HP 705 Workstation User manual

HP DDS-2 T ape Drive
User’s Guide

Workstation Systems Group
Order No. A1658–90701
Edition E1296
Printed in U.S.A.

Hewlett-Packard Co. 1996
First Printing: December 1996
UNIX
is a registered trademark in the United States and other countries, licensed exclusively through
X/Open Company Limited.
NOTICE
The information contained in this document is subject to change without notice.
HEWLETT–PACKARD MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS
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not
be liable for errors contained herein or for incidental or consequential damages in connection with
the furnishing, performance or use of this material.
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assumes no responsibility for the use or reliability of its software on equipment that is
not furnished by Hewlett-Packard.
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Clause at DFARS 252.227.7013. Hewlett-Packard Co., 3000 Hanover St., Palo Alto, CA 94304.
10 9 8 7 6 5 4 3 2 1

iii
Contents
Preface
Audience vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety and Regulatory Statements vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Notice viii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Manuals viii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Revision History ix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Questions and Problems ix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Documentation Conventions x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1 Introduction
General Description 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Major Features of DDS Drives 1–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DDS-DC Drive 1–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DDS-2 Drive 1–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DDS-2 Drive Environmental Requirements 1–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DDS-2 Drive Physical Specifications 1–5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparing to Install the DDS-2 Drive 1–6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ools Required 1–6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Verifying Kit Contents 1–6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating System Support 1–6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the SCSI-2 Address 1–7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Address Jumpers 1–8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparing the System 1–11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCSI-2 Connection and Termination 1–13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Powering Off the Workstation and any Peripherals 1–14 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding or Removing the DDS-2 Drive Bezels or Expansion Brackets 1–15 . . . . . . . . . . . .

Contents
iv
Chapter 2 Using Your DDS Drive
Your DDS-2 Drive Configuration 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls and Features of the DDS-2 Drive 2–2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LEDs 2–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Cassettes 2–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Media Life 2–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning the T ape Heads 2–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Media Restrictions 2–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Write-Protect T ab on a Data Cassette 2–4 . . . . . . . . . . . . . . . . . . . . . . .
Using the DDS-2 Drive 2–6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading and Unloading a Data Cassette 2–6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Verifying the DDS-2 Tape Drive Operation 2–7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Media Interchangeability Restrictions 2–8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering Information 2–9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 3 Troubleshooting and Removal/Replacement Procedures
Troubleshooting 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the Address Settings for Single-Ended Drives 3–2 . . . . . . . . . . . . . . . . . . . .
Checking the Hardware Installation 3–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rechecking the Address Settings 3–5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Verifying the System Operation using SupportWave 3–6 . . . . . . . . . . . . . . . . . . . . . . . .
Removal/Replacement Procedures 3–9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Replaceable Units 3–9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Powering Off the System 3–9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the DDS-2 Drive 3–10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding or Removing the DDS-2 Drive Bezels and Expansion Brackets 3–10 . . . . . . .
Appendix A SCSI Connector Pinnouts

Contents
v
Figures
1–1. HP DDS-2 Drive 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–2. HP DDS-2 Drive Physical Specifications 1–5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–3. Rear View of DDS-2 Drive and SCSI Address/Jumper Settings 1–9 . . . . . . . . . . . . . .
1–4. Switch Settings for Data Compression Operation Mode 1–10 . . . . . . . . . . . . . . . . . . .
1–5. Adding a Bezel to the DDS-2 Drive 1–16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–6. Removing a Bezel from the DDS-2 Drive 1–16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–7. Adding or Removing Expansion Brackets 1–16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–1. DDS-2 Drive Controls and Indicators 2–2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2. Setting the Write-Protect Tab on a DDS Tape 2–5 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3. Loading a Data Cassette 2–6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1. Adding a Bezel to the DDS-2 Drive 3–11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2. Removing a Bezel from the DDS-2 Drive 3–11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3. Adding or Removing Expansion Brackets 3–12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table
2–1. LED Display Codes 2–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vii
Preface
The HP DDS-2 T ape Drive User ’ s Guide describes how to install, configure, and use the
HP DDS-2 tape drive.
We’ve organized this guide as follows:
Chapter 1 Provides a general description of the drive and the procedures for
installing it into a system.
Chapter 2 Describes the drive configurations, the controls and features of the drive,
and provides directions for using it.
Chapter 3 Provides information on caring for DDS tapes, troubleshooting
information, and removal/replacement procedures for the drives.
Appendix A Lists the pinnouts for the SCSI connector on the drive.
Audience
This guide is intended for use by anyone familiar with the the HP workstations who
wants to install and configure the DDS drive.

Preface
viii
Safety and Regulatory Statements
See the Owner’s Guide that came with your system for safety informtion.
Federal Communications Commission (FCC)
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules and the Canadian Department of
Communications. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instructions may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation.
Hewlett-Packard’s system certification tests were conducted with HP-supported
peripheral devices and HP shielded cables, such as those you receive with your computer.
Changes or modifications not expressly approved by Hewlett-Packard could void the
user’s authority to operate the equipment.
Operation of this device is subject to the following conditions:
•This device may not cause harmful interference.
•This device must accept interference received, including interference that may cause
undesired operation.
•Cables used with this device must be properly shielded to comply with the
requirements of the FCC.
Canadian Department of Communications (CDC)
This digital apparatus does not exceed the Class A limits for radio noise emissions from
digital apparatus as set out in the Radio Interference Requirements of the Canadian
Department of Communications.

Preface
ix
Emissions Regulations Compliance
Any third-party I/O device installed in HP system(s) must be in accordance with the
requirements set forth in the preceding Emissions Regulations statements. In the event
that a third-party noncompliant I/O device is installed, the customer assumes all
responsibility and liability arising therefrom.
Electrostatic Discharge (ESD) Precautions
Electrostatic charges can damage the integrated circuits on printed circuit boards. To
prevent such damage from occurring, observe the following precautions during board
unpacking and installation:
•Stand on a static-free mat.
•Wear a static strap to ensure that any accumulated electrostatic char ge is
discharged from your body to ground.
•Connect all equipment together, including the static-free mat, static strap, routing
nodes, and peripheral units.
•Keep uninstalled printed circuit boards in their protective antistatic bags.
•Handle printed circuit boards by their edges, once you have removed them from their
protective antistatic bags.

Preface
x
Installation Notice
Products designated in the applicable Hewlett-Packard price list as customer-installable
can be installed by computer-knowledgeable customers who carefully read and follow the
instructions provided. Customers who elect to have the product installed by our field
personnel are charged the applicable field installation charge, as covered under the
standard terms and conditions. For more information, please contact your local sales
representative.
Related Manuals
For more information, refer to the following documents:
•The Owner’s Guide that came with your system
•HP-UX Installing Peripherals: HP 9000 Series 700 (B2355–90006)
•Using Your HP Workstation (A2615–90003)
•HP V isual User Envir onment User ’s Guide (B1171–90061)
•System Administration T asks HP 9000 Series 700 Computers (B2355–90040)
•Using HP-UX (B2910–90001)
Documents specific to HP DDS drives:
•User’s Manual, Vol 1 of HP DDS T echnical Manual (C1534–9091 1)
•Integration Guide, Vol 2 of HP DDS Technical Manual (C1534–90912)
•The SCSI Interface, Vol 3 of HP DDS Technical Manual (C1534–90913)
•Background to DDS Pr oducts , V ol 4 of HP DDS T echnical Manual (C1534–90914)
•HP DDS Configuration Guide , V ol 5 of HP DDS T echnical Manual (C1534–90915)
Contact your HP supplier for copies.

Preface
xi
Questions, Suggestions, and Problems
If you have any questions, suggestions, or problems with our hardware, software, or
documentation, please call 1-888-301-5932 (toll free in U.S.A. and Canada), or contact
your HP Response Center for your country.
Documentation Conventions
Unless otherwise noted in the text, this guide uses the following symbolic conventions:
literal values Bold words or characters in formats and command descriptions
represent commands that you must use literally. Pathnames are
also in bold.
user-supplied Italic words or characters in formats and command descriptions
values represent values that you must supply. Italics are also used in
text for emphasis.
screen display Information that the system displays appears in this typeface.
Return A rectangle with rounded corners and a key label denotes a key on
your keyboard. (In this manual we refer to the Return key. On
your keyboard the key may be labeled either Return or Enter.)
This symbol indicates the end of a chapter or part of this guide.

1–1
Chapter 1
Introduction
This document describes the HP DDS-2 (HP model number C1539A) drive, its
installation, operation, troubleshooting, and removal/replacement procedures.
This chapter introduces the DDS-2 drive and contains the following information:
•General description of the drive
•Major features of the drive
•Preparing to install the drive
•Preparing the system
•Powering off the workstation and any peripherals.
•Adding or removing the DDS-2 drive bezels or expansion brackets

Introduction
1–2
General Description
The HP DDS-format drives have been developed by Hewlett Packard for data storage
drives that build on DAT technology. The DDS-2 drive has 4-GB native capacity,
yielding up to 8 GB of stored data and has data compression functionality. Figure 1–1
shows the DDS-2 drive.
Figure 1–1. HP DDS-2 Drive

Introduction
1–3
Major Features of DDS Drives
The DDS-1 format incorporates error correction techniques used in audio DAT drives
with additional techniques specifically designed to provide the integrity of data necessary
for computer use. These extra methods of error detection and correction are as follows:
•C3 ECC, a third level of Error Correction Code providing correction across frames
within groups.
•Read-After-Write, where data is verified immediately after it is written and re-
written if there is any error.
• Data Randomizer , for recording the data in order to provide a consistent signal
level. This enables read-after-write to be effective.
•Track Checksums, for detecting and locating helical errors, and so improving the
performance of C3 ECC.
DDS-DC Drive
The HP Model C1536A implements the DDS-DC format. This includes all of the features
of the DDS-1 format, plus an extension to include data compression as follows:
•Compressed data can be stored in a way that maintains the full functionality of
the DDS format and ensures backwards compatibility with existing DDS drives.
•Any DDS-1 and DDS-DC cartridge can be read, whether data compression is
switched on or off.
•Data is automatically decompressed on reading even if data compression is switched
off.
•Mixing compressed and uncompressed data is supported. This means that a car-
tridge can be written with uncompressed data and read in any DDS drive.

Introduction
1–4
DDS-2 Drive
The HP C1539A implements the DDS-2 format. This includes all of the features of the
DDS-1 and DDS-DC formats, plus the ability to read and write with much higher
capacity as follows:
•Reads and writes using DDS-1 and DDS-DC formats when using DDS-1 media
(60 m and 90 m). Has all of the features of the DDS-1 and DDS-DC formats.
•Reads and writes with much higher capacity when using DDS-2 media (120 m).
DDS-2 Drive Environmental Requirements
The DDS-2 drive has the following environmental requirements:
•Ambient Temperature
Operating 5_C to 40_C
(41_F to 104_F)
Non-Operating –40_C to 70_C
(–40_F to 158_F)
•Altitude
Operating 0 km to 4.6 km (0 to 15,000 ft)
Non-Operating 0 km to 15.2 km (0 to 50,000 ft)
•Humidity
Operating 20% to 80%RH (non-condensing)
Non-Operating 5% to 95%RH (non-condensing)
Maximum wet bulb temperature = 26_C

Introduction
1–5
DDS-2 Drive Physical Specifications
The following illustration describes the physical specifications of the DDS-2 drive.
150 mm +/– 0.3
+++
60 mm
90 mm
4 mm
21 mm
+/– 0.2 +/– 0.2
+/– 0.2
41.3 mm
+/– 0.6
5 mm
+/– 0.3
101.6 mm +/– 0.3
41.3 mm
+/– 0.3
101.6 mm
+/– 0.3
++
++
94 mm
+/– 0.2
3.8 mm
+/– 0.3
30.9 mm
+/– 0.2
70 mm
+/– 0.2
Figure 1–2. HP DDS-2 Drive Physical Specifications

Introduction
1–6
Preparing to Install the DDS-2 Drive
The following information describes how to prepare the DDS-2 drive for installation.
Tools Required
The following tools are needed to install the DDS-2 drive:
•#2 Phillips screwdriver
•Small needle-nose pliers
•T10 torx wrench
Verifying Kit Contents
Verify that the kit contains one of each of the following:
•DDS-2 drive (manufacturing part number 0950–2658)
•Set of 4 screws (M4x6)
•Set of two expansion brackets and four screws (M3x6 T10) (not included in all kits)
•Power adapter cable
•SCSI I/O cable
•Static strap
•HP DDS-2 T ape Drive User ’ s Guide (A1658–90701)
NOTICE: If any contents of your kit are missing, contact your sales
representative.
Operating System Support
The HP DDS-2 drive supports HP-UX 9.05 and later. This drive requires the following
HP-UX patches (or their replacements): PHKL_7852 and PHSS_7587. Both patches are
for OS versions 9.x only and cannot be used on any 10.x OS versions.****

Introduction
1–7
Setting the SCSI-2 Address
The DDS-2 drive must have a unique SCSI-2 target address. The DDS-2 drive’ s jumpers
are set at the factory to the SCSI-2 default address of 3 as shown in Figure 1–3. You must
also ensure that the Operation Mode jumpers are set for correct drive operation, as shown
in Figure 1–4. We ship the drive with the Operation Mode jumpers set to operate
correctly with your system. We recommend that you keep the default address, if possible.
CAUTION: SCSI tape drives are susceptible to mechanical and electrostatic
shock. When handling a DDS-2 drive, always wear the static-
grounding wrist strap that comes in the DDS-2 drive kit, and al-
ways handle the drive carefully.
Electrostatic charges can damage drives. To prevent such damage
from occurring, observe the following precautions during unpack-
ing and installation:
DStand on a static-free mat.
DWear a static strap to ensure that any accumulated electrostatic
charge discharges from your body to ground.
DConnect all equipment together, including the static-free mat,
static strap, routing nodes, and peripheral units.
DKeep uninstalled DDS-2 drives in their protective antistatic
bags.
If you need to change the DDS-2 drive’s address or operation mode, follow these
instructions, referring to Figures 1–3 and 1–4.
1. Locate the jumpers at the back of the DDS-2 drive.
2. To change the jumper settings, use needlenose pliers to set the drive’s SCSI ID to an
address that is not used by another SCSI device. Check that the other jumpers are set
correctly.

Introduction
1–8
3. If you need to change the Operation Mode switches, locate the switches on the un-
derside of the DDS-2 tape drive. Switches 1 and 2 are used to configure the data
compression operation mode. Switches 3 through 8 are used to specify drive connec-
tivity and functionality according to host or customer requirements. The default set-
ting is all switches ON.
Address Jumpers
To set the drive’s address, use the SCSI-2 address jumpers, and perform the following
steps:
1. Attach the static-grounding wrist strap by following the instructions on the package
that contains the strap. Attach one end of the strap to the system chassis.
2. Locate the address jumpers on the rear of the DDS-2 drive. Figure 1–3 shows the
rear of the DDS-2 drive with the significant bits identified.
3. Set the drive’s SCSI-2 target address to an address that’s not used by another SCSI-2
device. Using Figure 1–3 as a guide, use needlenose pliers to set the jumpers. When
finished, refer to “Preparing the System,” later in this chapter for information on
verifying the jumpers have been set correctly and your system sees the drive.
NOTICE: Do not use SCSI-2 address 7 because the system’s SCSI-2
controller uses address 7 by default. We advise that you do not
use
SCSI-2 address 6 because the root disk drive uses it.

Introduction
1–9
SCSI
ID
0
1
2
3
4
5
6
SCSI
ID
(Default)
Term
PWR* Bit
2 Bit 1 Bit 0 Bit 2 Bit 1 Bit 0
Term
PWR*
SCSI Connector
Power Connector
Bit 2
Bit1
Bit 0
Term
PWR
*T erm PWR is not used in HP workstation configurations.
Figure 1–3. Rear View of DDS-2 Drive and SCSI Addr ess/Jumper Settings

Introduction
1–10
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Figure 1–4. Switch Settings for Data Compr ession Operation Mode