10. Close the front door on the system rack. Upgrading Your DEU 3-9

44 Power Supply Your DEU may contain one or two power supplies. The second power supply is optional and provides a redundant configuration that ensures continued operation of the DEU in the unlikely event one of the power supplies fails. This section provides procedures for installing a second power supply as well as removing a faulty power supply. Installing the Optional Power Supply To install the optional power supply: 1. Open the rear door of the system rack. 2. Loosen the two screws on the blank cover attached to the power supply cage on the rear of the DEU and remove the blank cover. See Figure 3-5, A. A Figure 3-5. Removing the Power Supply Cage Blank Cover 3. Referring to Figure 3-6, slide the optional power supply into the chassis and tighten the thumbscrews (A) that secure the power supply to the cage. A Figure 3-6. Installing the Power Supply 4. Connect the power cord to the input receptacle on the rear of the new power supply and the AC outlet Upgrading Your DEU

45 5. Observe the green LED on the installed power supply is lit indicating the supply is operational. 6. Close the system rack rear door. Replacing a Power Supply When a power supply unit fails, the power failure LED on the front of DEU lights and the green LED on the failed power supply is extinguished. See Figure 1-2 for the location of the front panel power failure LED. 1. If the optional power supply is not installed, power down the host server(s) connected to the DEU. Powering down the host will also power down the DEU; if the optional power supply is installed, the faulty power supply may be removed without powering down the DEU. 2. Open the rear door of the system rack. 3. Disconnect the AC cable from the failed power supply unit. 4. Loosen the two thumbscrews (see Figure 3-6) that secure the power supply assembly to the rear panel. 5. Remove the power supply from the rear of the DEU chassis. 6. Referring to Figure 3-6, slide the replacement power supply into the chassis and tighten the thumbscrews (A) that secure the power supply to the cage. 7. Connect the power cord to the AC outlet and to the input receptacle on the rear of the new power supply. 8. Close the system rack rear door and power up the host server, if necessary. 9. Observe the green LED on the installed power supply is lit indicating the supply is operational. Upgrading Your DEU 3-11

46 Replacing a Fan The DEU contains two hot-swappable cooling fan assemblies as part of a faulttolerant, hot-swap design. Each fan assembly contains two high capacity cooling fans. Should any of the fans fail they may be replaced without powering down the DEU. Figure 3-7A shows the location of the two fan assemblies. A group of four LED indicators, located on the rear panel of the DEU, monitor the status of each of the four fans in the DEU. Should one of the fans fail, its corresponding LED will light to indicate the fan has failed. Referring to Figure 3-7, the fan LEDs on the rear panel of the DEU are numbered 1 through 4 and correspond to the fan numbers shown next to the fan assemblies A and B in this illustration. Fans 1 and 2 are located in fan assembly B, while fans 3 and 4 are located in fan assembly A A C B To replace a fan: Figure 3-7. Fan Assembly Locations 1. Open the front and rear doors of the system rack. 2. Observe the LEDs located on the rear panel of the DEU and determine which of the fans requires replacement. See Figure Remove the screws securing the DEU to the front rails of the system rack Upgrading Your DEU

47 4. Pull the DEU 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. 5. Select the fan assembly you are removing and squeeze its latches (Figure 3-7, C) towards each other while lifting the assembly up and away from the DEU. Set the fan assembly on a clean dry surface. 6. Install the replacement fan assembly into the DEU.! 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. 7. Push in on the component rail release latches and push the DEU into the rack. See Figure Secure the DEU to the system rack frame with the screws removed in Step 3. Upgrading Your DEU 3-13

48 Removing and Replacing the Top Cover 1. Remove the DEU from the system rack by following procedures previously described in this chapter. 2. Remove the fan assemblies from the DEU chassis. Squeeze the fan assembly latches (Figure 3-8, B) towards each other while lifting the assembly up and away from the DEU. Remove both fan assemblies and set them aside. 3. Remove the two screws securing the top cover to the rear of the DEU chassis. See Figure Slide the top cover towards the rear of the DEU chassis until its tab fasteners unlock. Lift the top cover up and away from the chassis. 5. Reverse Steps 1 through 4 to install the top cover and fan assemblies and to install the DEU into the system rack. A B Figure 3-8. Removing the DEU top Cover 3-14 Upgrading Your DEU

49 Adding the Two-Channel SCSI Board! CAUTION Observe static precautions. Use an antistatic wrist strap. 1. Remove the DEU from the system rack by following procedures previously described in this chapter. 2. Remove the DEU top cover by following procedures previously described in this chapter. 3. Remove the socket cover, if present, from the two-channel SCSI Board connector P2 (see Figure 3-9, A). 4. Remove the screw (Figure 3-9, B) securing the top left corner of the power supply cage (as viewed from the front of the DEU). Keep this screw for later use. B A Figure 3-9. Preparing to Install the Two-Channel SCSI Board 5. Remove the two screws securing the blank plate covering the optional SCSI connector cutout on the rear panel of the DEU (Figure 3-10, A). Remove the blank cover. Upgrading Your DEU 3-15