Compaq StorageWorks UltraSCSI RAID Enclosure (DS–BA370 Series) User's Guide Part Number: EK–BA370–UG. C02/387403–001 September 1998 The DS–BA370 series UltraSCSI RAID rack-mountable enclosure is the basic building block of UltraSCSI RAID subsystems. This guide and its related publications comprise the basic documentation set for these subsystems.
September 1998 While Compaq Computer Corporation believes the information included in this publication is correct as of the date of publication, it is subject to change without notice.
Table of Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii Manufacturer’s Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix Chapter 1, Introducing the UltraSCSI RAID Enclosure An UltraSCSI Bus Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents Chapter 2, Operating the UltraSCSI Enclosure UltraSCSI Configuration Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 UltraSCSI RAID Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2 UltraSCSI Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents Maintenance Terminal Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6 Blower Fault LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6 Configuring the EMU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–7 Connecting the EMU Communication Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–7 EMU Firmware . . . . . . .
Table of Contents Error Reporting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–5 Incompatible I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–5 TERMPOWER Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6 Rules for Expanding an UltraSCSI Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents Guidelines for Replacing a Disk Drive SBB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–6 The SBB Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–6 Prerequisites for Replacing a Disk Drive SBB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–7 Disk Drive SBB Replacement Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–7 Hot Swap. . . . . . . . . . . . . .
Table of Contents Loading the Microcode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–4 Restarting the Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–6 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Figures Figure 1–1 DS–BA370 Series UltraSCSI Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1 Figure 1–2 Typical DS–BA370 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3 Figure 1–3 Typical Enclosure Bus and Device Addressing. . . . . . . . . . . . . . . . . . . . . . . . . 1–6 Figure 1–4 DS–BA370 Status LEDs Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–11 Figure 1–5 RA7000 Status LEDs Locations . . . . .
List of Figures Figure 4–7 Expansion Enclosure Address 3: Shelf and SCSI Bus IDs . . . . . . . . . . . . . . 4–10 Figure 5–1 Single-Ended I/O Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1 Figure 5–2 I/O Module Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2 Figure 5–3 I/O Module Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Tables Table 1–1 UltraSCSI Subsystems Capacities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–7 Table 2–1 Compaq-Supported PVA SCSI ID Switch Settings . . . . . . . . . . . . . . . . . . . . . . 2–5 Table 2–2 Turning On the Subsystem Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–7 Table 2–3 Turning Off the DC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–9 Table 2–4 Restoring the DC Power . . . .
List of Tables Table 5–2 UltraSCSI Bus Expansion Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–8 Table 5–3 Preliminary Cabling Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–9 Table 5–4 UltraSCSI Bus Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–10 Table 5–5 Shutting Down the UltraSCSI Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface The Compaq StorageWorks UltraSCSI RAID Enclosure (DS–BA370 Series) User’s Guide describes the functions, operations, components, configurations, assembly, and specifications of this enclosure. Intended Audience This document is for use by personnel responsible for designing, configuring, assembling, installing, and operating UltraSCSI RAID subsystems using a DS–BA370 series enclosure mounted in either a data center cabinet or a departmental server cabinet.
Preface Chapter 4 This chapter describes the power verification and addressing (PVA) assembly operation, functions, uses, configuration, and replacement procedures. Chapter 5 This chapter describes the single-ended input/output (I/O) module operation, functions, uses, configuration, and replacement procedures. Chapter 6 This chapter describes the enclosure power distribution components operation, functions, uses, configuration, and replacement procedures.
Preface Documentation Conventions Table 1 describes the conventions for this publication: Table 1 Documentation Conventions boldface type Boldface type indicates the first instance of terms being defined in the text, the glossary, or both. Hypertext links connect each glossary term within a chapter to its definition in the glossary. Clicking on a glossary term within a chapter activates the link. italic type Italic type emphasizes important imformatioin and indicates complete titles of manuals.
Preface Table 1 Documentation Conventions (Continued) Note Notes contain information that might be of special interest to the user. Single-ended SCSI bus. Differential SCSI bus. Related Documents Table 2 lists publications that contain additional information about the UltraSCSI RAID subsystem: Table 2 Related Publications Publication Title Order Number HSZ70 Array Controller HSOF Version 7.0 CLI Reference Manual EK–CLI70–RM HSZ70 Array Controller HSOF Version 7.
Preface Table 2 Related Publications (Continued) Publication Title Order Number See system-specific “Getting Started” manual Operating System Specific Release Notes Improving UltraSCSI RAID Subsystem Operation EK–BA370–UP Installing an External Cache Battery Cable EK–HSZ70–TE Installing a Host Bus Cable Ferrite Bead EK–SWXES–IG StorageWorks Solutions SBB User’s Guide EK–SBB35–UG UltraSCSI Subsystem Standby Power Operation EK–POWER–IG UltraSCSI RAID Data Center Cabinet (DS–SW600–Series) Install
Manufacturer’s Declarations This section discusses electromagnetic compatibility and accoustic noise declarations. Electromagnetic Compatibility This CE–Mark Class A certified product can be installed in a commercial or an office environment. WARNING! This is a Class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. ACHTUNG! Dieses ist ein Gerät der Funkstörgrenzwertklasse A.
Manufacturer’s Declarations Acoustic Noise Declarations Compaq® declares that the acoustic values of this product are as shown in Table 1 and Table 2. Table 1 Acoustics – Declared Values per ISO 9296 and ISO 7779 Product Sound Power Level LWAd, B Sound Pressure Level LpAm dBA (bystander positions) Idle Operate Idle Operate RAID Array 7000 Subsystem (DS–SWXRA–HA) with: 2 — ac input boxes (DS–BA35X–HE) 8 — 180 W shelf power supplies (DS–BA35X–HH) 24 — disk drives (2, 4, 9, or 18 GB) 6.1 N/A 48.
Manufacturer’s Declarations Table 2 Schallemissionswerte – Werteangaben nach ISO 9296 und ISO 7779/DIN EN27779 Gerät Schalleistungspege l LWAd, B Schalldruckpegel LpAm, dBA (Zuschauerpositionen) Leerlauf Betrieb Leerlauf Betrieb RAID Array 7000 Subsystem (DS–SWXRA–HA) with: 2 — ac input boxes (DS–BA35X–HE) 8 — 180 W shelf power supplies (DS–BA35X–HH) 24 — disk drives (2, 4, 9, or 18 GB) 6,1 N/A 48,4 48,4 RAID Array 7000 Subsystem (DS–SWXRA–HA) with: 2 — ac input boxes (DS–BA35X–HE) 8 — 180 W
1 Introducing the UltraSCSI RAID Enclosure The Compaq StorageWorks™ UltraSCSI RAID (redundant array of independent disks) enclosure (DS–BA370 series) shown in Figure 1–1 is the basic building block for Compaq single-ended UltraSCSI RAID subsystems.
Introducing the UltraSCSI RAID Enclosure This enclosure cannot function until: 1. It is installed in an UltraSCSI data center cabinet (DS–SW600 series) or an UltraSCSI departmental server cabinet (DS–SWXRE series). 2. 3.5-inch StorageWorks building block (SBB) disk drives are installed. 3. A compatible array controller is installed and connected to a host computer or adapter. 4. The enclosure and the subsystem are configured for UltraSCSI operation.
Introducing the UltraSCSI RAID Enclosure Figure 1–2 Typical DS–BA370 Applications 0 1 0 0 0 1 0 1 0 0 0 1 0 1 0 0 1 0 CXO6264A UltraSCSI RAID Enclosure 1–3
Introducing the UltraSCSI RAID Enclosure An UltraSCSI Bus Overview UltraSCSI was developed by Digital Equipment Corporation (now Compaq Computer Corporation) and subsequently standardized by the ANSI (American National Standards Institute) SCSI (small computer system interface) committee as standard X3T10. UltraSCSI is a technology that incorporates several improvements over a Fast 10 SCSI bus.
Introducing the UltraSCSI RAID Enclosure Product Description The UltraSCSI enclosure is a rack-mountable storage subsystem that accommodates the following components: • Depending upon the configuration, a minimum of zero, or a maximum of two, UltraSCSI controllers with cache modules1, such as the DS–HSZ70 series. • An environmental monitoring unit (DS–BA35X–EB), the EMU, that monitors enclosure operation, detects and reports error conditions, and can automatically initiate corrective actions.
Introducing the UltraSCSI RAID Enclosure Expansion enclosures have filler panels installed in the controller and cache module slots that improve air flow and reduce electromagnetic interference (EMI) radiation. The blank panels in the controller B and cache module B locations improve air flow and control EMI in enclosures with only one controller. The enclosure backplane eliminates the need for cables to connect the six vertical buses to the four horizontal drive SBB shelves.
Introducing the UltraSCSI RAID Enclosure • EMU • PVA • UltraSCSI bus array controllers and cache modules • Disk drives • I/O modules UltraSCSI RAID Subsystem A subsystem is one or more departmental server cabinets or data center cabinets with an enclosure. Each subsystem requires a master enclosure with an UltraSCSI controller installed. Installing one or two expansion enclosures and connecting them with cables creates an “expanded” subsystem.
Introducing the UltraSCSI RAID Enclosure PVA Each PVA functions only with its host enclosure and EMU. There is no master PVA in the UltraSCSI RAID subsystem. The PVA has the following primary functions: • Allows the user to select the enclosure UltraSCSI bus ID. • Enables the user to place the subsystem in a standby power mode condition or return it to an operational status.
Introducing the UltraSCSI RAID Enclosure 2 — Establishing SCSI bus device addresses 8, 9, 10, and 11 3 — Establishing SCSI bus device addresses 12, 13, 14, and 15 Note Not all array controllers support an UltraSCSI RAID subsystem with more than one enclosure. Refer to the array controller documentation to ensure that the controller supports expanded configurations. Expansion EMU An EMU installed in an expansion enclosure is an expansion EMU.
Introducing the UltraSCSI RAID Enclosure Note DS–HSx70 series array controllers require DS–HSx70 series cache modules to operate properly; likewise, DS–HSx80 series array controllers require DS–HSx80 series cache modules. Cache Module A storage buffer that is required to support bus controller1 operations. ECB The ECB provides backup power to the cache module to protect data integrity if there is a power failure.
Introducing the UltraSCSI RAID Enclosure Figure 1–4 DS–BA370 Status LEDs Locations Figure 1–5 RA7000 Status LEDs Locations System OK (green) Fault (amber) System OK (Green) Fault (Amber) 1 0 1 0 CXO5451B CXO5751A CALLOUTS For Both Figures 1. System OK (green) 2. Fault (amber) Options The following sections describe the UltraSCSI RAID subsystem user selectable options. Power The standard UltraSCSI enclosure power configuration consists of one ac input box and five shelf power supplies.
Introducing the UltraSCSI RAID Enclosure Redundant Power Supply Configuration Adding three power supplies and a second ac input box provides significantly more power redundancy than the standard configuration. The redundant power supply configuration uses a single ac power source.
Introducing the UltraSCSI RAID Enclosure Compaq recommends using this configuration to eliminate all single points of power failure. Dual Controllers Establishing a subsystem with a dual redundant configuration (two UltraSCSI controllers, two cache modules, and ECBs) is the most effective and efficient method of ensuring continuous subsystem operation in the event of a component failure.
2 Operating the UltraSCSI Enclosure Setting up an UltraSCSI RAID subsystem for operation involves implementing the procedures described in the system-specific “Getting Started” manual provided with each system. This chapter supplements and expands on this information. Other chapters in this manual contain detailed information about individual component functions, operations, error conditions, and so forth.
Operating the UltraSCSI Enclosure • The following devices use a SCSI bus address (ID) and are SCSI bus nodes: — Adapters — Controllers — Storage devices • Every node on a bus must have a unique SCSI bus ID. • The SCSI bus ID for controller A is always 7. • The SCSI bus ID for controller B is always 6. • There are slots for six 3.5-inch disk drive SBB nodes in a shelf. The address switch on the PVA module determines node SCSI bus IDs.
Operating the UltraSCSI Enclosure • Compaq UltraSCSI array controllers support FAST 10 (20 MB/s) 16-bit (wide) disk drives. • Compaq UltraSCSI array controllers support FAST 20 (40 MB/s) 16-bit (wide) disk drives. Caution If a conflict in controller configuration information exists between this document and the controller-specific documentation, use information contained in the controller-specific documentation. Note Disk drive support is controller-specific.
Operating the UltraSCSI Enclosure UltraSCSI Enclosures The following configuration rules apply to UltraSCSI RAID subsystem enclosures: • The only compatible ac input box is model DS–BA35X–HE. • The only compatible power supply is model DS–BA35X–HH (180 W). The bezel label shown in Figure 2–1 identifies these power supplies.
Operating the UltraSCSI Enclosure See Table 2–1 for the Compaq-supported PVA SCSI ID switch settings. Table 2–1 Compaq-Supported PVA SCSI ID Switch Settings Total Number of Enclosures Master Enclosure First Expansion Second Expansion 1 0 None None 2 0 2 None 3 0 2 3 Starting the Subsystem After assembling an enclosure and connecting enclosure cabling, power is applied to start the subsystem.
Operating the UltraSCSI Enclosure Applying Power Initial power application is a matter of turning on the ac input boxes located in the lower left and right corners of the enclosure (see Figure 2–2, labels A and B). Pressing the I on the ac power switch applies ac power only to the shelf power supplies on the associated power bus (bus A or B). Note Apply power in the following sequence: 1. All expansion enclosures 2.
Operating the UltraSCSI Enclosure Turning On the Subsystem After completing subsystem assembly, expansion, or movement of the subsystem, complete the procedure in Table 2–2 to turn it back O N. Table 2–2 1. Turning On the Subsystem Power If there are no expansion enclosures, go to step 2. On the master enclosure, turn O N all the ac input boxes by pressing I on each ac power switch (CALLOUT 1). 0 2.
Operating the UltraSCSI Enclosure Shutting Down the Subsystem Shutting down the subsystem involves: • Clearing the cache module • Shutting down the controller • Either turning OFF the dc power for the subsystem (entering the standby power mode) or going one step further and turning OFF the ac input boxes (full power shutdown) Caution Failure to clear the cache module and shut down the array controller before removing power will disrupt data transfers.
Operating the UltraSCSI Enclosure Using Standby Power Mode Complete the procedure in Table 2–3 to turn OFF the dc power distribution, placing the subsystem in standby power mode. Complete the procedure in Table 2–4 to restore dc power within the enclosures. Table 2–3 Turning Off the DC Power 1. Clear the cache module and shut down the array controller per the array controller documentation. 2. If there are no expansion enclosures, go to step 3.
Operating the UltraSCSI Enclosure Table 2–4 Restoring the DC Power 1. If there are no expansion enclosures, go to step 3. 2. If there are expansion enclosures, momentarily press the EMU alarm control switch (CALLOUT 1) on each expansion enclosure. 1 2 3 4 CXO6302A 3. Momentarily press the EMU alarm control switch (CALLOUT 1) on the master enclosure. 4. Verify that the array controller restores the subsystem to an operational state.
Operating the UltraSCSI Enclosure Table 2–5 Turning Off the Subsystem Power 1. Clear the cache module and shut down the array controller per the array controller documentation. 2. If there are no expansion enclosures, go to step 3. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down of all enclosures. 1 CXO6303A 3.
Operating the UltraSCSI Enclosure Fault Detection Fault detection involves identifying errors and providing an indication to the user for analysis. The following sections address how faults are identified, descriptions of status LED indications, and in some cases, possible corrective actions. Error Detection, Reporting, and Analysis The EMU and PVA constantly monitor the operational status of the enclosure and its components. In some instances, automatic corrective action implementation occurs.
Operating the UltraSCSI Enclosure Table 2–6 Blowers Enclosure Status Monitoring (Continued) • Operation • Operating speed • Installation For a detailed description of status LEDs, and specific error conditions, see the applicable chapter for each component. Enclosure Status Indicators The primary elements of the enclosure status indicators are the enclosure power supplies and blowers. Loss of either a dc voltage or a blower creates an error condition.
Operating the UltraSCSI Enclosure Figure 2–3 DS–BA370 Status LEDs Locations Figure 2–4 RA7000 Status LEDs Locations 1 2 1 2 1 0 1 0 CXO5451C CXO5751B C ALLOUTS For Figures 1. System OK LED 2. System fault LED CALLOUT 1 is the system OK LED and is green. Callout 2 is the system fault LED and is amber. One or both of these two LEDs can be ON at any time. When the green system OK LED is ON, it indicates that the enclosure is operational.
Operating the UltraSCSI Enclosure Table 2–7 Enclosure Status LED Displays Enclosure Type Data Center Cabinet LED is ON Description and Possible Corrective Actions Dept. Server Cabinet The enclosure is operating normally. There are no detected errors. There are one or more failed components: LED is OFF 1. Observe the EMU front panel to see if there is an overtemperature condition, a blower problem, or a power problem. Replace the defective blower or power components. 2.
Operating the UltraSCSI Enclosure SBB Shelf Status Indicators SBB shelf status indicators are provided by shelf power supplies and disk drive SBBs. Power Supply Status LEDs The two green LEDs on each power supply (see Figure 2–5) display the blower, the power bus, and the individual power supply status. Normally, both these LEDs are ON. Figure 2–5 Power Supply Status LEDs Figure CALLOUTS 1. Shelf status LED 2.
Operating the UltraSCSI Enclosure Removal of a disk drive SBB device is automatically sensed by the array controller. When installing a replacement device in a configured subsystem, the array controller ensures that the replacement device type is identical to the one removed. Only after establishing complete compatibility can the array controller start configuring the disk drive SBB. As part of the configuration process, the array controller will restore all data that was on the original disk.
Operating the UltraSCSI Enclosure Controller Shelf Status Indicators Controller shelf status indicators are provided by the array controllers, EMU, PVA, and I/O modules. Typical Controller Status LEDs The operator control panel (OCP) status LEDs (see Figure 2–7) display the controller status. For a detailed explanation of each status code, refer to the controller documentation. Figure 2–7 Typical Array Controller OCP LEDs 1 Figure CALLOUTS 2 1 2 3 4 5 6 3 1.
Operating the UltraSCSI Enclosure EMU Status LEDs The EMU status LEDs (see Figure 2–8) have multiple functions (see Chapter 3). Figure 2–8 EMU Status LED Locations Figure CALLOUTS 1 2 3 1. System fault LED (amber) 2. Temperature fault LED (amber) 3. Power status LED (green) 4. Blower fault, error condition, and fault code LEDs (amber) 4 CXO6302A PVA Status LED The PVA (see Figure 2–9) has only one status LED, the power status LED.
Operating the UltraSCSI Enclosure I/O Module LEDs Each I/O module (see Figure 2–10) has two green status LEDs that display the status of both the internal (CALLOUT 2) and external (CALLOUT 1) SCSI bus terminator power (TERMPOWER). Whenever TERMPOWER is present, the applicable LED (internal or external) is ON. During normal operation, both LEDs are ON. See Chapter 5 for detailed information about these LEDs.
3 Environmental Monitoring Unit The primary function of the EMU (Figure 3–1) is to monitor, process, report, and display power distribution, temperature, blower, configuration, SCSI addressing, I/O module, communications, and microcode status information. The EMU and the array controller exchange and process some of this information. Figure 3–1 EMU CXO-5497A-MC Caution Proper operation of an UltraSCSI subsystem requires an operational EMU and PVA in each enclosure.
Environmental Monitoring Unit Product Description The EMU detects enclosure error conditions and configuration faults, and then notifies the user of existing or impending failures, using one or more of the following error reporting systems: • EMU LEDs • EMU audible alarm • Error messages on the host interface • Enclosure LEDs The EMU (CALLOUT 1) mounts directly above array controller “A” (upper bus controller) as shown in Figure 3–2. Figure 3–2 EMU Location Figure CALLOUTS 1. EMU 2.
Environmental Monitoring Unit Caution Some array controllers bypass the standby power mode functionality from the PVA standby power switch. Refer to the array controller documentation for availability of this feature. Note An overtemperature condition (greater than 50°C) causes the EMU to turn the enclosure dc power OFF. When any enclosure has an overtemperature condition, the cache module data is preserved prior to turning OFF the enclosure dc power.
Environmental Monitoring Unit I/O Module Status The EMU verifies that the six I/O modules are present, properly installed, and communicating with the backplane, and that TERMPOWER is at the correct level. The EMU reports an error condition whenever any one of these conditions are not met. The EMU also reports the I/O module type to the array controller. If the controller determines that all modules are not the same type, it displays this information on the optional maintenance terminal, if connected.
Environmental Monitoring Unit EMU Front Panel The EMU user interface controls, connectors, and LED displays are on the front panel (see Figure 3–3). The following sections describe the function of each component. Figure 3–3 EMU Major Component Locations 1 Figure CALLOUTS 2 3 4 5 6 7 CXO5774A 1. EMU communications connector (labeled IIC) 2. System fault LED (amber) and alarm control switch 3. Temperature fault LED (amber) 4. Power status LED (green) 5. Maintenance terminal connector 6.
Environmental Monitoring Unit Temperature Fault LED If either the intake or exhaust air temperature exceeds user-defined temperature setpoints, this amber LED (CALLOUT 3) turns ON. The LED remains ON until the overtemperature condition is corrected. Power Status LED This green power status LED (CALLOUT 4) turns ON if all the following normal operating conditions exist: • +5 V dc is greater than +4.7 V dc. • +12 V dc is greater than +11.4 V dc. • At least four power supplies are operational.
Environmental Monitoring Unit Configuring the EMU Configuring the EMU requires connecting the EMU-EMU communications bus and using the command line interpreter (CLI) set emu command. This command establishes operating temperature set points and desired blower speed operating mode (high-speed or automatic). Connecting the EMU Communication Bus In an expansion configuration, an EMU-EMU communications bus between the master EMU and each expansion EMU must be established.
Environmental Monitoring Unit Table 3–1 EMU Communication Cables Length Description 8-conductor 24 AWG, PVC, round cable assembly with: 2 – 8 position (8MP) locking, plug connectors Meters Feet 0.5 1.0 3.0 4.0 1.6 3.3 9.8 13.1 Part Number BN26M–0E BN26M–01 BN26M–03 BN26M–04 CXO5747A EMU Firmware EMU firmware allows the user to use CLI commands to establish limits for EMU functions such as temperature and blower speed control.
Environmental Monitoring Unit Caution For EMU firmware versions 1.0 and 1.1, the command set emu sensor_n_setpoint=default cannot be used. This command establishes a temperature set point that is too low for proper operation and might result in an erroneous subsystem alarm. Removing and replacing the master EMU automatically changes the temperature set points. This situation requires the user to reenter all the temperature set points using CLI commands. EMU Firmware Versions 1.0 and 1.
Environmental Monitoring Unit Note Default temperature settings for EMU firmware version 1.2 are: • Sensors 1 and 2 — 47 • Sensor 3 — 37 Installing EMU Firmware Updates EMU firmware updates are installed by Compaq field service personnel. Appendix C provides general microcode installation procedures. Setting the Temperature Sensors Three temperature sensors are found in each UltraSCSI RAID enclosure: • One mounted on the EMU module. • Two on the rear of the backplane, placed at the top middle.
Environmental Monitoring Unit Note For detailed instructions about using the set emu commands, refer to the array controller CLI documentation.
Environmental Monitoring Unit Table 3–3 4. Temperature Set Point Rules—EMU Firmware Versions 1.0 and 1.1 (Continued) EMU firmware versions 1.0 or 1.1 cannot use the set emu sensor_n_setpoint=default command. Instead, the following command is required: set emu sensor_n_setpoint=nn (where nn is the desired temperature in °C). Table 3–4 Temperature Set Point Rules—EMU Firmware Versions 1.2 1. Enter all temperatures in degrees Celsius (°C). Do not use fractions, decimals, or degrees Fahrenheit (°F). 2.
Environmental Monitoring Unit Note For detailed instructions about using the set emu commands, refer to the array controller documentation. Compaq recommends using the set emu fanspeed=automatic command, allowing individual EMUs to implement corrective action if one of the following error conditions occur: • A blower fails. • A blower is removed. • A blower is rotating too slowly to provide sufficient air flow in the shelf.
Environmental Monitoring Unit • Starts the EMU timer if: (1) all blowers in a shelf bank are defective, or (2) a blower is removed. • Approximately eight minutes after the EMU timer begins operating, the array controllers will shut down and then the EMU turns OFF the dc power in the enclosure to prevent continued overheating and potential equipment damage. Momentarily depressing the alarm control switch causes the EMU audible alarm to turn OFF, but the fault status LEDs remains ON.
Environmental Monitoring Unit • Fault conditions—involves a subsystem configuration problem, such as a Boot ROM checksum failure. If a fault condition is detected, the system fault LED (CALLOUT 1) starts FLASHING. For detailed information about other system fault LED indications, see the Configuration Fault Code Reporting section within this chapter. Whenever the audible alarm sounds, check the EMU status LEDs to determine the problem.
Environmental Monitoring Unit • The error condition still exists after 1 hour has passed. This situation causes the audible alarm to continue sounding once every hour for approximately 5 seconds. To clear all the fault code displays, press and hold the alarm control switch for at least 5 seconds. Note The alarm control switch does not affect either the error condition or the error condition code stored by the EMU. The only way to clear a stored error condition code is to correct the problem.
Environmental Monitoring Unit Monitoring Power Supply Operations Even with four operational power supplies, it is possible that a power supply problem might cause one or both of the dc voltages to be too low. Both the PVA and EMU monitor power supply operations to ensure that dc voltages are within a specified range (see Table 3–6). Table 3–6 DC Voltage Ranges Nominal Voltage +5 V dc +12 V dc Minimum Voltage +4.7 V dc +11.
Environmental Monitoring Unit Error Condition Reporting EMU status LEDs identify system (enclosure) status, power status, temperature status, blowers status, and error conditions. During normal operations, only the power LED is ON. Refer to Figure 3–5 as necessary to recall EMU status LED names and locations.
Environmental Monitoring Unit Table 3–7 EMU Status Displays (Continued) Nonoperational Enclosure 8 7 6 5 4 3 2 1 CXO5780A Probable Cause 1—Either +5 V dc or 12 V dc out of range. Observe the individual power supply status LEDs to determine the defective power supply and replace it. Probable Cause 2—TERMPOWER less than +4.5 V dc on one or more I/O modules. Replace the I/O modules displaying a TERMPOWER LED OFF indication. Single Blower Fault Operational blowers are running at high-speed.
Environmental Monitoring Unit Table 3–7 EMU Status Displays (Continued) Configuration Error (Example 1) 8 7 6 5 4 3 2 1 CXO5783A Probable Cause 1—Configuration error. See the Configuration Fault Code Reporting section for the specific error condition. Probable Cause 2—Slave EMU cannot communicate with the master EMU. See the Configuration Fault Code Reporting section for the specific error condition. Probable Cause 3—External SHELF_OK signal indicates error.
Environmental Monitoring Unit Table 3–7 EMU Status Displays (Continued) Overtemperature Condition 8 7 6 5 4 3 2 1 CXO5779A Probable Cause 1—A temperature in one or more enclosures is above the user specified limit. Determine and correct the cause of this condition quickly to prevent an overtemperature condition from inducing a subsystem RESET or failure. Probable Cause 2—A temperature set point is too low for this environment. Change the temperature set point.
Environmental Monitoring Unit Each time the alarm control switch is momentarily pressed, the EMU initiates the following sequence of actions: 1. The blower LEDs display the first reported hexadecimal fault code three times in succession. — The LEDs display the first reported fault code (for the first time) for 1 second and then turn OFF. — The LEDs display the first reported fault code (for the second time) for 1 second and then turn OFF.
Environmental Monitoring Unit Table 3–8 EMU Fault Code Displays (Continued) Fault Code, Cause, Corrective Action EMU LED Display Fault Code 02 Both microcode images are bad. 1. Load microcode image into the EMU from a PC. 2. Replace the EMU. 8 7 6 5 4 3 2 1 CXO5761A Fault Code 03 Either a PVA SCSI ID switch setting is invalid (set to 1, 4, 5, 6, or 7) or there is no master enclosure identified (SCSI bus ID = 0). 8 7 6 5 4 3 2 1 CXO5762A 1.
Environmental Monitoring Unit Table 3–8 EMU Fault Code Displays (Continued) Fault Code, Cause, Corrective Action EMU LED Display Fault Code 04 Master EMU cannot communicate with expansion EMU. 8 7 6 5 4 3 2 1 CXO5763A 1. Ensure PVA SCSI ID switches settings are as follows: • Master enclosure — 0 • First expansion enclosure — 2 • Second expansion enclosure — 3 2. If any PVA SCSI ID switch setting is changed, the controllers must be RESET to recognize the new setting. 3.
Environmental Monitoring Unit Table 3–8 EMU Fault Code Displays (Continued) Fault Code, Cause, Corrective Action EMU LED Display Fault Code 07 Invalid configuration. 8 7 6 5 4 3 2 1 Requires an array controller-specific action (see the array controller documentation). CXO5766A Fault Code 08 Two PVA SCSI ID switch settings are the same. 8 7 6 5 4 3 2 1 CXO5767A 1.
Environmental Monitoring Unit Table 3–8 EMU Fault Code Displays (Continued) Fault Code, Cause, Corrective Action EMU LED Display Fault Code 0A No PVA is installed. Install a PVA. 8 7 6 5 4 3 2 1 CXO5769A Fault Code 0B Controller fault. 8 7 6 5 4 3 2 1 Requires an array controller-specific action (see the array controller documentation). CXO5770A Fault Code 0C One or more defective power supplies. 8 7 6 5 4 3 2 1 Observe all power supply status LEDs.
Environmental Monitoring Unit Table 3–8 EMU Fault Code Displays (Continued) Fault Code, Cause, Corrective Action EMU LED Display Fault Code 0E EMU memory test failed. 8 7 6 5 4 3 2 1 Replace the EMU. CXO5773A Fault Code 0F Less than four operational power supplies remain. Replace the defective power supplies. Comment—The EMU places the system in the standby power mode for this fault indication.
Environmental Monitoring Unit Replacing an EMU Complete the procedure in Table 3–9 to remove an EMU and complete the procedure in Table 3–10 to install an EMU. Table 3–9 Removing an EMU 1. Clear the cache module and shut down the array controller per the array controller documentation. 2. If there are no expansion enclosures, go to step 3.
Environmental Monitoring Unit Table 3–9 6. Removing an EMU (Continued) Pull the EMU extractor latches outward and remove the EMU. CXO-5497A-MC Table 3–10 Installing an EMU 1. Verify that the EMU is a model DS–BA35X–EB. CXO-5497A-MC 2. Align the EMU in the top, left-hand slot (CALLOUT 1) and insert it.
Environmental Monitoring Unit Table 3–10 Installing an EMU (Continued) 3. Pull the EMU extractor latches outward. Push the EMU into the slot until the extractor latches engage the enclosure, then push the extractor latches inward to seat and secure the EMU. 4. If there are no expansion enclosures, go to step 6. For an expansion configuration, use a BN26M series cable (see Table 3–1) to create the EMU-EMU communications bus connections as illustrated below. CXO5820A 5.
4 Power Verification and Addressing An enclosure’s PVA assembly (see Figure 4–1) and associated EMU monitors the status of major UltraSCSI enclosure components to verify their proper operation. If an error or fault condition occurs, these modules notify the user, and in some instances, the array controller, that a problem exists. The array controller can identify and display information about some problems. The PVA and EMU status LEDs indicate possible root causes of problems.
Power Verification and Addressing The PVA and EMU mount next to each other in the enclosure—the EMU (CALLOUT 1) is on the left and the PVA is on the right (CALLOUT 2) as shown in Figure 4–2. Figure 4–2 PVA Location Figure CALLOUTS 1. EMU 2. PVA 1 2 CXO5754B Product Description Figure 4–3 identifies the major PVA components. Figure 4–3 PVA Major Component 1 Figure CALLOUTS 2 3 CXO5821A 4–2 UltraSCSI RAID Enclosure 1. Standby power switch 2. Communications port 3.
Power Verification and Addressing The PVA has two status indicators: • A green power status LED that is part of the standby power switch (CALLOUT 1). This LED is ON if there are at least four operational power supplies. If an error condition occurs, the LED turns OFF. Caution Some array controllers bypass the standby power mode functionality from the PVA standby power switch. Refer to the array controller documentation for availability of this feature.
Power Verification and Addressing This action—removing power from the enclosure—duplicates an EMU function and ensures optimum subsystem performance and integrity. PVA Operation Most PVA operations occur automatically and do not require user intervention. The following sections define major PVA operations. EMU Installation Monitoring If the EMU is removed or installed incorrectly (for example, not fully seated), the PVA detects this condition and sounds the PVA audible alarm.
Power Verification and Addressing Figure 4–4 Master Enclosure Device IDs Figure CALLOUT 1 1 2 3 4 5 6 1. SCSI bus 3 2 1 0 CXO5755B Use the PVA SCSI ID switch to establish SCSI bus IDs for all devices in the enclosure. This switch has eight (0 through 7) positions. Caution To preclude SCSI bus addressing conflicts, Compaq only supports PVA SCSI ID switch settings of 0, 2, and 3. Always set the master enclosure PVA SCSI ID switch setting to 0.
Power Verification and Addressing Monitoring Power Supply Operations Even with four operational power supplies, it is possible that a power supply problem might cause one or both of the dc voltages to be too low. Both the PVA and the EMU monitor power supply operations to ensure that the dc voltages are within the ranges specified in Table 4–1. Table 4–1 DC Voltage Ranges Nominal Voltage +5 V dc +12 V dc Minimum Voltage +4.7 V dc +11.
Power Verification and Addressing Setting the Enclosure Address The PVA SCSI ID switch establishes the SCSI bus address (device ID) for all disk drive SBBs in the enclosure. Table 4–2 identifies how to set the PVA SCSI ID switch setting for each enclosure. Table 4–2 Setting the Enclosure Configuration 1 To decrease the configuration number: Press the upper switch (CALLOUT 1) to step the address down one address at a time (decrement).
Power Verification and Addressing Table 4–3 Compaq-Supported PVA SCSI ID Switch Settings Total Number of Enclosures Master Enclosure First Expansion Second Expansion 1 0 None None 2 0 2 None 3 0 2 3 Master Enclosure Address The master enclosure PVA SCSI ID switch setting is always 0. This setting establishes the disk drive SBB SCSI bus IDs shown in Figure 4–5.
Power Verification and Addressing Expansion Enclosure Addresses Compaq supports only PVA SCSI ID switch settings of 2 (see Figure 4–6) and 3 (see Figure 4–7) for expansion enclosures: • 2 — Used for the first expansion enclosure. • 3 — Used for a second expansion enclosure. Caution To preclude SCSI bus addressing conflicts, Compaq array controllers do not support enclosure address settings of 1, 4, 5, 6, or 7.
Power Verification and Addressing Figure 4–7 Expansion Enclosure Address 3: Shelf and SCSI Bus IDs Figure CALLOUT 1 1 2 3 4 5 6 1. SCSI bus 15 14 3 CXO-4843A-MC 13 12 CXO5777B Implementing the Standby Power Mode A major function of the PVA is implementing the standby power mode. This mode removes dc power from all enclosure components, except for the EMU alarm control switch. In standby power mode, the EMU alarm control switch now functions as a dc power switch when pressed.
Power Verification and Addressing Table 4–4 Turning Off the DC Power Distribution 1. Clear the cache module and shut down the array controller per the array controller documentation. 2. If there are no expansion enclosures, go to step 3. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 3.
Power Verification and Addressing Table 4–5 Turning On the DC Power Distribution 1. If there are no expansion enclosures, go to step 3. 2. If there are expansion enclosures, momentarily press the EMU alarm control switch (CALLOUT 1) on each expansion enclosure. 1 2 3 4 CXO6302A 3. Momentarily press the EMU alarm control switch (CALLOUT 1) on the master enclosure. 4. Verify that the array controller restores the subsystem to an operational state.
Power Verification and Addressing Table 4–6 2. Removing a PVA (Continued) If there are no expansion enclosures, go to step 3. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 3. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 4.
Power Verification and Addressing Table 4–6 5. Removing a PVA (Continued) Note the enclosure address setting (0, 2, or 3) on the PVA SCSI ID switch (CALLOUT 3). 1 2 3 CXO5821A 6. Pull both extractor latches outward and remove the PVA. Table 4–7 1. Installing a PVA Verify that the PVA being installed is a model DS–BA35X–EC. CXO-5737A 2. Align the PVA (CALLOUT 2) with the top, right-hand slot and insert it.
Power Verification and Addressing Table 4–7 Installing a PVA (Continued) 3. Pull the PVA extractor latches outward. Push the PVA into the slot until the extractor latches engage the enclosure, then push the extractor latches inward to seat and secure the PVA. 4. Ensure that the PVA SCSI ID switch is set to the valid number for the enclosure: 5. • Master enclosure — 0 • First expansion enclosure — 2 • Second expansion enclosure — 3 If there are no expansion enclosures, go to step 6.
5 Single-Ended I/O Module The single-ended I/O module (see Figure 5–1) performs two functions: • Provides termination for both the internal and external SCSI buses • Establishes SCSI bus communications between enclosures Figure 5–1 Single-Ended I/O Module CXO5816A Caution I/O modules provide termination for both the internal and external SCSI buses. Therefore, install the same type of operational I/O modules on each of the six enclosure connectors.
Single-Ended I/O Module Note Not all array controller firmware supports an UltraSCSI RAID subsystem with more than one enclosure. Refer to the array controller documentation to ensure that the controller supports expanded configurations. Six I/O modules mount on the bottom rear (see Figure 5–2, CALLOUT 1) of each enclosure. These modules connect the array controller to the devices in the expansion enclosures. In an UltraSCSI RAID subsystem, the I/O module number corresponds to the SCSI bus number.
Single-Ended I/O Module I/O Module and Expansion Cable Error Conditions Removal of an I/O module causes the EMU to report the following error conditions to the controller: • Installation of different I/O modules • Loss of TERMPOWER Either of these error conditions might cause the controller to cease operation without implementing procedures to protect the data.
Single-Ended I/O Module Controlling the Internal SCSI Bus The I/O module controls the internal SCSI bus in the following manner: • Isolates the internal SCSI bus from the external SCSI bus • Provides single-ended SCSI bus termination for each internal bus • Disconnects the internal SCSI bus from the external SCSI bus when directed by the EMU • Distributes TERMPOWER (+5 V dc) to the internal SCSI bus • Turns ON the green internal TERMPOWER LED when internal TERMPOWER is present • Turns OFF the gr
Single-Ended I/O Module Controlling the Fault Bus The I/O module controls fault bus operation in the following manner: • Provides a fault bus driver for improved signal transmission • Distributes the FAULT_CLK and FAULT_DATA signals from the master enclosure to the expansion enclosures • Distributes the SHELF_OK and SWAP_L signals from the expansion enclosures to the master enclosure Error Reporting The EMU monitors the status of the I/O modules for the following error conditions: • Installation of
Single-Ended I/O Module Only when all I/O modules are the same type can an UltraSCSI RAID subsystem function properly. The Compaq UltraSCSI controller only supports single-ended buses. Therefore, use only single-ended I/O modules (DS–BA35X–MN).
Single-Ended I/O Module See Table 5–1 for possible causes of TERMPOWER problems. Table 5–1 TERMPOWER Problems TERMPOWER Error Possible Causes Internal I/O module Power supply External I/O module Power supply External SCSI bus cable Removing an I/O module disconnects the SCSI bus termination, resulting in a loss of TERMPOWER available to the internal SCSI bus. Without TERMPOWER, the bus cannot function correctly.
Single-Ended I/O Module Caution The Compaq UltraSCSI controller does not support connecting or disconnecting a SCSI bus cable when both data and power are present on the connector—a “hot swap.” Only connect or disconnect SCSI bus cables using the “cold swap” method. Table 5–2 1. UltraSCSI Bus Expansion Rules The I/O module numbers (1 through 6) correspond to the enclosure SCSI bus numbers. 6 4 2 5 3 1 CXO5819A 2. Always connect cables between enclosures to the same I/O module number.
Single-Ended I/O Module Cabling an UltraSCSI Subsystem This section provides procedures for adding a second and third enclosure (expansions) to a subsystem. The first expansion enclosure connects to the master enclosure. A second expansion enclosure connects to either the master enclosure or the first expansion enclosure. Before beginning any cabling installation, complete the preliminary procedures in Table 5–3.
Single-Ended I/O Module Table 5–4 UltraSCSI Bus Cables Length Description 68-conductor SCSI cable with: 2 — VHDCI straight plug connectors with jack screws Meters Feet 0.3 0.5 1.0 1.5 2.0 1.0 1.6 3.3 4.9 6.6 Order Number BN37A–0C BN37A–0E BN37A–01 BN37A–1E BN37A–02 CXO5702A Shutting Down the Subsystem To protect the data and devices, complete the procedures in Table 5–3 and Table 5–5 before beginning cable installation procedures for a two- or three-enclosure subsystem.
Single-Ended I/O Module Table 5–5 Shutting Down the UltraSCSI Subsystem 1. Clear the cache module and shut down the array controller per the array controller documentation. 2. If there are no expansion enclosures, go to step 3. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 3.
Single-Ended I/O Module Cabling a Two-Enclosure Subsystem Complete the procedures in Table 5–6 to connect the master enclosure to one expansion enclosure. Perform this procedure for the I/O modules on each SCSI bus, starting with SCSI bus 1 in Figure 5–3. Each SCSI bus requires one BN37A cable for a total of six cables. Caution Not all array controllers support an UltraSCSI RAID subsystem with more than one enclosure.
Single-Ended I/O Module Table 5–6 5. Installing Two-Enclosure Subsystem Cables (Continued) On the master enclosure I/O module, align the Cable A (CALLOUT A) connector with the left connector. Gently insert the cable connector into the module connector. Tighten both cable connector thumb screws to fully seat the connector. A CXO5854B 6. Install a wire tie through the holes on the cable support bracket and around the cable. Tighten the wire tie. 7.
Single-Ended I/O Module Table 5–6 Installing Two-Enclosure Subsystem Cables (Continued) 10. On the expansion enclosure shroud, align the module that has Cable A (CALLOUT A) attached with the Port 1 backplane connector. Gently insert the module and fully seat it. Use a screwdriver to tighten the spring-loaded mounting screws. 6 4 5 3 2 1 A 6 4 2 5 3 1 CXO5840B 11. Repeat steps 5 through 10 for the remaining SCSI buses (ports 2 through 6). 12.
Single-Ended I/O Module Turning On the Subsystem Complete the procedures in Table 5–7 to turn ON the subsystem. Table 5–7 Turning On the UltraSCSI Subsystem 1. If there are no expansion enclosures, go to step 3. 2. Turn O N all the ac input boxes for each expansion enclosure by pressing I on each ac power switch (CALLOUT 1). 1 1 0 3. On the master enclosure, turn O N all the ac input boxes by pressing I on each ac power switch (CALLOUT 1). 2 CXO5488B 4.
Single-Ended I/O Module Cabling a Three-Enclosure Subsystem Complete the procedures in Table 5–8 to connect the master enclosure to two expansion enclosures. The second expansion enclosure connects to either the master enclosure or the first expansion enclosure. Table 5–8 connects the second expansion enclosure to the first expansion enclosure. Perform this procedure for the I/O modules on each SCSI bus, starting with SCSI bus 1 (identified in Figure 5–3).
Single-Ended I/O Module Table 5–8 Installing Three-Enclosure Subsystem Cables 1. Complete Table 5–5 to shut down the UltraSCSI subsystem. 2. Use a screwdriver to loosen the two spring-loaded mounting screws on the I/O module. 3. Grasp the I/O module by the cable support bracket and pull it straight outward until removed from the enclosure shroud. CXO5816A 4. Repeat steps 2 and 3 for all the I/O modules within the three enclosures. 5.
Single-Ended I/O Module Table 5–8 7. Installing Three-Enclosure Subsystem Cables (Continued) On the master enclosure shroud, align the module that has Cable A (CALLOUT A) attached with the Port 1 backplane connector. Gently insert the module and fully seat it. Use a screwdriver to tighten the spring-loaded mounting screws. 6 4 5 3 2 1 A 8. 9. On the first expansion I/O module, align the Cable A (CALLOUT A) connector with the left connector.
Single-Ended I/O Module Table 5–8 Installing Three-Enclosure Subsystem Cables (Continued) 11. Install a wire tie through the holes on the cable support bracket and around the cable. Tighten the wire tie. 12. On the first expansion enclosure shroud, align the module that has Cable B (CALLOUT B) attached with the Port 1 backplane connector. Gently insert the module and fully seat it. Use a screwdriver to tighten the spring-loaded mounting screws. 6 4 5 3 6 4 5 3 2 1 A 2 1 B 6 13.
Single-Ended I/O Module Table 5–8 Installing Three-Enclosure Subsystem Cables (Continued) 15. On the second expansion enclosure shroud, align the module that has Cable B (CALLOUT B) attached with the Port 1 backplane connector. Gently insert the module and fully seat it. Use a screwdriver to tighten the spring-loaded mounting screws. 6 4 5 3 6 4 5 3 2 1 A 2 1 B 6 4 2 5 3 1 CXO5841B 16. Repeat steps 5 through 15 for the remaining SCSI buses (ports 2 through 6). 17.
Single-Ended I/O Module Replacing an I/O Module Complete the procedure in Table 5–9 to remove an I/O module. Complete the procedure in Table 5–10 to install an I/O module. Caution To prevent interrupting a data transfer or losing data, shut down the subsystem before removing an I/O module. Overtightening the I/O module spring-loaded mounting screws can damage the threads. Table 5–9 Removing an I/O Module 1. Shut down the subsystem using Table 5–5. 2.
Single-Ended I/O Module Table 5–10 Installing an I/O Module 1. Verify that the I/O module being installing is a model DS–BA35X–MN. CXO5816A Note Jumpers are factory installed—do not modify jumper settings. 2. Align the cable with the left I/O module connector. Gently insert the cable connector into the module connector. Tighten both cable connector thumb screws to fully seat the connector. CXO5940A 3. Install a wire tie through the holes on the cable support bracket and around the cable.
Single-Ended I/O Module Replacing an Expansion Cable Complete the procedure in Table 5–11 to remove an expansion cable. Complete the procedure in Table 5–12 to install an expansion cable. Caution Not all array controllers support an UltraSCSI RAID subsystem with more than one enclosure. Refer to the array controller documentation to ensure that the controller supports expanded configurations. To prevent interrupting a data transfer or losing data, shut down the subsystem before removing an I/O module.
Single-Ended I/O Module Table 5–12 Installing an Expansion Cable 1. Verify that the expansion cable is the proper type and length per Table 5–4. CXO5702A 2. Align the cable with the left I/O module connector. Gently insert the cable connector into the module connector. Tighten both cable connector thumb screws to fully seat the connector. CXO5940A 3. Install a wire tie through the holes on the cable support bracket and around the cable. Tighten the wire tie. 4.
6 Power Distribution This chapter describes the UltraSCSI RAID enclosure power distribution to include the following: • Enclosure power system overview (see Figure 6–1) • Power distribution configurations (standard, redundant, and optimum) • Error condition reporting • Replacement procedures (power supply and ac input box) Figure 6–1 Enclosure Power System CXO5800A UltraSCSI RAID Enclosure 6–1
Power Distribution Note Proper operation of the controller cache modules requires ECBs. Refer to the array controller documentation for discussion on how to use the ECBs. Power System Overview In any RAID subsystem, the elimination of single points of failure is taken into consideration. Designing systems with redundant power capabilities is one way to eliminate single points of failure.
Power Distribution Three configurations exist: • Standard (n+1) • Redundant (n+4) • Optimum (n+4) Standard (n+1) This configuration has one redundant power supply for a total of five power supplies. A single ac input box distributes ac power to all five power supplies using power bus A. This configuration requires only one ac power source. Redundant (n+4) This configuration has four redundant power supplies for a total of eight power supplies.
Power Distribution AC Input Box The ac power distribution is provided through the ac input box (see Figure 6–2) to the shelf power supplies. The ac power switch on each ac input box controls the ac distribution to the associated power bus (A or B). These ac input boxes are completely interchangeable and have no physical or electrical differences between them. AC input boxes do not have error indicators on them, nor do they generate any error signals.
Power Distribution Shelf Power Supplies Each shelf power supply (see Figure 6–3) converts the incoming ac voltage into +5 V dc and +12 V dc and distributes these voltages throughout the RAID enclosure. The maximum capacity for the UltraSCSI RAID enclosure is eight power supplies, four of which provide power redundancy. The standard power configuration uses five power supplies, one of which provides power redundancy.
Power Distribution AC Power Buses AC power distribution to the UltraSCSI shelf power supplies is distributed over two power buses—bus A and bus B (see Figure 6–4). Each power bus has an ac power source, a separate ac input box, power supplies, and power cords.
Power Distribution Power Distribution Configurations This section describes the three power configurations for the UltraSCSI RAID enclosure. Standard (n+1) Power Configuration This power configuration provides minimum power supply redundancy. AC power distribution is provided over power bus A to five power supplies located in positions 1A through 5A (see Figure 6–5). Power bus A uses four black power cords on the left side of the enclosure and one black power cord on the upper right corner.
Power Distribution Any one of the following power related error conditions will cause this UltraSCSI RAID enclosure to cease operation: • Loss of the ac power source • Failure of two shelf power supplies • Failure of the ac input box Redundant (n+4) Power Supply Configurations This power configuration provides more power redundancy than the standard configuration. AC power distribution is provided over both power buses (A and B, CALLOUTS 1 and 2, respectively) as shown in Figure 6–6.
Power Distribution To implement this configuration from an n+1 configuration, order the following additional components: • 3 — power supplies (DS–BA35X–HH) • 1 — ac input box (DS–BA35X–HE) This power configuration provides data protection through maximum redundancy of all enclosure power system components.
Power Distribution • Failure of the ac power source for bus B and one power supply on bus A • Failure of the ac power source on bus A and one power supply on bus B • Failure of the ac input box on bus B and one power supply on bus A • Failure of the ac input box on bus A and one power supply on bus B Error Condition Reporting This section describes the power supply and ac input box error condition reporting.
Power Distribution The green power supply status LED (CALLOUT 2) is O N when the power supply is operating properly. If the power supply fails, both power supply LEDs (CALLOUTS 1 and 2) turn OFF. Table 6–1 identifies the possible fault displays and provides a description of each state. Table 6–1 Power Supply Status LED Displays LED Display Description and Possible Corrective Actions This power supply is functioning properly.
Power Distribution Replacing a Power Supply This section describes how to properly handle power supply SBBs and the procedures for replacing a power supply. Handling a Power Supply SBB Table 6–2 defines the proper methods for handling a power supply SBB to prevent damaging it. Table 6–2 SBB Handling Rules Do . . . Do NOT . . . Set an SBB on its side. Set an SBB on its edge. CXO6549A CXO6550A Set SBBs side by side. Stack SBBs. CXO6551A CXO6552A Set an SBB down gently. Drop an SBB.
Power Distribution Procedures for Replacing a Power Supply The basic procedure for removing and replacing shelf power supplies is the same as for replacing disk drives. There are two methods for replacing shelf power supplies—the hot swap method and the cold swap method. Use the power supply status LED indication, either operational or nonoperational, to determine which swap method to use. • The hot swap method is normally used to replace one shelf power supply without removing power from the enclosure.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
Power Distribution Table 6–3 4. Removing a Power Supply (Continued) If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all enclosures. 1 CXO6303A 5. Press and hold the PVA standby power switch (CALLOUT 1) on the master enclosure until the master EMU initiates a power shut down on the master enclosure. 6.
