Seagate Technology CTT 8000 User manual

CTT 8000
Internal SCSI
Minicartridge
Drive

FCC Notice
This equipment generates and uses radio frequency energy and, if not
installed and used in strict accordance with the manufacturer's
instructions, may cause interference to radio and television reception
which could void the user's authority to operate the equipment. It has
been tested and found to comply with the limits for a Class B digital device
pursuant to Part 15 of FCC Rules, which are designed to provide
reasonable protection against such interference in a residential
installation. However, there is no guarantee that interference will not
occur in a particular installation. If interference does occur, try to correct
it by taking one or more of the following measures:
λReorient or relocate the receiving antenna.
λIncrease the separation between the computer and the receiver.
λConnect the computer into an outlet on a circuit different from
that to which the receiver is connected.
λConsult the dealer or an experienced radio/television
technician for help.
Further, this equipment complies with the limits for Class B digital
apparatus in accordance with Canadian Radio Interference
Regulations.
Cet appareil numérique de la classe B est conforme au Règlement
sur brouillage radioélectrique, C. R. C., ch. 1374.
Seagate and the Seagate logo are registered trademarks of Seagate
Technology. All other trademarks mentioned in this manual are the
property of their respective owners.
Copyright 1996, Seagate Technology. All rights reserved. No part
of this publication may be reproduced, stored in a retrieval system,
or transmitted, in any form or by any means, electronic, mechanical,
photocopying, recording or otherwise, without prior written
permission from Seagate Technology. Product features and
specifications described in this guide are subject to change without
notification.
Document No. 10002473-003
Stocking No. 601-085

Installation Manual Page 1
Introduction
The Seagate internal CTT8000 SCSI minicartridge drive is
a fully integrated system that offers 4 Gigabytes (GB) of
native storage capacity with up to 8 GB of storage using
software data compression and the 3M Travan cartridge.
The drive provides a backup rate of up to 30
megabytes/minute (MB/min) without data compression in
a best case scenario with the system optimized1. Under
less than optimum conditions, transfer rates might range
from 18 to 28 MB/min. Given sufficient system resources
and compressible data structures, nominal transfer rates
of up to 60 MB/min can be observed using software data
compression (assumes 2:1 compression ratio).
The CTT8000 drive reads and writes the QIC-3080MC and
QIC-3095MC formats. The drive also provides a backward
read capability by reading the QIC 80,
QIC-3010, and QIC-3020 formats.
Seagate FastSenseTM enables the drive to automatically
sense the fastest supportable data transfer rate of the host
system and then chooses a transfer speed of either 600,
450, or 300 kilobytes/second (KB/sec). The drive meets
QIC-3080 and QIC-3095 specifications.
The drive unit installs internal to the computer in a one-
inch height 3.5-inch or half-height 5.25-inch drive bay.
Figures 1 and 2 illustrate the drive models.
1Actual performance on your system might vary and is dependent on the
system resources available and the structure and type of data compressed.

Internal SCSI Minicartridge Drive
Page 2 Installation Manual
Figure 1
SCSI Travan Minicartridge Drive (3.5-Inch Mount)
6.19" (157.2mm)
1.00"
(25.4mm)
DRIVE ACTIVE
(GREEN)
4.00"
(102.6mm)
0.157" (4mm)
4.00" (101.6mm)
Figure 2
SCSI Travan Minicartridge Drive (5.25-Inch
Mount)
1.685"
(42.8mm)
5.87"
(149.0mm)
0.20" (5.0mm)
0.86" (21.8mm)
5.76" (146.4mm)5.49" (139.4mm)
DRIVE ACTIVE
(GREEN)

Internal SCSI Minicartridge Drives
Installation Manual Page 3
Before You Begin
Keep the following guidelines in mind as you install the
unit:
λTo protect the drive from static electricity, DO NOT
remove it from the anti-static bag until you are
ready to install it.
λBefore you remove the drive from the anti-static bag,
touch a metal or grounded surface to discharge any
static electricity buildup from your body.
!Caution: If you touch static-sensitive parts of
the drive, such as the printed circuit board, and
discharge static electricity, the components may
be damaged.
λHold the drive by its edges only and avoid direct
contact with any printed circuit board exposed.
λLay the drive only on top of the anti-static bag or
return it to the bag when you need to lay it down.
Cabling and Connectors
The drive provides standard, single-ended SCSI
transmission. ANSI SCSI standards specify the technical
requirements for correctly cabling and connecting single-
ended devices.
Either 50-pin flat cable or 25-signal twisted-pair cable
with a maximum length of 6 meters (19 feet) may be used
to connect the drive to its SCSI host adapter output. If
twisted-pair cabling is used, connect the twisted pairs to
physically opposing contacts on the connector.

Internal SCSI Minicartridge Drive
Page 4 Installation Manual
Single-Ended SCSI Connector
The internal drive provides a 50-pin, right-angle, dual-row
connector on the main PCB at the rear of the unit.
Configuring the Drive
The drive mounts internal to the computer in either a 3.5-
inch by one-inch space or in a 5.25-inch half-high space
with the use of mounting rails and a surrounding bezel.
Three simple steps make up the installation procedure:
1. Configure jumpers.
2. Mount the drive unit.
3. Complete the power and interface connections.
The installation procedure is the same for both models
except physically mounting the unit in the computer.
After you configure the jumpers and decide whether or not
you need to add terminators, follow the steps provided for
the size of enclosure into which you are mounting the
drive.

Internal SCSI Minicartridge Drives
Installation Manual Page 5
Configuring Jumpers and Terminators
Figure 3 illustrates the location of the jumpers on the
bottom of the drive.
Figure 3
Location of Jumpers for Drive
SCSI
CONNECTOR
SCSI
PIN 1
POWER
CONNECTOR
NOTE:
Bottom of drive shown.
JUMPER
BLOCK
PIN 1
The following settings should be checked prior to
installation:
lSCSI ID
Note: Figure 4 shows the jumper configurations for
the various SCSI device addresses (IDs) and for the
other options.
lParity
lTerminator power
lTermination
Use the jumpers to set the SCSI device address. You can
also enable parity and enable terminator power by jumper
placements. SCSI terminators must be installed for the
last device on the SCSI bus.

Internal SCSI Minicartridge Drive
Page 6 Installation Manual
Figure 4
Jumper Configurations
10
9
6 4
3
2
1
12
11
14
13
16
15
8
SCSI ID
PARITY ENABLED
JUMPER 7-8 ON
RESERVED
RESERVED
ACTIVE TERMINATION
JUMPER 13-14 ON
TERMINATOR POWER ENABLED
JUMPER 15-16 ON
JUMPER ON JUMPER OFF
PIN PIN PIN SCSI
ID
531
642
OFF OFF 0OFF
ON OFF 1OFF
OFF ON 2OFF
ON ON 3OFF
OFF OFF 4ON
ON OFF 5ON
OFF ON 6ON
ON ON 7ON
75
Notes: In Figure 4, ON means that the jumper shunt
is placed over the two vertical pins. OFF means that
the jumper shunt is removed from the two vertical
pins (or hanging over only one of the pins).
The drive must be turned OFF; then, ON in order for
the jumper placements to take effect, or a SCSI Bus
Reset must be received.
If the default address setting ID is correct for your system,
and you do not choose to change any other options, go to
the following section that explains how to install the drive
unit.
If you need to change any default settings, refer to
Figure 4 and the appropriate following section; make the
changes and then go to the following section that explains
how to install the drive unit.

Internal SCSI Minicartridge Drives
Installation Manual Page 7
SCSI Device Address Jumpers
Be sure that no other device on the SCSI bus has the same
SCSI address.
Figure 4 shows the jumper placements for the various
SCSI ID choices.
Parity
To enable parity, place a jumper shunt over the two
pins7 and 8as shown in Figure 4. Be sure the jumper
shunt is firmly in place.
SCSI Terminator Enable
The last device on the SCSI bus must have termination.
Figure 5 illustrates the termination for two daisy-chain
configurations.
Figure 5
Daisy-Chain Configurations
SCSI Card Tape Drive SCSI
Device
Terminated Not
Terminated Terminated
SCSI Card Tape Drive
SCSI
Device
Terminated Not
Terminated Terminated
1
2
The CTT8000 supports active termination and does not
require the use of terminating resistor packs.

Internal SCSI Minicartridge Drive
Page 8 Installation Manual
Terminator Power Enabled
Terminator power (+5-volt) is enabled by default.
!Caution: If the jumper is installed, be careful
not to short the TERMPWR signal to ground.
The drive contains a terminator power fuse to prevent
damage to drive components in case the terminator power
is shorted. If terminator power is enabled and the SCSI
cable is connected upside down for example, this fuse may
blow to prevent damage to the drive itself. In that case,
return the drive to an authorized repair facility.
Mounting the Drive Unit
The internal drive can be installed in a one-inch high by
3.5-inch form factor or in a half-high by 5.25-inch form
factor (with rails). The drive can be installed in three
different orientations: one horizontally (LED to the left)
and two vertically (LED up and down).
The following section provides directions for mounting the
drive in either a 3.5-inch enclosure or in a 5.25-inch
enclosure.
Installing the Drive
The following steps guide you through installing the
internal drive.
!Caution: Turn off your computer before you
begin the installation. Failure to do so might
result in damage to your equipment or electrical
shock to you.
Note: Because computer models vary between
manufacturers, refer to your computer manual for
specific installation instructions.

Internal SCSI Minicartridge Drives
Installation Manual Page 9
1. Write down the serial number and model number
shown on the drive and put this information in a safe
place. You need this information if you ever call for
service.
2. Refer to the manual that you received with your
computer for instructions about removing the
computer cover and the face plate from the drive bay
in which you plan to install the drive.
Note: If devices are installed in any drive bays
adjacent to the one you are using for the internal
drive, partially removing those devices might give
you more working space.
3. Check that jumper settings and termination are
correct for your installation. (Refer to the previous
text under Configuring the Drive.)
4. Attach any special mounting hardware to the drive
that your system might require. Refer to the
manual that you received with your computer for
requirements.
5. Locate the mounting screw holes in the drive
brackets. Each side contains two sets of holes. Use
the set that aligns the drive properly within the
drive bay.
6. Slide the tape drive into the computer so that the
drive bezel and the computer face plate are flush.
Then, align the mounting holes as shown in
Figure 6.

Internal SCSI Minicartridge Drive
Page 10 Installation Manual
Figure 6
Aligning the Drive in the Computer
0182x
7. Secure the drive using the mounting screws. The
threaded mounting holes are designed for M3.0
metric screws. The maximum length for the M3.0
metric screws is 4 mm. Use of longer length screws
may damage the drive.
8. Connect an available power cable to the power
connector on the drive. The recommended power
mating connector requires an AMP 1-48024-0
housing with AMP 60617-1 pins or equivalent.
Note: Turn off all power before inserting connectors.
9. Connect the mating SCSI connector (the single-
ended connector described previously in Cabling
and Connectors) with the SCSI connector on the

Internal SCSI Minicartridge Drives
Installation Manual Page 11
rear of the unit. When you make the connection, be
sure pin 1 of the connector aligns with pin 1 on the
SCSI connector.
Note: Pin 1 on the SCSI connector is to your right as
you look at the back of the drive. (See Figure 3.)
Your SCSI cable should have Pin 1 highlighted by a
color strip. Be sure to mate Pin 1 on the cable to Pin
1 on the drive. Failure to do so could make the drive
inoperative.
10. Replace the computer cover and reconnect any
peripherals that you disconnected during the
installation.
11. Plug the computer and any peripherals into an AC
power outlet.
Using the Drive
The drive is simple to operate. The following information
briefly explains drive operation.
Front Panel LED Operation
The front panel of the Travan drive contains the cartridge
opening and one round, green light emitting diode (LED).
This LED is lit when the tape is NOT at the beginning of
the tape. Thus, the LED shows tape movement when lit.
Figure 7 shows the front panel of the drive.

Internal SCSI Minicartridge Drive
Page 12 Installation Manual
Figure 7
Front Panel
DRIVE ACTIVE
(GREEN)
Software
The drive requires one of the following operating
environments: DOSTM version 5.0 or later, Microsoft
WindowsTM 3.1 or later, OS/2, Novell, Microsoft NTTM,
Microsoft Windows '95TM, or SCO UNIX/XENIXTM
System V, version 3.2 or later. The drive operates with
many of the popular backup software applications such as,
Seagate's Backup Exec for DOS and Windows,
Window 95, Netware, Windows NT.
Loading and Unloading Cartridges
Your tape drive has a flip-up door that covers the cartridge
opening when a tape cartridge is not installed in the drive.
Once a cartridge is inserted, it is held firmly in place by the
drive's positive locking mechanism.
!Caution: DO NOT remove a tape cartridge
while the drive is active. Complete any tape
operations and wait until the green LED is OFF
before removing the cartridge.
To load a cartridge, insert it with the metal base plate down
and the tape access door facing into the drive. Figure 8
illustrates the loading of a cartridge.

Internal SCSI Minicartridge Drives
Installation Manual Page 13
Figure 8
Loading a Travan Cartridge
To unload a cartridge, wait until the drive activity LED is
OFF and then pull the cartridge straight out. Figure 9
illustrates the unloading of a cartridge.
Figure 9
Unloading a Travan Cartridge

Internal SCSI Minicartridge Drive
Page 14 Installation Manual
Recommended Tapes
The drive operates with the tapes listed in the following table.
Description Seagate Sony 3M
Travan (750 ft)
•• 4.0 GB capacity
•• 8.0 GB capacity with
data compression
8000TR4 N/A TR-4
QIC Wide 900 Oe(400 ft)
•• 2 GB capacity
•• 4 GB capacity with
data compression
— QW 3095XLF —
Standard 900 Oe (400 ft)
•• 1.6 GB capacity
•• 3.2 GB capacity with
data compression
— — miniMAGNUSTM
3080
QIC Wide 900 Oe(400 ft)
•• 2 GB capacity
•• 4 GB capacity with
data compression
4000QT QW 3080XLF —
Setting the Write–Protect Switch
Travan minicartridges feature a write-protect switch located
in the upper left corner of the cartridge. You can set the
switch to keep data from being written on the tape. Use this
switch when you want to make sure that important data on
the tape will not be overwritten.
Figure 10 shows the switch in the nonprotected (read/write)
or unlocked position.
Figure 10
Travan Cartridge Read/Write Switch Position

Internal SCSI Minicartridge Drives
Installation Manual Page 15
Figure 11 shows the switch in the protected (read only) or
locked position.
Figure 11
Tape Cartridge Read-Only Switch Position
To return a cartridge to the "writable" state, push the switch
toward the end of the cartridge or to the unlocked position..
Caring for Cartridges
Although minicartridges are ruggedly built, they must be
handled with care to preserve the data that they contain.
The following points are guidelines for storing and using
minicartridges.
λDo not open the tape access door of the cartridge or
touch the tape itself. One fingerprint can prevent
the drive from reading the tape.
λKeep the cartridge away from sources of
electromagnetic fields, such as telephones, dictation
equipment, mechanical or printing calculators,
motors, and bulk erasers. Do not lay cartridges on
the computer monitor or on the base unit of the
computer.
λKeep the cartridge away from direct sunlight and
heat sources, such as radiators or warm air ducts.
λKeep the cartridge free of moisture. Do not wet or
submerge a cartridge in any liquid.

Internal SCSI Minicartridge Drive
Page 16 Installation Manual
λDo not expose the cartridge to temperature
extremes. Allow the cartridge to assume room
temperature slowly.
λRetention tape cartridges that have not been used for
more than a month before restoring or backing up
data. This retentioning removes unwanted tight
spots that develop naturally on reeled media.
Cleaning the Tape Drive Head and Capstan
NEVER TOUCH THE READ/WRITE HEAD OF THE
DRIVE WITH ANYTHING OTHER THAN A WET
COTTON SWAB OR AN APPROVED CLEANING
CARTRIDGE.
To properly maintain the tape drive, you should
periodically clean the read/write head. No other periodic
maintenance is required.
Follow these guidelines to help ensure that your drive
provides long, reliable service:
λOperate the drive in a clean, dust-free environment.
λNever apply a lubricant to the drive.
λClean the tape drive head every month or after each
8 hours of continuous read/write operations.
For new cartridges, clean the head after two hours of
tape movement by one of two methods: using an
approved cleaning cartridge or manually as described
in the following steps.
The only cleaning cartridge tested and approved by
Seagate for use with the SCSI Travan Minicartridge drive
is the 3M cleaning cartridge DC051111 (Seagate Part
Number 10001794-001). Follow the instructions included
with the cleaning kit.

Internal SCSI Minicartridge Drives
Installation Manual Page 17
To manually to clean the drive head and capstan, follow
these steps:
1. Moisten a clean, lint-free swab in 90% isopropyl
alcohol so that it is wet but not dripping. (Never use
a dry swab.)
2. Hold the drive access door open and wipe the head
gently using a side-to-side motion. The upright
rectangle with the stripe in Figure 12 is the head.
Figure 12
The Drive Head
HEAD
3. Use a new swab saturated with 90% isopropyl
alcohol to wipe the capstan. the capstan is the flat,
roller to the left of the head as shown in Figure 12.
Rotate the capstan until its entire surface is clean.
4. Allow the drive to dry for 3 minutes before using.

Internal SCSI Minicartridge Drive
Page 18 Installation Manual
Troubleshooting
If a power interruption occurs during a backup or restore
operation, start over when the power is restored. If the
drive appears to fail during a backup or restore operation,
try the following steps:
1. Remove and replace the cartridge and try again.
Make sure you are using the correct type of tape
cartridge.
2. Turn off all power to the computer and drive. Wait
for the computer to power down and then start over.
3. Try a different tapepreferably one that has never
been used.
4. Check all cable connections for proper contact.
5. Clean the tape drive head as previously instructed.
Then try the operation again.
If problems persist, contact your tape drive supplier or
Seagate technical support at
[phone] US and Canada
44-1628-477080 Outside US and Canada
Be sure that you have the documentation for your
computer and all installed devices before you call technical
support.
Also contact us at
Seagate web site: http://www.seagate.com
Seagate BBs: [phone]