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StorageWorks Solutions
TZ8x7-Series Tape Drive SCSI Bus
Configuration and Installation Guide
Order Number: EK–TZ8X7–IG. A01
This document contains instructions for planning and installing SCSI
buses for TZ8x7-series tape drives in StorageWorks cabinets.
Digital Equipment Corporation
Maynard, Massachusetts
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Summary of Contents for DEC StorageWorks TZ8x7 Series
- Page 1 StorageWorks Solutions TZ8x7-Series Tape Drive SCSI Bus Configuration and Installation Guide Order Number: EK–TZ8X7–IG. A01 This document contains instructions for planning and installing SCSI buses for TZ8x7-series tape drives in StorageWorks cabinets. Digital Equipment Corporation Maynard, Massachusetts...
- Page 2 January 1994 While Digital believes the information included in this publication is correct as of the date of publication, it is subject to change without notice. Digital Equipment Corporation 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 description.
- Page 3 TZ8x7-Series Tape Drive SCSI Buses This chapter presents general information on the arrangement and cabling of TZ8x7-series tape drive Small Computer System Interface (SCSI) buses in StorageWorks™ cabinets. 1.1 TZ8x7-Series Tape Drive SCSI Buses TZ8x7-series tape drives are used in either storage-only or controller/storage cabinet configurations.
- Page 4 Figure 1–1 Storage-Only Cabinet SCSI Bus Arrangements TZ8x7-SERIES TZ8x7-SERIES TZ8x7-SERIES TZ8x7-SERIES TAPE DRIVE TAPE DRIVE TAPE DRIVE TAPE DRIVE REAR PANEL 17-03831 SCSI ADAPTER CONNECTORS CABLE (.2 METER H8574A LENGTH) TERMINATOR BC19J-1E JUMPER CABLE (.5 METER LENGTH) CONTROLLER CABLE (BN21H-xx SCSI A CABLE-LENGTH TO SUIT APPLICATION) SINGLE-ENDED INTERFACE...
- Page 5 Section 2.2 presents further information on the planning and installation of TZ8x7-series tape drive buses in StorageWorks storage-only cabinets. 1.1.2 Controller/Storage Cabinet Configurations In a controller/storage cabinet configuration, the controller for devices in the cabinet is located within the cabinet. The SCSI bus arrangement for TZ8x7-series tape drives in StorageWorks controller/storage cabinets is shown in Figure 1–2.
- Page 6 1.2 TZ8x7-Series Tape Drive Bus Connections The TZ8x7-series tape drive connects to its host system or controller using a single-ended, narrow, SCSI bus. The approximate transfer rate for the tape drive is 3 MB per second, allowing a SCSI bus length of up to 6 meters (19.7 feet). Two connectors on the rear panel of the TZ8x7-series tape drive are provided to connect the unit to its SCSI bus.
- Page 7 The rear panel connectors are 50-pin, low-density, SCSI connectors that do not mate with standard StorageWorks SCSI A cables. To connect the TZ8x7-series tape drive to a StorageWorks SCSI bus, you must use an adapter cable (Digital part number 17–03831). The adapter cable and its installation are shown in Figures 1–3 and 1–4.
- Page 9 Planning and Installing a TZ8x7-Series Tape Drive SCSI Bus This chapter presents detailed procedures for planning and installing SCSI buses for TZ8x7-series tape drives in StorageWorks cabinets. 2.1 General Planning Steps Following are the general steps required to configure a TZ8x7-series tape drive bus in a StorageWorks cabinet.
- Page 10 2.2.1 Determining the Number of Tape Drives On the Bus You can install from one to four TZ8x7-series tape drives in a StorageWorks storage-only cabinet, depending upon the model of the cabinet. See the installation and user’s guide for your specific cabinet for instructions on the number and location of tape drives in the cabinet.
- Page 11 Note that TZ8x7-series tape drives are always physically installed in the upper portion of the StorageWorks cabinet. Some host cable length is consumed by the cable run from the first tape drive on the bus to the bottom of the cabinet. This distance is approximately 2 meters for SW800 cabinets, and 1 meter for SW500 cabinets.
- Page 12 2.3.1 Determining the Number of Tape Drives On the Bus You can install one or two TZ8x7-series tape drives in a StorageWorks controller/storage cabinet. See the installation and user’s guide for your specific cabinet for instructions on the number and location of tape drives in the cabinet. The tape drives may be configured on one or two buses, but each tape drive bus should contain only tape drives.
- Page 13 2.3.5 Installing the Tape Drives and Cabling See the installation and user’s guide for your specific StorageWorks cabinet model for detailed tape drive mechanical installation information. Using Figure 1–2 as a guide, install adapter and jumper cables to interconnect the tape drives within the cabinet.
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