Seagate STD224000N - DAT Scorpion 24 Tape Drive User manual

Seagate DAT Drive Installation Manual
English

Seagate DAT Drive Installation Manual

Seagate DAT Drive Installation Manual
Contents
FCC notice
Introduction 1
Before you begin 1
SCSI cables and connectors 2
Installing an internal DAT drive 3
Configuring an internal DAT drive 3
Mounting an internal DAT drive 10
Connecting power and interface cables 10
Installing an external DAT drive 11
Configuring an external DAT drive 11
Connecting the SCSI interface cable 12
Connecting the power cord 13
Operating and maintaining a DAT drive 14
LED codes 14
Loading a cartridge 17
Unloading a cartridge 18
Initializing a blank DAT cartridge 18
DAT cartridge compatibility 19
Write-protecting a DAT cartridge 20
Cleaning the tape heads 20
Technical support 22

Seagate DAT Drive Installation Manual
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:
• Reorient or relocate the receiving antenna.
• Increase the separation between the computer and the receiver.
• Connect the computer into an outlet on a circuit different from that
to which the receiver is connected.
• Consult the dealer or an experienced radio/television technician for
help.
You may find the following booklet prepared by the Federal
Communications Commission helpful: How to Identify and Resolve
Radio–TV Interference Problems. This booklet (Stock No. 004-000-
00345-4) is available from the U.S. Government Printing Office,
Washington, DC 20402. 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 Publication 10002664-005, July 1997

Seagate DAT Drive Installation Manual
1
Introduction
This installation manual contains information on how to
install and operate Seagatedigital audio tape (DAT)
drives. This manual covers DAT drives that support the
DDS (digital data storage), DDS-DC (digital data storage
data compression), DDS-2 and DDS-3 tape formats.
The following table identifies the Seagate DAT drive
models covered by this manual and the tape formats that
they support.
Format DDS DDS-DC DDS-2 DDS-3
Capacity 2 Gbytes 4* Gbytes 8* Gbytes 24* Gbytes
3.5-inch
internal
models
4320NT
CTD2004H-S
STD12000N
4324NP
CTD4004H-S
STD14000N
4326NP
CTD8000H-S
STD18000N
STD124000N
5.25-inch
internal
models
4320RT
CTD2004R-S
STD22000N
4324RP
CTD4004R-S
STD24000N
4326RP
CTD8000R-S
STD28000N
STD224000N
External
models 4350XT
CTD2004E-S
STD62000N
4324XP
CTD4004E-S
STD64000N
4326XP
CTD8000E-S
STD68000N
STD624000N
* Typical capacity, assuming 2:1 data compression. Native capacity is
one half these values.
Before you begin
!Caution. To avoid data loss, you must clean the
drive heads using a DDS head-cleaning cartridge
after every 25 hours of read/write operation and
whenever the green, cartridge-status LED flashes
during operation.

Seagate DAT Drive Installation Manual
2
!Caution. Observe the following precautions to
avoid electrostatic damage to your internal tape
drive.
• Do not remove the drive from the antistatic bag until
you are ready to install it.
• Before you remove the drive from the antistatic bag,
touch a grounded metal surface to discharge any static
electricity buildup from your body.
• Hold the drive only by its edges and avoid direct
contact with any electronic components.
• If you need to put down the drive, lay it on top of the
antistatic bag or place it inside the bag.
SCSI cables and connectors
These DAT drives support connection to a standard,
single-ended SCSI or SCSI-2 interface. A 50-conductor flat
cable or a 25-signal twisted-pair cable may be used to
connect the drive to its SCSI host adapter. The cable
should not be longer than 6 meters (19.5 feet).
The internal DAT drive provides a 50-pin, right-angle,
dual-row single-ended SCSI connector attached to the
main PCB at the back of the drive.
The external DAT drive provides two 50-pin, shielded
connectors (ANSI Alternative 2) on the rear panel of the
drive. These connectors consist of two rows of ribbon
contacts spaced 2.16 mm (0.085 in) apart. Either
connector can be used as a SCSI IN or SCSI OUT
connection.
➤ Note: If the DAT drive is the last device in the chain
(or the only device), an external terminator must be
plugged into the unused SCSI connector. To order
terminators through Seagate Express, ask for Seagate
part number 38-9-74000000.

Seagate DAT Drive Installation Manual
3
Installing an internal DAT drive
Internal drive installation involves three main steps:
1. Configuring the drive
2. Mounting the drive
3. Connecting power and interface cables
Internal DAT drives come in two configurations, for
mounting in 3.5-inch or 5.25-inch drive bays, respectively.
Except for mounting the drive, installation procedures are
the same for both types of drives.
Configuring an internal DAT drive
Before you install the tape drive in your computer, you
may need to configure the drive’s SCSI ID or other drive
features. Most features are set using a bank of dip-
switches on the underside of the drive. To control SCSI
termination and terminator power or to configure the
drive for remote SCSI address selection, use the jumpers
on the back of the drive (beneath the interface and power
connectors).
Dip-switch settings
Figures 1 and 2 on page 4 show the location of dip
switches on the underside of 3.5-inch and 5.25-inch
internal drives, respectively. You can access the
switchbank through a rectangular cutout in the drive
shell.
➤ Note. DDS-3 drives have two additional reserved dip
switches on each switchbank. These reserved switches
are not shown in Figures 1 and 2.

Seagate DAT Drive Installation Manual
4
Figure 1
Location of switchbank—3.5-Inch DAT drive
(drive is upside down)
1 2 3 4 5 6 7 8
O
F F
Power
Connector
Pin 1
Jumper
Block SCSI
Connector
Figure 2
Location of switchbank—5.25-Inch DAT drive
(drive is upside down)
1 2 3 4 5 6 7 8
O
F F
Power
Connector
Pin 1
Jumper
Block
SCSI
Connector

Seagate DAT Drive Installation Manual
5
Factory-default settings for each switch are shown in
Figure 3 (only DDS-3 drives have switches S9 and S10).
These settings are described in detail on the following
pages.
Figure 3
Default dip-switch settings
S1
Inquiry
String
S2S3S4S5S6
S7
S8
OFF
DDS Pass-
through
Self-test
ON
OFF
ON
Parity MRS
Mode
Disable
Enable
Archive
Seagate
DDS-DC
DDS
Disable
Enable
MRS
All
SCSI ID Selection SCSI ID
0
1
2
3
4
5
6
7
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
S9
S10
Reserved
(do not use)
➤ Note.
The drive must be turned OFF then ON or a
SCSI Bus Reset must be received for switch settings to
take effect.
The default dip switch settings for this drive are listed
below:
• SCSI ID 0
• The drive reads or writes both MRS and non-MRS
4-mm media.
• Parity checking is disabled.
• DDS-DC data compression is enabled (applies only to
models that support data compression).
• Seagate inquiry string is enabled.
• Power-on self-test diagnostics are disabled.
If these default settings are appropriate for your computer
system and you do not need to enable SCSI termination
for this drive, then turn to “Mounting an internal DAT
drive” on page 10.

Seagate DAT Drive Installation Manual
6
SCSI ID switches (switches S1 through S3)
The three switches S1 through S3 correspond to the SCSI
device address identification bits 0 (LSB) through 2
(MSB), respectively.
➤ Note.
Each SCSI device on a bus must have a unique
SCSI ID. The SCSI host controller generally uses
ID 7. In some systems, the boot drive uses ID 0.
Media-recognition system (switch S4)
The media-recognition system allows the drive to detect
DDS cartridges that support this feature. Use of non-DDS
media may appear to give satisfactory results, but the
inferior specifications of such media can cause data-
integrity problems.
The S4 switch enables or disables media-recognition
system (MRS) mode. If S4 is ON, the drive reads or writes
both MRS and non-MRS 4-mm media. If S4 is OFF, the
drive reads and writes to MRS media and reads from but
does not write to 4-mm media.
Parity check enable/disable (switch S5)
The S5 switch enables or disables parity checking for the
SCSI bus. When parity checking is disabled, parity is still
generated by the drive.
If switch S5 is on, parity checking is enabled. The default
setting is parity checking disabled (S5 set to off).
DDS pass-through mode enable/disable (switch S6)
If switch S6 is on, DDS pass-through is enabled (data
compression is disabled).
➤ Note. The function of the S6 switch can be overridden
by the proper SCSI MODE SELECT command issued
from the host computer.
Inquiry string (switch S7)
The S7 switch is used to set the inquiry string used by the
drive. It should be left in its factory-default setting (ON).