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- Page 1 DWZZH 16–Bit UltraSCSI Hub (Rack-Mountable) User’s Guide EK–SMDZS-UG. B01 Compaq Computer Corporation Houston, Texas...
- Page 2 Consult the dealer or an experienced radio/TV technician for help. Japanese VCCI Statement Compaq Computer Corporation makes no representations that the use of its products in the manner described in this publication will not infringe on existing or future patent rights, nor do the descriptions contained in this publication imply the granting of licenses to make, use, or sell equipment or software in accordance with the description.
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Page 3: Table Of Contents
Selecting the SCSI Cables... 3–8 Installing the DWZZH-09 Upgrade Kit Install Upgrade ... 4–2 4.1.1 Install 0.5m Cable... 4–2 SWCC and UltraSCSI Hubs Agents and Storage ... 5–1 Appendix A Removable Parts of the DWZZH–S5 and DWZZH–09...A–1 Glossary...G–1 EK-SMDZS-UG. B01 Contents... - Page 4 3–2 DWZZH-09 SCSI ID Assignments ... 3–4 3–3 DWZZH–S5 Front Panel... 3–5 3–4 DWZZH-09 Front Panel ... 3–6 3–5 DWZZH–S5 SCSI Narrow ID Assignments ... 3–7 3–6 DWZZH–S5 SCSI Narrow Addressing Jumper ... 3–8 4–1 DWZZH–09 Upgrade Kit Contents ... 4–1 4–2 Install DWZZH–A5 SBB in Shelf ...
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Page 5: Revision Record
The Revision Record provides a concise publication history of this guide. It lists the guide revision levels and release dates, and summarizes the changes. The following revision history lists all revisions of this publication and their effective dates. The publication part number is included in the Revision Level column, with the last entry denoting the latest revision. -
Page 7: About This Guide
Hub allows the connection of up to five ports on one logical SCSI bus on the DWZZH-S5 model and up to nine on the DWZZH-09 unit. Audience This guide is intended for end users and for COMPAQ employees responsible for configuring, installing, and maintaining the StorageWorks subsystem and its components. - Page 8 UltraSCSI Hub. While the information provided here is important, it is essential that you have read the SWCC manual and release notes. Appendix A. Removable Parts of the DWZZH-S5 and DWZZH-09 This Appendix identifies the parts that can be removed and replaced from the DWZZH-S5/-09 16-Bit UltraSCSI Rack-Mountable Hubs.
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Page 9: Getting Help
Compaq Web Site The Compaq Web Site has information on this product as well as the latest drivers and Flash ROM images. You can access the Compaq Web Site by logging on to the Internet at http://www.compaq.com. Telephone Numbers For the name of your nearest Compaq Authorized... -
Page 11: Introducing The 16-Bit Ultrascsi Hub (Rack-Mountable)
UltraSCSI protocol disables both buses when they are connected together. By using an UltraSCSI Hub you can accomplish the following: Provide radial disconnect where remaining connections can continue to operate. Provide fair SCSI arbitration for host nodes (DWZZH-05, -S5 and the -09 UltraSCSI Hubs only). EK-SMDZS-UG. B01 (Rack-Mountable) -
Page 12: Product Descriptions
Termination is provided by each of the host ports. A feature of the DWZZH-S5 Hub is that it is upgradeable from a five port Hub to a nine port Hub with the purchase of a DWZZH-09 Upgrade Kit. The kit contains another 5.25"... -
Page 13: Dwzzh-09
Chapter 1. Introducing the 16-Bit UltraSCSI Hub (Rack-Mountable) 1.2.2 DWZZH-09 The DWZZH-09 is made up of two large Hubs connected by a 0.5m VHDCI cable (BN 37A-0E). A tri-link attached to the DWZZH-A5 portion of the Hub allows the attachment of a storage device up to 25 meters away from the Hub. The Hub provides radial connectivity by allowing the user to connect up to eight host bus adapters from any number of distributed systems to the DWZZH-09. -
Page 14: Product Specifications
DWZZH 16-Bit UltraSCSI HUB (Rack-Mountable) Product Specifications Table 1-1 lists the functional specifications for the DWZZH Hub. Table 1–1 UltraSCSI Hub Functional Specifications Feature SCSI ID SCSI Addresses Overload Protection DTERMPOWER STERMPOWER Shielding, Enclosure & Connectors Power-Up Reset SCSI Bus Reset Differential SCSI Bus Length Ultra (20 megatransfers... - Page 15 Chapter 1. Introducing the 16-Bit UltraSCSI Hub (Rack-Mountable) Table 1–1 DWZZH HUB Functional Specifications (Cont’d) Feature Cable Fault Glitch Elimination Termination Differential Service There are no user serviceable functions on these products. Contact Digital service personnel all service. Agency Approvals UL, CSA, FCC Class B, TUV Environmental Specifications Relative Humidity...
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Page 17: Setting Up The Dwzzh-09
This chapter gives instructions for setting up and configuring the DWZZH-09 Hub. Set Up DWZZH-09 1. After removing the unit from the box, shipping material, and plastic bag, set it in a secure place or mount in a rack. 2. Remove the following parts from the shipping bag: 0.5m Cable, P/N BN37A-0E Tri-link If you do not have all of the above listed parts,... -
Page 18: Install Tri–Link And Cable In Storage Ports Of Sbbs
DWZZH 16–Bit UltraSCSI Hub (Rack-Mountable) 2. Install and secure tri-link in storage port of right-hand SBB (-A5). Then install and secure the opposite end of the cable in the storage port of the left hand SBB (-05), Figure 2-2. Figure 2-2 Install Tri-link and Cable in Storage Ports of SBBs 3. -
Page 19: A Sample Configuration
Chapter 2. Setting Up the DWZZH-09 Figure 2–3 A Sample Configuration EK–SMDZS–UG. B01 2–3... -
Page 20: Configuration Note
DWZZH 16–Bit UltraSCSI Hub (Rack-Mountable) Configuration Note According to the UltraSCSI Configuration Guidelines (included in your purchase), the maximum allowable cable distance for an UltraSCSI Domain is 74 meters. Each element, including the DWZZH-09 has an associated relative cable distance value associated. Cables count as their specified distance, (including the 0.5 meter jumper cable between the SBB Hubs);... -
Page 21: Using The 16-Bit Ultrascsi Hub
SCSI bus data transmission rates. Large Hub Fair Arbitration The DWZZH-S5 and the DWZZH-09 can be operated with Fair Arbitration enabled or disabled. Although it is recommended that both be operated with Fair Arbitration enabled, it is not required. -
Page 22: Large Hub Addressing Configurations
Figures 3-1 and 3-2 show the physical layout of the ports and their associated SCSI ID assignments on the DWZZH-S5 and DWZZH-09 Hubs. 3.2.1 Narrow Addressing Setting The large Hub can be used with SCSI bus architectures that are limited to eight ID assignments such as Digital Unix 4.x and earlier versions (Figure 3-5 shows... -
Page 23: Dwzzh–S5 Scsi Id Assignments
Chapter 3. Using the 16-Bit UltraSCSI Hub Figure 3–1 DWZZH–S5 SCSI ID Assignments C on tro lle r P ort H o st P o rt H o st P o rt S C S I ID 6-0 S C S I ID 15... -
Page 24: Front Panel
Front Panel Figures 3-3 and 3-4 show the location of the front panel controls and indicators for the DWZZH-S5 and the DWZZH-09 Hubs. The DWZZH-09 Hub has two SBBs with each SBB having a switch and LED indicator. It is recommended that the Fair Arbitration switch be set in identical positions on all Hubs residing on the same SCSI bus. -
Page 25: Dwzzh–S5 Front Panel
Chapter 3. Using the 16-Bit UltraSCSI Hub NOTE The black part of the switch in Figure 3-3 indicates the position of the switch. Figure 3–3 DWZZH–S5 Front Panel Fa ir D isa ble P o w er B u sy S H R -10 7 0 EK–SMDZS–UG. -
Page 26: Fair Arb Disable
D is ab le 3.3.1 Fair ARB Disable The large Hub contains a switch on the front panel that allows the user to disable the Fair ARB feature of the Hub. When Fair ARB is disabled, the Hub services SCSI arbitration cycles in the conventional SCSI priority order. Host port SCSI ID assignments are not linked to the physical port location in the Hub when Fair ARB is disabled. -
Page 27: Dwzzh–S5 Scsi Narrow Id Assignments
Chapter 3. Using the 16-Bit UltraSCSI Hub Figure 3–5 DWZZH–S5 SCSI Narrow ID Assignments C on tro lle r P o rt H ost P ort H ost P ort S C S I ID 6-4 S C S I ID 3... -
Page 28: Determining The Configuration
DWZZH 16–Bit UltraSCSI Hub (Rack-Mountable) Figure 3–6 DWZZH–S5 SCSI Narrow Addressing Jumper W1 (To enable narrow addressing mode, install a jumper at W1 Determining the Configuration The UltraSCSI Hub is used in end–bus SCSI bus configurations only. The SCSI bus segments require TERMPOWER supplied from the remote connection to enable the SCSI Hub port for that segment. -
Page 29: Installing The Dwzzh-09 Upgrade Kit
This chapter gives instructions for installing a DWZZH-09 Upgrade Kit in a DWZZH-S5. It is possible to upgrade a DWZZH-S5, five port Hub to a DWZZH-09, with the purchase and installation of the DWZZH-09 Upgrade Kit. This kit contains (See Figure 4-1): One DWZZH-A5 5.25"... -
Page 30: Install Upgrade
Install Upgrade 1. Remove DWZZH-A5 SBB from packaging. 2. Remove three bulkhead covers from the right-hand side of the DWZZH-S5 unit. 3. Slide the DWZZH-A5 SBB into the right-hand slots in shelf, where covers were just removed. See Figure 4-2. -
Page 31: Attach Tri–Link To Cable
Figure 4-3 Attach Tri-link to Cable 2. Install and secure tri-link in storage port of right-hand SBB. Then install and secure the opposite end of the cable in the storage port of the left hand SBB, Figure 4-4. Figure 4-4 Install Tri-link and Cable in Storage Ports of SBBs 3. -
Page 33: Swcc And Ultrascsi Hubs
SWCC and UltraSCSI Hubs This chapter is intended to provide you with important information regarding the use of StorageWorks Command Console on SCSI buses that have an UltraSCSI Hub. While the information provided here is important, it is essential that you have read the SWCC Manual and Release Notes. -
Page 34: Running One Swcc Agent For A Particular Storage Subsystem
DWZZH 16-Bit UltraSCSI HUB (Rack-Mountable) This type of configuration would prevent systems with different SCSI IDs from accessing disks ‘belonging to’ a particular SCSI ID, which promotes data security between servers on a shared SCSI bus; however, it does not prevent SWCC from performing tasks on those disks. - Page 35 This Appendix identifies the parts that can be removed and replaced from the DWZZH-S5/-09 16-Bit UltraSCSI Rack-mountable Hubs. The following lists and illustrations identify the removable parts of the DWZZH-S5 and DWZZH-09 Hubs and are intended for reference purposes. See Figures A-1 and A-2. Table A-1 Removable Parts of the DWZZH-S5...
- Page 36 DWZZH 16–Bit UltraSCSI Hub (Rack-Mountable) Figure A-1 Removable Parts of the DWZZH-S5 Figure A-2 Removable Parts of the DWZZH-09 A–2 S H R -1111 S H R -111 2 EK–SMDZS–UG. B01...
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Page 37: Glossary
Glossary This Glossary includes an alphabetized listing and brief definition of the abbreviations, acronyms, COMPAQ-specific references, and other technical terms that are used in this manual and that may be unfamiliar to the reader. adapter See SCSI bus converter. building block shelf See SBB shelf. - Page 38 DWZZH 16–Bit UltraSCSI Hub (Rack-Mountable) initiator A SCSI device that requests another device on the bus to perform an operation. Any device on the bus can be an initiator or a target. logical bus A single-ended, physical bus connected to a differential, physical bus by a SCSI bus converter. personality module The BA356 module that interfaces the SCSI-bus to the BA356 shelf.
- Page 39 See SCSI. StorageWorks The Compaq set of enclosure products that allows customers to design and configure their own storage subsystem. Components include power, packaging, and interconnections in a StorageWorks shelf. SBBs and array controllers are integrated therein to form level enclosures to house the shelves.