Digital Equipment TLZ07 User manual

TLZ07 Cassette Tape Drive and
Autoloader
Owner’sManual
Order Number: EK-TLZ07-OM. B01
Digital Equipment Corporation

October 1995
Digital Equipment 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.
© Digital Equipment Corporation 1994,1995. All Rights Reserved.
Printed in the U.S.A.
FCC NOTICE: The equipment described in this manual has been certified to comply with
the limits for a Class B computing device, pursuant to Subpart J of Part 15 of FCC Rules.
Only peripherals (computer input/output devices, terminals, printers, et cetera) certified to
comply with the Class B limits may be attached to this computer. Operation with noncertified
peripherals may result in interference to radio and television reception. This equipment
generates and uses radio frequency energy and if not installed and used properly, that is, in
strict accordance with the manufacturer’s instructions, may cause interference to radio and
television reception. It has been type tested and found to comply with the limits for a Class B
computing device in accordance with the specifications in Subpart J of 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 this equipment does cause interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient the receiving antenna.
• Move the computer away from the receiver.
• Plug the computer into a different outlet so computer and receiver are on different branch
circuits.
If necessary, the user should consult the dealer or an experienced radio/television technician
for additional suggestions. The user may find the following booklet prepared by the Federal
Communications Commission helpful: How to Identify and Resolve Radio-TV Interference
Problems. This booklet is available from the US Government Printing Office, Washington, DC
20402, Stock No. 004-000-00398-5.
The following are trademarks of Digital Equipment Corporation: DECdirect, DECmailer,
DECservice, DECstation, Q–bus, SERVICenter, StorageWorks, ULTRIX, VAXstation, VMS, and
the DIGITAL logo. (S3049)

Für Bundesrepublik Deutschland
For Federal Republic of Germany
Pour la République féderal d’Allemagne
BESCHEINIGUNG DES HERSTELLERS/IMPORTEURS
Dieses Gerät ist in Übereinstimmung mit den Bestimmungen der BMPT Vfg.243/1991 und
Vfg.46/1992 in Verbindung mit EN55022:1987 (DIN VDE 0878-3:11.89), oder Vfg.1046/1984
mit Vfg. 483/1986, funkentstört. Es trägt als Nachweis der EMV-Konformität entweder eine
Konformitätskennzeichnung oder das VDE-Funkschutzzeichen.
Der vorschriftsmäßige Betrieb mancher Geräte (z.B. Meßsender) kann allerdings gewissen
Einschränkungen unterliegen. Beachten Sie deshalb die unten aufgeführten Hinweise.
Für Geräte die nicht mit dem VDE-Funkschutzzeichen versehen sind wurde dem Bundesamt für
Zulassungen in der Telekommunikation (BZT) das Inverkehrbringen dieses Gerätes angezeigt
und die Berechtigung zur Überprüfung der Serie auf Einhaltung der Bestimmungen eingeräumt.
Betreiberhinweis
Wir sind verpflichtet, Sie auf folgende Fakten hinzuweisen (BMPT-Amtsblattverfügung 243/91
bzw. 1046/84 §2, Abschnitt 5):
Dieses Gerät wurde funktechnisch sorgfältig entstört und geprüft. Wird dieses Gerät innerhalb
einer Anlage zusammen mit anderen Geräten betrieben, muß bei Inanspruchnahme der
"Allgemeinen Betriebsgenehmigung" nach BMPT-AmtsblVfg. 243/91 bzw. 1046/84 die gesamte
Anlage den unter §2, Abschnitt 1, genannten Voraussetzungen entsprechen.
Externe Datenkabel
Sollte ein Austausch der von Digital spezifierten Datenkabel nötig werden, muß der Betreiber
für eine einwandfreie Funkentstörung sicherstellen, daß Austauschkabel im Aufbau und
Abschirmqualität dem Digital Originalkabel entsprechen.

Contents
1 TLZ07 Cassette Tape Drive Product Description
1.1 Overview ........................................... 1–1
1.1.1 System Support ................................... 1–2
1.2 Design Features . . . ................................... 1–2
1.2.1 What is Digital Audio Tape (DAT?) . ................... 1–2
1.2.2 What is Digital Data Storage (DDS?) ................... 1–2
1.2.3 What is the Media Recognition System (MRS)? . .......... 1–3
1.3 TLZ07/7L Models . . ................................... 1–3
1.3.1 Checking Your Shipment for Model TLZ07-DA . .......... 1–8
1.3.2 Checking your Shipment for Model TLZ7L-DA . .......... 1–8
1.3.3 Ordering Additional Cassettes ........................ 1–8
2 Installing the Tabletop Drives/Loaders (TLZ07/TLZ7L)
2.1 General . ........................................... 2–1
2.2 Shut Down, Halt, and Power Off the System ................ 2–1
2.3 Selecting the SCSI Address . . ........................... 2–2
2.4 Connecting a SCSI Signal Cable — Drive to System .......... 2–3
2.5 Adding Another Tabletop Drive — Drive to Drive . . .......... 2–4
2.6 Connecting the Power Cable . ........................... 2–4
3 Installing the TLZ07-AA/BA Cassette Tape Drive
3.1 General . ........................................... 3–1
3.2 Shut Down, Halt, and Power Off the System ................ 3–1
3.3 Selecting the SCSI Address for the TLZ07-AA/BA Drive ....... 3–2
3.3.1 Other Optional Switch Settings ....................... 3–5
3.3.2 Revised Version TLZ07-AA/-BA Tape Drive SCSI Jumper
Settings ......................................... 3–5
3.4 Connecting a SCSI Signal Cable — Drive to System .......... 3–6
3.5 Connecting the Power Cable and Mounting ................. 3–7
v

4 Verifying TLZ07 Cassette Tape Drive Installation
4.1 General ............................................ 4–1
4.1.1 Execute POST .................................... 4–1
5 Using the TLZ07 Cassette Tape Drive
5.1 General ............................................ 5–1
5.2 Power Switch ........................................ 5–1
5.3 Unload Button ....................................... 5–1
5.4 Write-Protect LED .................................... 5–1
5.5 Tape/Activity LED .................................... 5–1
5.6 Indicators . . . ........................................ 5–2
5.7 Using the Cassette Tape ............................... 5–4
5.7.1 Proper Handling of Cassette Tapes .................... 5–4
5.7.2 Setting the Write-Protect Tab on the Cassette Tape. ....... 5–5
5.7.3 Inserting a Cassette Tape into the Drive ................ 5–6
6 Preventive Maintenance and Problem Solving
6.1 Cleaning the Heads . . . ................................ 6–1
6.2 Problem Solving ...................................... 6–3
6.2.1 System-Based Diagnostics . . . ........................ 6–4
6.3 Repair Services ...................................... 6–4
6.3.1 On-Site Service . . . ................................ 6–4
6.3.2 BASIC Service .................................... 6–4
6.3.3 DECservice ...................................... 6–5
6.3.4 Carry-In Service . . . ................................ 6–5
6.3.5 DECmailer Service . ................................ 6–5
6.3.6 Per Call Service . . . ................................ 6–5
7 Using the TLZ7L autoloader
7.1 Overview . . . ........................................ 7–1
7.2 Indicators . . . ........................................ 7–1
7.3 Dot Matrix Display . . . ................................ 7–5
7.3.1 Activity Messages . ................................ 7–5
7.3.2 Status Messages. . . ................................ 7–5
7.3.3 Error Messages . . . ................................ 7–5
7.4 Operation . . . ........................................ 7–8
7.4.1 Automatic Operations .............................. 7–8
7.4.2 Manual Operations ................................ 7–9
7.4.3 Single Cassette Operation . . . ........................ 7–9
vi

7.5 Switch Settings and Jumpers. ........................... 7–10
7.5.1 Switchpack 1 . . ................................... 7–10
7.5.2 Switchpack 2 . . ................................... 7–11
7.5.3 SCSI ID Select Switch (-DA Version Only) ............... 7–12
7.5.4 SCSI ID Select Switch (-AA Version Only) Switchpack 3 . . . . 7–12
7.5.5 Other Switch Settings . . . ........................... 7–13
7.5.6 Termination Jumper/Terminators. . . ................... 7–14
7.6 Routine Maintenance .................................. 7–15
7.6.1 Cleaning the Rollers................................ 7–15
7.6.2 Cleaning the TLZ07 Tape Drive ....................... 7–15
A Cassette Tape Drive Specifications
B Enabling/Disabling Data Compression Under OSF and
OpenVMS
B.1 OSF TLZ07 Compression and Noncompression Modes ......... B–1
B.2 OSF DUMP Utility ................................... B–1
B.3 OpenVMS TLZ07 Compression and Noncompression Modes . . . . B–2
Index
Figures
1–1 Model TLZ07-DA (Tabletop - Original Version) . .......... 1–4
1–2 Revised Version TLZ07-DA Tabletop Tape Drive .......... 1–5
1–3 Model TLZ07-AA (3.5-inch Chassis) and TLZ07-BA (5.25-inch
Form Factor - Original Version) ....................... 1–6
1–4 Revised Version TLZ07-AA/-BA Tape Drive .............. 1–7
3–1 SCSI Address Switches . . ........................... 3–4
3–2 Revised Version TLZ07-AA/-BA Tape Drive SCSI Jumper
Settings ......................................... 3–6
5–1 TLZ07 Cassette Tape ............................... 5–5
7–1 Model TLZ7L-AA, Front View ........................ 7–2
7–2 Model TLZ7L-AA, Top View .......................... 7–2
7–3 Model TLZ7L-DA, Front View ........................ 7–3
7–4 Model TLZ7L-DA, Back View ......................... 7–4
7–5 SCSI Address Switches . . ........................... 7–14
vii

Tables
3–1 SCSI ID Switch Settings (0=Off, 1=On) . ................ 3–3
5–1 TLZ07 LED Status . ................................ 5–3
6–1 Problem Solving . . . ................................ 6–3
7–1 Loader Error Codes ................................ 7–6
7–2 Status Messages. . . ................................ 7–7
7–3 SW1 Settings and Functions . ........................ 7–10
7–4 SW1-1 and SW1-2 Settings . . ........................ 7–10
7–5 SW2 Settings and Functions . ........................ 7–11
7–6 SCSI ID Select Switch .............................. 7–12
7–7 SCSI ID Switch Settings on Switchpack 3 (0=Off, 1=On) .... 7–12
A–1 TLZ07 Cassette Tape Drive Specifications ............... A–1
A–2 TLZ07 Cassette Tape Drive Dimensions ................ A–2
A–3 TLZ07-DA Noise Declaration . ........................ A–3
A–4 TLZ7L Cassette Tape Drive Specifications ............... A–4
A–5 TLZ7L Cassette Tape Drive Dimensions ................ A–5
A–6 TLZ7L-DA Noise Declaration . ........................ A–5
viii

1
TLZ07 Cassette Tape Drive Product
Description
1.1 Overview
The TLZ07 Digital Audio Tape (DAT) drive provides you with high capacity,
off-line data storage. Depending on the 4 mm data cassette tape used, the unit
can typically store:
Tape Type (NOTES 1 and 2) No Compression Compression
TLZ04-CA (60 m, DDS-1) 1.3 GB 2.6 GB (see Note 3.)
TLZ06-CA (90 m, DDS-1) 2.0 GB 4.0 GB (see Note 3.)
TLZ07-CA (120 m, DDS-2) 4.0 GB 8.0 GB (see Note 3.)
NOTE
1. The TLZ07 is compatible with 60 m cassette tapes written on the
TLZ04 in the noncompressed mode only.
2. The TLZ07/7L is compatible with the TLZ06/6L using 60 m and 90
m tapes only.
3. The compression measurements are typical for a 2-to-1 data
compression ratio, but the actual ratio is dependent on the data.
The maximum time to back Up (read or write) on a TLZ07 cassette tape
in a continual (streaming) mode is system dependent. The efficient use of
streaming mode is determined by your operating system. Please refer to your
system software documentation.
TLZ07 Cassette Tape Drive Product Description 1–1

1.1.1 System Support
As of this printing, the TLZ07 drive is supported by a variety of Digital
systems. Consult your Digital Sales Support representative for a list of
supported systems. Your particular system must have a standard SCSI (small
computer system interconnect) port, a KZQSA (Q–bus to SCSI adapter), or
HSD05 (DSSI bus to SCSI adapter).
1.2 Design Features
The TLZ07 cassette tape drive uses state of the art technology. The TLZ07
cassette tape drive’s design incorporates the Digital Data Storage (DDS)
recording format and Digital Audio Tape (DAT) recording technologies.
1.2.1 What is Digital Audio Tape (DAT?)
DAT technology provides a high recording density with a very low error rate
through the helical scan recording method. With this method of recording,
both the tape and the recording head move simultaneously. The read and write
heads are located on a rapidly rotating cylinder, or drum that is tilted at an
angle in relation to the vertical axis of the tape. This causes the tracks to be
recorded diagonally across the tape, resulting in an extremely high recording
density, far higher than what is achievable with stationary-head devices.
1.2.2 What is Digital Data Storage (DDS?)
DDS uses a recording format that supports the use of digital audio tape
for computer applications. The objectives of DDS are to maximize storage
capacity and performance, facilitate data interchange, and provide very fast
random access. In addition, this format has three levels of error correction,
which ensures high data integrity. The DDS-DC format, which is a superset
of the basic DDS DAT format, allows you to back up 8 gigabytes of data in
approximately 3 hours minimum with no operator intervention, assuming 2:1
compression ratio.
NOTE
Use of non-DDS media may result in degraded drive performance and
is not recommended by Digital Equipment Corporation.
1–2 TLZ07 Cassette Tape Drive Product Description

1.2.3 What is the Media Recognition System (MRS)?
MRS refers to a series of alternate opaque and clear stripes at the beginning
of a tape. This striping is used to classify the media as data grade rather than
audio grade media. Use of MRS helps to ensure that only data grade tapes are
used in computer applications. All 120-meter cartridges support MRS. Shorter
media are available in both MRS and non-MRS tpes.
1.3 TLZ07/7L Models
The TLZ07 drive is available in several configurations:
• Model TLZ07-DA (tabletop) — a compact external unit with a built-in
power supply and fan (Figure 1–1 and Figure 1–2).
• Model TLZ07-AA — a 3 1/2-inch, half-height drive that mounts internally
(Figure 1–3 and Figure 1–4).
• Model TLZ07-BA — a 3 1/2-inch drive in a 5 1/4-inch, half-height form
factor allowing the drive to be mounted internally (Figure 1–3 and
Figure 1–4).
• Model TLZ07-VA — a TLZ07-AA mounted in a 3 1/2-inch StorageWorks
SBB.
• Model TLZ7L-AA — a 5 1/4-inch, full-height autoloader that mounts
internally (Figure 7–1).
• Model TLZ7L-DA (tabletop) — an external unit with a built-in power
supply and fan (Figure 7–3).
• Model TLZ7L-VA — a TLZ7L-AA mounted in a 5 1/4-inch StorageWorks
SBB.
NOTE
All the models have a drive buffer size of 1 MB of memory.
TLZ07 Cassette Tape Drive Product Description 1–3

Figure 1–1 Model TLZ07-DA (Tabletop - Original Version)
Indicator
PowerOn
Indicator
Indicator
+
SCSIConnectors
On/OffSwitch SCSIIDSwitch
PowerConnector
TapeUnload
Button
WriteProtect
Tape/Activity
FrontView
RearView
-
5
0
1–4 TLZ07 Cassette Tape Drive Product Description

Figure 1–2 Revised Version TLZ07-DA Tabletop Tape Drive
Front View
Rear View
Tape
Unload
Button
SCSI
Connectors
SCSI ID
Switch
Power
Connector
Write Protect
Indicator
Tape/Activity
Indicator
Power On
Indicator
On/Off
Switch
5
MA00456
TLZ07 Cassette Tape Drive Product Description 1–5

Note
Figure 1–3 shows 3.5-inch drive. Positions of the LEDs, switches, etc.,
apply to the 5.25-inch version also.
Figure 1–3 Model TLZ07-AA (3.5-inch Chassis) and TLZ07-BA (5.25-inch
Form Factor - Original Version)
SW1
RearView
50 2
JP4
U2
SW
321
PowerConnector SCSIIDand
SCSIConnector
TapeUnload
Button
TapeUnload
Button
TapeUnload
Button
TapeUnload
Button
TapeUnload
Button
TapeUnload
Button
WriteProtect
Tape/ActivityIndicator
FrontView
TerminatorResistor
PackSockets
(PlacePin1here)
RemoteIDPins
(refertotextfor
switchsettings)
OptionSwitch
TermPower
1–6 TLZ07 Cassette Tape Drive Product Description

Figure 1–4 Revised Version TLZ07-AA/-BA Tape Drive
SCSI
Address
Switch
Power
Connector
Jumper
Block
Tape
Unload
Button
Write
Protect
Tape/
Activity
SCSI
Connector
Front View
Rear View
Bottom View
MA00457
Indicator
Indicator
TLZ07 Cassette Tape Drive Product Description 1–7

1.3.1 Checking Your Shipment for Model TLZ07-DA
In addition to this manual, make sure that your shipment includes the
following:
• One TLZ07-DA tabletop cassette tape drive
• One 50-pin to 50-pin SCSI signal cable (PN 17-01351-01) for drive to drive
connections only
• AC power cable
• One blank cassette tape (4 mm x 120 m), (PN TLZ07-CA)
• One head cleaning cassette (PN TLZ04-HA)
• SCSI terminator (PN 12-30552-01)
If your shipment is incomplete, please contact your Digital sales representative.
1.3.2 Checking your Shipment for Model TLZ7L-DA
In addition to this manual, make sure that your shipment includes the
following:
• One TLZ7L-DA tabletop autoloader
• One 50-pin to 50-pin SCSI signal cable (PN 17-01351-01) for drive to drive
connections only.
• AC power cable
• Five pack of blank cassette tapes (4 mm x 120 m), (PN TLZ07-CB)
• One head cleaning cassette tape (PN TLZ04-HA)
• SCSI terminator (PN 12-30552-01)
• Four-slot tape cassette magazine (PN TLZ06-04)
1.3.3 Ordering Additional Cassettes
To order additional blank cassette tapes and head cleaning cassettes, contact
your Digital sales representative or DECdirect. Refer to the following part
numbers.
• Five blank cassette tapes (4 mm x 60 m) (PN TLZ04-CB)
• Five blank cassette tapes (4 mm x 90m) (PN TLZ06-CB)
• Five blank cassette tapes (4 mm x 120m) (PN TLZ07-CB)
• One head cleaning cassette (PN TLZ04-HA)
1–8 TLZ07 Cassette Tape Drive Product Description

2
Installing the Tabletop Drives/Loaders
(TLZ07/TLZ7L)
2.1 General
This chapter shows you how to install the TLZ07-DA tabletop cassette tape
drive or TLZ7L-DA tabletop autoloader on systems with an external SCSI
connector. Read the following sections to complete the installation.
2.2 Shut Down, Halt, and Power Off the System
If you are installing a TLZ07-DA tabletop cassette tape drive or TLZ7L-DA
tabletop autoloader on a running system, have your system manager perform
the following steps:
1. Shut down the operating system.
2. Halt the system.
3. Set all system power switches off.
Installing the Tabletop Drives/Loaders (TLZ07/TLZ7L) 2–1

2.3 Selecting the SCSI Address
To familiarize yourself with the TLZ07 drive and TLZ7L loader:
1. Refer to Figure 1–1 and Figure 1–2 for the location of the buttons, switches,
and connectors on the tabletop drives and Figure 7–3 and Figure 7–4 for
the tabletop loaders.
2. Note that all connections are made at the rear of the tabletop enclosure.
Your system uses a SCSI ID switch to identify, or address, the drive. The SCSI
ID is factory set at 0. If you are installing the drive on a system that is already
using SCSI ID 0, use any available SCSI ID. (You may have to consult your
system manager.)
To set/change the SCSI address:
1. Locate the SCSI address switch at the rear of the tabletop enclosure.
2. Select the SCSI address for the drive:
• TLZ07-DA — Press the + or - button until the desired address (0
through 7) appears in the window. See Figure 1–1.
• TLZ7L-DA — Set the switches according to Table 7–6 and Figure 7–4.
NOTE
If you are installing any other drive variant, refer to Chapter 3.
Turn off all power before connecting the cables and the terminator.
The drive must be turned off and then on for switch settings to take
effect, or a SCSI bus reset must be received.
2–2 Installing the Tabletop Drives/Loaders (TLZ07/TLZ7L)

The tabletop drives provide two SCSI connectors to allow daisy chaining.
Either connector can connect to the host computer or any SCSI device in a
daisy chain.
• If the tabletop is the last drive in the chain an interface cable is attached
to one connector and a SCSI terminator (PN 12-30552-01) is installed in
the other connector.
• If the drive is within the chain, the interface cable from the preceding
device is connected in one connector; an interface cable is also connected
from the other connector to the following device.
NOTE
Make sure that the last SCSI device on the bus is terminated correctly.
2.4 Connecting a SCSI Signal Cable — Drive to System
If you are connecting a TLZ07-DA drive or TLZ7L-DA autoloader
directly to your system, you should use the SCSI signal cable supplied
as part of your system installation kit.
If you do not have this cable, contact your Digital sales representative. You
should use a cable supplied by Digital Equipment Corporation. Failure to do
so can result in degraded performance of your tabletop drive.
To connect a SCSI cable — drive to system — perform the following:
1. Connect one end of the cable to the system SCSI connector.
2. Connect the other end of the SCSI signal cable to either SCSI connector on
the rear of the TLZ07-DA drive or TLZ7L-DA autoloader.
3. Secure the SCSI cable by snapping the wire cable clamps (on either side of
the SCSI connector) into place.
4. Connect the SCSI terminator to the other SCSI connector on the rear of
the TLZ07-DA drive or TLZ7L-DA autoloader.
5. Secure the terminator by snapping the wire cable clamps (on either side of
the SCSI connector) into place.
Installing the Tabletop Drives/Loaders (TLZ07/TLZ7L) 2–3

2.5 Adding Another Tabletop Drive — Drive to Drive
If you have one SCSI tabletop device already connected to your system, you
can connect the TLZ07-DA drive or TLZ7L-DA autoloader to that device. For
drive to drive connections, use the 50-pin to 50-pin SCSI signal cable (PN
17-01351-01) supplied with the tabletop drive.
Care should be taken to ensure that total SCSI cable length is well within the
SCSI specification limit of 6 meters (including cable length within the system
enclosure). It is also important to ensure that the drive/loader is configured to
supply terminator power to the bus (default configuration). See Chapter 3 and
Chapter 7 for jumper/switch configurations.
1. If present, remove the SCSI terminator from the existing SCSI drive.
2. Connect one end of the SCSI signal cable (PN 17-01351-01) to the existing
SCSI drive, observing the correct orientation of the cable connector.
3. Secure the SCSI cable by snapping the wire cable clamps (on either side of
the SCSI connector) into place.
4. Connect the other end of the SCSI signal cable to either SCSI connector
on the TLZ07-DA drive or TLZ7L-DA autoloader, observing the correct
orientation of the cable connector.
5. Secure the SCSI cable by snapping the wire cable clamps (on either side of
the SCSI connector) into place.
6. Connect the SCSI terminator to the other SCSI connector on the TLZ07-DA
drive or TLZ7L-DA autoloader, observing the correct orientation of the
cable connector.
2.6 Connecting the Power Cable
The tabletop drives have an autoranging power supply. Refer to Table A–1 for
voltage specifications.
To connect the power cable, proceed as follows:
1. Be sure that the TLZ07-DA drive or TLZ7L-DA autoloader power switch is
off (0).
2. Connect the power cable to the TLZ07-DA drive or TLZ7L-DA autoloader
power connector.
2–4 Installing the Tabletop Drives/Loaders (TLZ07/TLZ7L)