Summary of the content on the page No. 1
Enclosure 4200 Family
LVD Disk Enclosures
User Guide
First Edition (July 1999)
Part Number: EK–SW2ZS–UG. A01 / 148451–001
Compaq Computer Corporation
Summary of the content on the page No. 2
Notice While Compaq Computer Corporation believes the information included in this manual is correct as of the date of publication, it is subject to change without notice. Compaq makes no representations that the interconnection of its products in the manner described in this document will not infringe existing or future patent rights, nor do the descriptions contained in this document imply the granting of licenses to make, use, or sell equipment or software in accordance with the descripti
Summary of the content on the page No. 3
Contents About This Guide Chapter 1 Introducing the Enclosure Disk Enclosure Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2 SCSI Buses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3 High Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3 Variable Speed Fans .
Summary of the content on the page No. 4
iv Enclosure 4200 Family LVD Disk Enclosures Users Guide Single-Bus Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2 SCSI Bus Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3 SCSI Bus Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3 Status Displays. . . . . . .
Summary of the content on the page No. 5
Contents v Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–4 Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–5 Glossary Index
Summary of the content on the page No. 6
List of Figures Figure 1–1. Disk Enclosure (Front View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1 Figure 1–2. Disk Enclosure (Rear View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2 Figure 1–3. Front Mounted Elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5 Figure 1–4. Rear Mounted Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Summary of the content on the page No. 7
List of Tables Table 1 Documentation Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi ii Table 2 Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv Table 1–1 CRU Replacement Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6 Table 2–1 SCSI Bus Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Summary of the content on the page No. 8
About This Guide Intended Audience This publication is designed for use by Compaq StorageWorks users who are responsible for installing and maintaining the Model 4214R (rack) and 4214T (tower) Ultra2 SCSI low voltage differential (LVD) disk enclosures. How this Guide is Arranged This manual discusses the product features and operations from the general to the specific. The major sections of this publication include: Chapter 1, “Introducing the Enclosure” This chapter is a description of the
Summary of the content on the page No. 9
xii Enclosure 4200 Family LVD Disk Enclosures Users Guide Chapter 4, “Disk Drives” This chapter describes the disk drives, operation, and status reporting. Chapter 5, “Enclosure Power and Cooling” The chapter describes the power supply and fan operation and status reporting. Chapter 6, “Replacing CRUs” This chapter describes the procedures for replacing customer replaceable units (CRUs). Appendix A, “Regulatory Notices” This appendix defines the country-specific regulatory standards for th
Summary of the content on the page No. 10
xiii Documentation Conventions The documentation conventions used in this publication are shown in Table 1. Table 1 Documentation Conventions Symbol Description Boldface type Boldface type indicates the first instance of terms being defined in the text, the glossary, or both. italic type Italic type indicates one of the following: ■ Emphasis ■ A publication title ■ A glossary cross-reference to another glossary entry. Caution Text symbol for information essential to avoid damaging software, h
Summary of the content on the page No. 11
xiv Enclosure 4200 Family LVD Disk Enclosures Users Guide Table 1 Documentation Conventions (Continued) Symbol Description I/O module LED label Power Status (ON) or EMU Locate (FLASHING) LED (green) I/O module label Ultra2 SCSI, Single Bus, LVD input connector Light emitting diode (LED) is OFF. LED is FLASHING. LED is ON.
Summary of the content on the page No. 12
xv Related Documents Table 2 lists publications that contain additional information relevant to the LVD disk enclosure products. Table 2 Related Publications StorageWorks Publication Title Part Number Disk Enclosure RETMA Rack Mounting Kit Installation Card 127430-001 Disk Enclosure RETMA Rack Mounting Template 102943-001 Environmental Monitoring Unit for 122941-001 Enclosure Models 4214R and 4214T User Guide Hot-Pluggable Wide-Ultra2 SCSI Hard Drives Installation Card 386195-001 Replacing a D
Summary of the content on the page No. 13
Chapter 1 Introducing the Enclosure This chapter describes of the StorageWorks Enclosure 4200 family of low voltage differential (LVD) disk enclosures (see Figure 1–1 and Figure 1–2). These enclosures support Wide-Ultra and Wide-Ultra2 small computer system interface (SCSI) protocols. The internal bus supports only LVD drives. The external bus (the enclosure to the host controller bus) supports either Wide-Ultra2 (LVD) and or Wide-Ultra single-ended (SE) SCSI protocols. CXO6854A Figure 1–1.
Summary of the content on the page No. 14
1–2 Enclosure 4200 Family LVD Disk Enclosures User Guide CXO6912A Figure 1–2. Disk Enclosure (Rear View) Disk Enclosure Features The Model 4214 enclosure supports up to fourteen, 1-inch high, 3.5-inch form factor hard disk drives. This enclosure is available in either a rack mountable version (4214R) or in a tower (4214T). A rack (cabinet) mounted enclosure requires a RETMA 3U vertical opening (5.25-inches) where a “U” is 1.75-inches. The enclosure provides several features, including:
Summary of the content on the page No. 15
Introducing the Enclosure 1–3 SCSI Buses The enclosure supports only Wide-Ultra2 SCSI, wide (16-bit), internal LVD buses. Depending on the host interface, the external SCSI bus, the bus from the I/O module to the host can be either Wide-Ultra or Wide-Ultra2, LVD or SE. The SCSI bus type determines the length of this bus, and therefore, the maximum cable length. The standard Compaq cable length of 12 ft (3.7 m) ensures satisfactory operation. As for all SCSI buses, the shorter the cable, the
Summary of the content on the page No. 16
1–4 Enclosure 4200 Family LVD Disk Enclosures User Guide Status Monitoring and Display The major status monitoring capabilities of these enclosures include: ■ Displaying the enclosure status on the enclosure LEDs ■ Displaying the element status on the power supply, EMU, drive, and I/O module LEDs ■ Detecting the installation of a fan, power supply, drive, or I/O module ■ Detecting the removal of a fan, power supply, drive, or I/O module ■ Sensing enclosure temperatures ■ Sensing power supp
Summary of the content on the page No. 17
Introducing the Enclosure 1–5 1 3 5 7 2 9 4 6 11 13 8 10 12 15 14 CXO6728A Figure 1–3. Front Mounted Elements The I/O module, power supplies, fans, EMU, and cables mount in the rear of the enclosure (see Figure 1–4). 1 2 3 4 5 6 CXO6979A 1 EMU 4 Fan 2 2 Fan 1 5 Power Supply Bay 2 3 Power Supply Bay 1, or 6 I/O Module 1 Fan Mounting Assembly 1. In a single power supply configuration, the fan mounts on the fan mounting assembly. Figure 1–4. Rear Mounted Elements
Summary of the content on the page No. 18
1–6 Enclosure 4200 Family LVD Disk Enclosures User Guide Major Elements The elements each enclosure requires for proper operation include: ■ An EMU ■ Two power supplies, or 1 power supply and 1 fan mounting assembly ■ Two Fans ■ An I/O module ■ A disk drive or disk drive blank in each bay Element Functions A full description of the individual elements and their functions can be found in the individual chapters. Element Replacement The methods used to replace an element depend upon several
Summary of the content on the page No. 19
Introducing the Enclosure 1–7 Table 1–1 CRU Replacement Methods (Continued) Element Method Fan Hot-pluggable I/O Module Hot-pluggable Power Supply–Dual Hot-pluggable 1 Power Supply–Single No Power Applied SCSI Bus Cables Pluggable 1. In a single power supply configuration, the enclosure is disabled when the power supply fails.
Summary of the content on the page No. 20
Chapter 2 Starting the Enclosure With the enclosure installed in a rack or tower it is necessary to: 1. Connect the SCSI bus cables. 2. Apply power. 3. Verify proper operation. Connecting the SCSI Bus Cables Connecting the enclosure to a host adapter or SCSI bus controller is simply a matter of connecting cables to the I/O module. All I/O modules has 68-pin, very high density computer interface (VHDCI) connectors. Figure 2–1 shows the cable connectors for a single bus configuration. CAUTION:
