Except as expressly stated herein, Spectra Logic Corporation makes available the Spectra 10000 Library and
associated documentation on an “as is” basis, without warranty of any kind, either expressed or implied,
including but not limited to the implied warranties of merchantability or fitness for a particular purpose. In
no event shall Spectra Logic be liable for any loss of profits, loss of business, loss of use or data, interruption
of business, or for indirect, special, incidental or consequential damages of any kind, even if Spectra Logic
has been advised of the possibility of such damages arising from any defect or error.
Information furnished in this manual is believed to be accurate and reliable. However, no responsibility
is assumed by Spectra Logic for its use. Due to continuing research and development, Spectra Logic may
revise this publication from time to time without notice, and reserves the right to change any product
specification at any time without notice.
Some products or services mentioned in this manual are provided by companies other than Spectra
Logic. Inquiries about one or more of these products or services should be sent directly to the company
in question. Where this manual refers to the brand or product names, their registered trademarks and
trademarks may be registered in this country, other countries, or both.
License Agreement
Purchase of a Spectra Logic tape library includes a license to use one copy of the control software. This
software is loaded into non-volatile RAM in the tape library and may be upgraded or reloaded from a
tape. This software may not be copied for use on another machine without the express written consent
of Spectra Logic.
This software license includes unlimited use on the Spectra Logic library hardware for which it was
purchased. The license applies to, but is not limited to, the number of slots in the carousel, the number
of drives in the library, and bar code capabilities.
A license to extend the capabilities or configuration of the software or hardware in this library may be
purchased from Spectra Logic or through an authorized Spectra Logic reseller. Purchase of an upgrade
through Spectra Logic or one of its authorized resellers implicitly includes an extension of the software
license to include the functionality for the component purchased.
Spectra Logic Contact Information
United States OfficeEuropean Office
Mailing Address
Phone
Fax
Spectra Logic Corporation
1700 N 55th Street
Boulder CO 80301
USA
(800) 833-1132 or (303) 449-6400
(303) 939-8844
Mailing Address
Phone
Fax
Spectra Logic Europe Limited
Hampden House
Monument Business Park
Warpsgrove Lane
Chalgrove Oxon
UK-OX44 7RW
+44 (0) 870 112 2150
+44 (0) 870 112 2175
Web Site
http://www.spectralogic.com
2
Warnings and Cautions
Tapes
Caution: Use only the data cartridges approved for use in the particular
drives installed in your Spectra 10000 library. Improper data
cartridges will result in damage to the drives, library and
cartridges.
Bar Code Scanner
Warning: Use of controls or adjustments or performance of procedures
other than those specified herein may result in exposure to
hazardous visible laser light.
Notices
AC Power
Warning: Risk of electrical shock. Do not remove the library cover. To
remove AC power from the library, unplug the power cord from
the power inlet. There are no user-serviceable parts within the
library.
Lithium Battery
Warning: The UCM board in the library contains a lithium battery. The
battery is not serviceable by the user. Return the UCM board to
Spectra Logic for proper service. Improper disposal could result
in an explosion.
3
Rack Mounting
Cabling
Caution: Flat SCSI cables need a minimum rack depth of 27 inches, and
the rack must be EMI/RFI shielded. Round SCSI cables need a
minimum rack depth of 29 inches.
Caution: The library unit should be properly grounded to the rack
equipment. This ground connection must be maintained when
the supply connection is other than a direct connection to the
branch circuit.
Operating Environment
Caution: Installing library units in a rack system must not reduce the air
flow within the rack. The maximum recommended ambient
temperature for the library is 89.6°F (32°C).
Notices
Power
Safety
Caution: Make sure the power requirements of the library plus the
cumulative power draw of the other equipment in the rack do
not overload the supply circuit and/or wiring of the rack.
Warning: The library weighs approximately 61 pounds. Use caution when
lifting the library to install it in a rack. Ask for help when lifting
the library.
Warning: Always stack the rack from the bottom up to ensure a stable and
This guide describes the installation and operation of the Spectra 10000 library,
including troubleshooting information.
This guide addresses network administrators who maintain and operate their backup
systems. This guide assumes a familiarity with SCSI and/or Fibre Channel, as well as a
technical knowledge of tasks such as configuring operating systems, installing drivers,
and connecting cables.
Related Publications
These publications are also available from Spectra Logic:
•The Spectra 10000 Library Release Notes (P.N. 92844034) provides the most up-to-
date information about the library, drives, and media.
•The Spectra 10000 Library Developer Guide provides SCSI reference information
useful to application developers. It can be found on the Spectra Logic Web site at
http://www.spectralogic.com/support/index.cfm/fuseaction/displayProductDocs/.
Conventions Used in This Manual
This manual uses the following conventions to highlight extra information and to
emphasize important safety tips:
Note: Read the information marked Note for additional points or
suggestions about the topic or procedure being discussed.
Caution: Read the information marked Caution to learn ways to avoid
damaging the library, tape drives, or other equipment.
Warning: Read the information marked Warning to learn ways to avoid
personal injury.
9
Chapter 1. Introduction
About the Spectra 10000 Library
The Spectra 10000 library configured for SCSI operation includes up to four Sony AIT
tape drives and one fixed tape carousel, which can store up to 43 data cartridges. The
robotics, controllable through SCSI-2 commands or through a Serial to SCSI Command
Language (SSCL) interface, are fast and reliable and certified for more than one million
actuations.
SCSI Configuration
When configured to use both wide/ultra LVD SCSI busses, with four AIT-3 drives using
AIT-3 data cartridges, the Spectra 10000 library can store up to 10.4 TB of compressed
data, with a transfer rate (compressed) of up to 124.8 Megabyte per second (MB/sec).
Note: HVD SCSI does not support Ultra-3 transfer rates.
The SCSI library’s reliable network backup lends itself to use in many different storage
management environments. See Storage Management Options on page 18 for some
examples of the different configurations in which the Spectra 10000 library can be
used.
Fibre Channel Configuration
The Spectra 10000 library configured for Fibre Channel offers exceptional data storage
capacity with the speed and flexibility offered by Fibre Channel connectivity. The highspeed Sony AIT drives in the library provide a high standard of performance and
reliability. The library’s integrated Fibre Channel interface board is equipped with a
gigabit interface converter (GBIC) module that allows users choose between copper
and optical cabling. This cabling spans a greater distance than SCSI—up to 10 km with
optical cabling and up to 30 meters with copper cabling—while achieving data transfer
speeds of up to 100 MB/sec.
The Fibre Channel library’s high-speed network backup lends itself to use in many
different storage management environments. See Storage Management Options on
page 18 for some examples of the different configurations in which the Spectra 10000
library can be used.
10
Library Components
Front Panel Components
Chapter 1. Introduction
Power button
Front panel release
Touchs creen displ ay
Figure 1-1 The library’s front panel components.
Library door
Door button
Front Panel Release This releases the hinged front door panel when a plastic card is slid
through it, allowing you to access the library air filter for inspection or replacement.
Library Door The door allows you to load and unload tape cartridges.
Door Button The door button opens or closes the door, allowing you to insert or
remove cartridges.
Touchscreen Display The touchscreen display enables you to view library information
and access screens from which you can configure library settings. Read the following
section on the library’s menu screens for more information on how these screens can
be navigated.
11
Chapter 1. Introduction
Library Menu Screens
Each menu screen on the library uses interactive buttons, like those shown below. You
can touch these buttons to view other screens or to change library settings.
Press Help to view online help for
the current screen.
Press the +
and - symbols
on buttons to
change
settings.
The
configured
setting is
displayed
beside the
button.
Press buttons to access other screens.
(Fibre Channel button on Fibre
Channel libraries only.)
Figure 1-1 The library’s interactive buttons (first Configuration screen).
Online help is available for all user screens, describing the controls and information
displayed on the screen from which you accessed the online help.
12
Chapter 1. Introduction
The overall structure of the menu screens is illustrated in the following diagram;
important settings are listed beside the screen from which they can be adjusted
.
SCSI ID
Model
Error Rates
Compre ssion
Serial Number
Rev Number
SCSI Bus Mode
Switch Override
Drive S/N
Spectra 10000
Drive Info
Screen 1
Drive Info
Screen 2
Move Tapes
Screen
Barcodes
Screen
ECC1
Screen
ECC2
Screen
Main Screen
MCE
Screen
Date
Time
Volu me
Brightness
Fibre Channel
RS232
Emulation
SCSI Initiator
ECC Fault Check
Queued Unloads
Library 2 Slots
SCSI Bus 2 ID
SCSI Bus Mode
Emulate 1/2
Emulate 3/4
Barcode Enable
Barcode Chksum
Autoread Barcodes
Menu Screen
Miscellaneous
Screen
Conf ig.
Screen 1
Conf ig.
Screen 2
Conf ig.
Screen 3
Conf ig.
Screen 4
Create Code
Tape Screen
Load
Firmware
Screen
View
Trace
Screen
Change
Password
Screen
Lock
Screen
Figure 1-2 Diagram of the library’s menu screens.
13
Internal Components
Chapter 1. Introduction
Lid sensor
Tape carou se l
Robotic
picker
Figure 1-3 The library’s internal components.
Power supply
Tape drives
UCM board
(SDC board)
(Fibre Channel board)
Bar code scanner
Tape Drives The library includes up to four Sony AIT tape drives, installed in the library
on customized Spectra Logic drive sleds.
Tape Carousel Depending on the size ordered at time of purchase, the fixed tape
carousel can store either 20 or 40 data cartridges when all four drives are installed.
(When fewer than four drives are installed, the unused drive slots become additional
tape cartridge slots.)
Robotic Picker The picker moves cartridges between tape slots, tape drives, and the
library door. The picker may also include a bar code reader, which scans bar code
labels on data cartridges.
Power Supply The power supply automatically detects the voltage and frequency of the
power source, either 110-volt or 220-volt AC, 50/60 Hz. The power cord shipped with
the library can handle either voltage.
UCM Board The UCM board is the library’s control center.
SDC Board Found only in HVD SCSI libraries, the single-ended to differential converter
(SDC) board translates SCSI signals from single-ended to differential format.
Fibre Channel Board Found only in Fibre Channel libraries, this board translates SCSI
signals to a flexible, high-speed Fibre Channel format.
14
Chapter 1. Introduction
SCSI Library Rear Panel Components
SCSI Port 1 INSCSI Port 1 OUT
SCSI Port 2 IN
SCSI Port 2 OUT
Figure 1-4 The SCSI library’s rear panel components.
Drive SCSI IDs
Library
SCSI ID
Library
Configuration
Fuse
lights
Serial
port
Power
connector
SCSI Ports The four SCSI ports enable you to connect the library as a device on a SCSI
bus, and attach terminators for proper device termination.
Drive SCSI IDs The SCSI ID switches control the SCSI IDs for installed tape drives. SCSI
ID settings for uninstalled tape drives are ignored by the library.
Library SCSI ID The library SCSI ID switch sets the SCSI ID for the library itself.
Library Configuration The library configuration switch determines the operating mode
of the library. The library configuration switch default setting is 0.
Fuse Lights There are three fuse lights, one for each fuse. When you need to replace
one of the library fuses, the appropriate fuse light will light up.
Serial Port The nine-pin serial port lets you connect a serial cable for diagnostics or
manual robotics control.
Power Connector The power connector provides a port for AC power.
15
Chapter 1. Introduction
Fibre Channel Library Rear Panel Components
Ethernet port
Fibre
Channel
port
Figure 1-5 The Fibre Channel library’s rear panel components.
Drive SCSI IDs
Library
SCSI ID
Library
configuration
Fuse
lights
Serial
port
Power
connector
Fibre Channel Port The Fibre Channel port allows you to choose between three GBICs
for your library cabling.
Ethernet Port This port allows Spectra Logic support technicians to gain information
about your library.
Drive SCSI IDs The drive SCSI ID switches control the SCSI IDs for installed tape drives.
SCSI ID settings for uninstalled tape drives are ignored by the library.
Note: Do not change the default settings for the drives (2, 3, 4, and 5). If
the default settings are changed, the drives will not be recognized.
Library SCSI ID The library SCSI ID switch sets the SCSI ID for the library itself.
Note: Do not change default SCSI ID (6) for the library. If the default
setting is changed, the robotics will not be recognized.
16
Chapter 1. Introduction
Library Configuration The library configuration switch determines the operating mode
of the library. The library configuration switch default setting is 0.
Fuse Lights There are three fuse lights, one for each fuse. When you need to replace
one of the library fuses, the appropriate fuse light will light up.
Power Connector The power connector provides a port for AC power.
17
Chapter 1. Introduction
Storage Management Options
Following are a few examples of how the Spectra 10000 library can be used in different
storage management environments.
Direct Attached Storage (DAS) Environment
Clients
Servers
SCSI Library
Figure 1-6 A SCSI library in a DAS environment.
Network Attached Storage (NAS) Environment
Clients
Server
Fibre Channel
Switch
Filers
Fibre Channel
Library
Figure 1-7 A Fibre Channel library in a NAS environment.
18
Chapter 1. Introduction
Storage Area Network (SAN) Environment
Clients
Servers
Fibre Channel
Switch
Fibre Channel
Library
Figure 1-8 A Fibre Channel library in one type of SAN environment.
LAN
Servers
Fibre Channel
Switches
Disk Arrays
Figure 1-9 A Fibre Channel library in another type of SAN environment.
19
Fibre Channel
Library
Chapter 1. Introduction
Professional Services
Spectra Logic’s Professional Services group provides many services related to Spectra
Logic libraries. These services include installation, relocation, recertification,
consulting, training, maintenance, and more.
Professional Services can help you with new ways to use your library, or with
advanced solutions for your entire storage infrastructure. For more information about
Professional Services, contact your sales representative.
20
2Preparing the Host System
This chapter reviews the following operating system information:
• Selecting a SCSI Bus for the Library (SCSI Libraries Only)
• Determining SCSI ID Usage
• Sony AIT Device Driver Support
Before Configuring the Library
Before you begin configuring the library, you must prepare the host system you want
to use with your library. Preparing the host system may involve the following:
• Determining the SCSI bus on which host the library will be placed
• Determining which SCSI IDs are currently used by the host and any other attached
SCSI devices
• Adding device files for the library, tape drives or both
• Rebuilding the kernel (for some UNIX hosts)
Note: This guide does not include information on specific operating
systems. Refer to your operating system’s documentation for
installation instructions, or see the Server Preparation Document for Spectra Logic Libraries, an online document located on the
Spectra Logic Web site at http://www.spectralogic.com/support/
index.cfm/fuseaction/displaySupportDocs/.
21
Chapter 2. Preparing the Host System
Selecting a SCSI Bus for the Library
(SCSI Libraries Only)
The single-ended/low-voltage differential (SE/LVD) library operates in either singleended or low-voltage differential SCSI mode, depending on the type of bus that is
attached. When attached to a single-ended SCSI adapter, it will operate within the
maximum specifications for that bus type.
Note: The entire bus (including host bus adapter, devices and
termination) must be configured for LVD operation in order to
operate in LVD mode. Attaching any single-ended SCSI device to
an LVD bus renders the entire bus (and all attached devices)
subject to the maximum specification requirements for
single-ended SCSI (including maximum cable lengths).
The terminator shipped with the SE/LVD library can function in either mode. To check
the mode in which your library is operating, look at the library terminator and the
terminator’s light-emitting diode (LED). The top of the terminator lists the color of the
LED for each mode.
Note: The HVD library includes an active HVD terminator.
SCSI specifications for LVD, SE, and HVD modes are shown in this table:
SCSI SpecificationsLVD ModeSE ModeHVD Mode
SCSI Bus Width16 bits16 bits16 bits
Maximum Bus Speed80 MB/sec40 MB/sec40 MB/sec
Maximum Bus Cable Lengths12 meters
a
Maximum cable length requirements include the internal cabling for each device. (The library contains 60 centimeters [24 inches]
of cabling inside the library.)
a
1.5 meters
a
25 meters
a
Determining SCSI ID Usage
Each device on the SCSI bus to which the library is attached must have its own SCSI
ID. Examine your host system and attached devices to determine which SCSI IDs are
22
Chapter 2. Preparing the Host System
already in use, and which SCSI IDs are still available. The library requires one SCSI ID
for each installed drive, as well as a SCSI ID for the library itself.
Sony AIT Device Driver Support
Spectra Logic, working with Sony, has performed system compatibility testing to
ensure operability on most popular operating systems and hardware platforms. On
many platforms, the Spectra 10000 library and Sony AIT drives will function using the
standard device drivers used for other 8mm drives and libraries.
Operating System Compatibility
Some operating system and hardware platforms do not support the Sony AIT tape
drives with standard device drivers. For these instances, Spectra Logic Technical
Support will provide you with detailed installation procedures that will allow the
system to function properly.
Software Compatibility
The Spectra 10000 library is natively supported by most third party software
applications. Current software compatibility information can be found on the Spectra
Logic Web site at http://www.spectralogic.com/support/index.cfm/fuseaction/
displayCompatibility/.
If You Need Assistance
If you have questions regarding your library, drives, operating system, software, or
drivers, you can find most of your answers in the Technical Support Knowledge Base,
located on the Spectra Logic Web site at http://www.spectralogic.com/support/kbase/
index.cfm/.
23
Chapter 2. Preparing the Host System
24
3Preparing the Library
Preparing the library includes the following, which are outlined in this chapter:
• Unpacking the Library
• Selecting an Appropriate Environment for the Library
• Selecting the Mode of Library Operation
• Setting SCSI IDs
• Setting the Library Configuration Switch
• Connecting the SCSI Cables and Terminators
• Connecting the Serial Cable
• Connecting the Library to Fibre Channel
• Connecting the AC Power
Unpacking the Library
The Spectra 10000 library is shipped with the following items:
• Spectra 10000 Library Release Notes
• Spectra 10000 Library User Guide (this guide)
• One Spectra Logic screwdriver
• One AC power cord
• Two SCSI terminators (for SCSI libraries only)
• One front panel filter element
Note: Keep the library’s shipping carton and foam inserts. If the library
needs to be shipped for any reason, it must be packaged in its
original box and packing material for the warranty to remain valid.
See Packing the Library for Shipment on page 89 for information
on the correct way to repackage the library.
See the Spectra Logic Repair Policy on page 106 for information on
returning a library for service.
25
Chapter 3. Preparing the Library
Selecting an Appropriate Environment for the Library
Media and Hardware Environment
When planning the installation of your library, note that the library, drives and media
must be maintained in a controlled environment. Environmental extremes cause erratic
operation and possible failures. Choose an environmentally controlled location that is
free of smoke and dust. Choose a location that is also temperature and humidity
controlled.
Handle the library with the same care you would use with any computer or computer
peripheral equipment. If the library is mounted in a rack, be sure that the temperature
in the rack does not exceed the maximum ambient operating temperature of the library
and that the library is well ventilated with adequate air flow at all times.
Library operating specifications are:
• Temperature: 41°F to 86°F (5°C to 30°C)
• Relative humidity: 20 percent to 80 percent (non-condensing)
• Maximum wet bulb temperature: 77°F (25°C)
Caution: Before using any new media, condition the data cartridges by
allowing the cartridges to reach ambient temperature for a time
at least equal to the period during which it has been out of the
operating environment (up to a maximum of 24 hours).
See Sony AIT Tape Drive Specifications on page 113 and Sony AIT Media Specifications
on page 116 for additional information on drives and media.
26
Chapter 3. Preparing the Library
Air Quality
Large quantities of airborne particles cause erratic operation of the drives and library.
The library comes with an intake air filter behind the front panel to reduce the amount
of airborne particulates entering the library.
The table below shows the maximum amount of particulate contamination per cubic
foot and cubic meter of air which the library’s filter can handle. If you are exceeding
these limits, filter the air in the room where you are using the library.
Number of Particles
Particle Size
0.1 microns2.5 x 10
0.5 microns1.0 x 10
5.0 microns7.0 x 10
≥ Particle Size per Cubic Foot≥ Particle Size per Cubic Meter
6
6
3
8.8 x 10
3.5 x 10
2.5 x 10
7
7
5
Rack Mount vs. Tabletop Configuration
The standard library configuration uses a 17-inch tabletop chassis. An optional rack
mounting kit is available, using faceplate extenders which extend beyond the width of
the standard front panel and cover the mounting ears on the library and the side rails
of the mounting rack.
Spectra Logic offers a rack mount upgrade kit that allows a user to convert a tabletop
library to either a white or black rack mount library. Contact your sales representative
for more information about these kits.
Installing in Enclosed Equipment Racks To use an enclosed rack for the library, you need
an enclosed rack mount model or an enclosed rack mount conversion kit. To identify
models compatible with enclosed racks, compare the part number from the library’s
serial number sticker (located on the back of the library) to the part number shown
below. Make sure that your library’s serial number contains an M or a 3 in the last
position (shown here).
9284AXXX-X-XM or 9284AXXX-X-X3
An M shown in the part number indicates a white enclosed rack mount model, and a 3
indicates a black enclosed rack mount model.
Spectra Logic offers an enclosed rack mount upgrade kit that allows a user to convert a
non-compatible library for both white and black enclosed rack mount models. Contact
your sales representative for more information about these kits.
27
Chapter 3. Preparing the Library
Preparing to Connect the Library
Before connecting the library to the host system, you must prepare the library by
completing the following steps:
1. Select the mode of library operation. See Selecting the Mode of Library
Operation on page 29.
2. If a SCSI interface library, set the library SCSI IDs, or, if a Fibre Channel
interface library, set the library for soft or hard addressing. See Setting SCSI IDs on page 36.
3. Set the library configuration switch. See Setting the Library Configuration
Switch on page 38.
4. Connect the appropriate cables, terminators, or GBICs. See Connecting the SCSI
Cables and Terminators on page 39, Connecting the Serial Cable on page 40, and/or Connecting the Library to Fibre Channel on page 41.
5. Connect AC power to the library. See Connecting the AC Power on page 43.
28
Chapter 3. Preparing the Library
Selecting the Mode of Library Operation
A SCSI library can operate in either single-bus or dual-bus mode.
Note: The following information on single-bus and dual-bus libraries
only applies to SCSI libraries.
For more information on SE/LVD libraries, see Selecting a SCSI Bus for the Library (SCSI Libraries Only) on page 22.
Single Bus Mode
If you want to use only one host with one SCSI controller, operate the library in either
one of these single-bus configurations:
OptionSettingsSCSI Cabling
If you have a
single-ended library
with one to two drives.
If you have a
differential library
(HVD or LVD) with three
to four drives.
If the library is the last device on the SCSI bus, connect terminators to the SCSI output
connectors. If the library connects to another SCSI device, connect the SCSI cable from
the output of the library to the next SCSI device. Terminate the SCSI output of the final
device on the SCSI bus.
If you have decided to operate in single-bus mode, the next step is to set the library
SCSI ID. See Setting SCSI IDs on page 36.
Set the rear panel Library SCSI ID
switch to a unique ID.
Set the SCSI Bus 2 ID setting to OFF.
Set the rear panel Library SCSI ID
switch to a unique ID.
Set the SCSI Bus 2 ID setting to OFF.
Terminate SCSI Port 1 Out.
Attach host SCSI cable to SCSI Port 1 In.
Ensure that drives are installed in Drive Slots 1 and 2.
Use the six-inch external SCSI link (P.N. 4531) to connect
SCSI Port 1 Out to SCSI Port 2 In.
Attach host SCSI cable to SCSI Port 1 In.
Terminate SCSI Port 2 Out or attach a SCSI cable to the
input of another SCSI device.
Note: If you have a single-ended library with three or four installed
drives, you must operate the library in dual-bus mode. See The
SCSI Bus on page 118 for details on SCSI bus lengths.
29
Chapter 3. Preparing the Library
Dual Bus Mode
If you want to use two hosts, or if you have a library (either single-ended or
differential) with three or four installed drives and want the fastest transfer rate
possible, operate the library in either of these dual-bus configurations:
OptionSettingsSCSI Cabling
If you have a
single-ended or
differential library and
want to use one host...
If you have a
single-ended or
differential library and
want to use two hosts
(dual logical library
operation)...
If the library is the last device on the SCSI bus, connect terminators to the SCSI output
connectors. If the library connects to another SCSI device, connect the SCSI cable from
the output of the library to the next SCSI device. Terminate the SCSI output of the final
device on the SCSI bus.
Set the rear panel Library SCSI
ID switch to a unique ID.
Set the SCSI Bus 2 ID setting to
to a unique ID.
Set the rear panel Library SCSI
ID switch to a unique ID.
Set the SCSI Bus 2 ID setting to a
unique ID.
Configure Library 2 slots setting.
Terminate SCSI Port 1 Out.
Attach Host A SCSI cable to SCSI Port 1 In.
Terminate SCSI Port 2 Out.
Attach Host A SCSI cable to SCSI Port 2 In.
The host must have two SCSI controller cards—one for each
input.
Terminate SCSI Port 1 Out.
Attach Host A SCSI cable to SCSI Port 1 In.
Logical Library 1 has exclusive rights to Drives 1 and 2 on SCSI
Port 1.
Terminate SCSI Port 2 Out.
Attach Host B SCSI cable to SCSI Port 2 In.
Logical Library 2 has exclusive rights to Drives 3 and 4 on SCSI
Port 2.
Note: It is possible to connect 8-bit (narrow) SCSI devices to the 16-bit
(wide) SCSI connectors on the library, as long as the library is the
first device after the host on the SCSI bus.
Adapters are available that terminate the upper eight bits of the
wide SCSI bus and interface 68-pin micro-SCSI connectors to 50pin SCSI connectors (see SCSI Cables and Terminators on page
119).
See The SCSI Bus on page 118 for details of SCSI bus configuration.
If you have decided to operate the library in dual-bus configuration with two hosts, see
Split-Bus Configuration on page 31.
30
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