Seagate CTD4004H-S, STD14000N, CTD8000H-S, STD18000N, STD124000N DAT Drive Installation 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. 004-00000345-4) 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
Introduction
1
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
3.5-inch
internal
models
5.25-inch
internal
models
External
models
2 Gbytes 4* Gbytes 8* Gbytes 24* Gbytes
4320NT
CTD2004H-S
STD12000N
4320RT
CTD2004R-S
STD22000N
4350XT
CTD2004E-S
STD62000N
4324NP
CTD4004H-S
STD14000N
4324RP
CTD4004R-S
STD24000N
4324XP
CTD4004E-S
STD64000N
4326NP
CTD8000H-S
STD18000N
4326RP
CTD8000R-S
STD28000N
4326XP
CTD8000E-S
STD68000N
STD124000N
STD224000N
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
!
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).
2
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
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 dipswitches 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).
3
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
Figure 1
Location of switchbank—3.5-Inch DAT drive
(drive is upside down)
4
1234567
O
Connector
F
F
Power
8
Pin 1
Jumper
Block
SCSI
Connector
Figure 2
Location of switchbank—5.25-Inch DAT drive
(drive is upside down)
1234567
O
8
F
F
Power
Connector
Pin 1
Jumper
Block
Connector
SCSI
Seagate DAT Drive Installation Manual
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
5
S10
OFF
ON
Reserved
(do not use)
OFF
ON
➤ Note.
S7
S8
S9
Inquiry
Self-test
Disable
Enable
The drive must be turned OFF then ON or a
Archive
Seagate
through
DDS-DC
DDS
DDS Pass-
String
Parity
Disable
Enable
MRS
Mode
MRS
All
SCSI ID Selection
OFF
OFF
OFF
OFF
ON
ON
ON
ON
S2S3S4S5S6
OFF
OFF
ON
ON
OFF
OFF
ON
ON
S1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
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).
SCSI ID
0
1
2
3
4
5
6
7
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
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.
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 dataintegrity 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.
Each SCSI device on a bus must have a unique
6
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).
Seagate DAT Drive Installation Manual
Power-on self-test enable/disable (switch S8)
The S8 switch enables or disables execution of power-on
self-test diagnostics when the drive is powered on. If S8 is
ON, the drive responds to SCSI commands only after
successful completion of the self-test (about 5 seconds).
Switches 9 and 10
These switches are only present on DDS-3 drives. They
are reserved and should not be used.
Jumper settings
The configuration jumpers are used to control SCSI bus
termination and terminator power. The jumpers can also
be used for remote SCSI address selection. Figures 4 and 5
show the locations of the jumper blocks for the 3.5-inch
and 5.25-inch internal DAT drives, respectively.
Figure 4
Location of jumper blocks on 3.5-Inch internal
drives
7
SCSI
Connector
Pin 1
Jumper
Block
Power
Connector
Seagate DAT Drive Installation Manual
Figure 5
Location of jumpers for 5.25-inch drives
Jumper
Block
8
Pin 1
SCSI
Connector
Power
Connector
Settings for each jumper are shown in Figure 6 below.
These settings are described in detail on the following
page. The default settings are:
Terminator power is disabled.
•
Active termination is disabled.
•
Figure 6
Jumper configurations for internal DAT drives
15
Termination Power ON
(Jumper on pins 15-16)
9 7654321
8
10
1211141316
SCSI ID
ActiveTerminator
Enabled
(Jumper on pins 11-12)
Jumper ON
Pins
Pins
5-6
3-4
OFF OFF 0OFF
OFF OFF 1ON
OFF ON 2OFF
OFF ON 3ON
ON OFF 4OFF
ON OFF 5ON
ON ON 6OFF
ON ON 7ON
Jumper OFF
SCSI
Pins
1-2
ID
Seagate DAT Drive Installation Manual
Enabling SCSI termination
Active SCSI termination is disabled as the factory default.
If you need to enable active termination on the drive,
place a jumper on pins 11 and 12.
➤ Note. You need to enable the active termination if the
drive is the only device on the SCSI bus or if it is the
last device on the bus.
Terminator power
You can enable terminator power if needed for
terminators or other SCSI devices through a jumper
placement. The factory default for internal drives is that
terminator power is disabled. To enable terminator power,
place a jumper firmly over pins 15 and 16, as shown in
Figure 6.
!
Caution. If the jumper is installed, be careful not
to short the TERMPWR signal to ground.
9
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. If this occurs, the
drive will not longer supply terminator power to the bus.
To replace the fuse, you must return the drive to an
authorized repair facility.
Remote SCSI Address Selection
You can use pi ns 1 through 6 to rem o t e ly s e l ect the SCSI
address. To do so, install a remote SCSI ID switch and
connect it t o pi ns 1 t hro ugh 6 . Pi ns 1 a nd 2 conf i gure b i t 0 ;
pins 3 and 4 configure bit 1; and pins 5 and 6 configure bit 2.
➤ Note. If you use this method for ID selection, set
switches S1 through S3 to the OFF position (see
Figure 3 on page 5.)
Seagate DAT Drive Installation Manual
Mounting an internal DAT drive
You can install your Seagate internal DAT drive
horizontally or on its side.
Mount the drive using two M3.0 metric screws on each
side of the drive. Do not use screws longer than 4 mm or
you may damage the drive. The 3.5-inch drive has four
screw holes on the bottom and five on each side. The 5.25inch drive has four screw holes on the bottom and six on
each side.
Connecting power and interface cables
Attach the power and SCSI interface cables to the
connectors on the back of the drive. Figure 4 on page 7
shows the locations of these connections for the 3.5-inch
drives, and Figure 5 on page 8 shows these connections for
the 5.25-inch drives.
10
➤ Note.
The recommended power mating connector for this drive
is an AMP 1-48024-0 housing with AMP 60617-1 pins or
equivalent.
Turn off all power before inserting connectors.
Pin 1 on the SCSI connector is to your right as you
look at the back of the drive (see Figure 4 or 5). Your
SCSI cable should have pin 1 highlighted by a colored
stripe. Be sure to align pin 1 on the cable with pin 1
on the drive, or the drive may not work.
Seagate DAT Drive Installation Manual
Installing an external DAT drive
The Seagate external DAT drive is a compact external
unit that connects to the host computer as a turnkey
subsystem. External drive installation involves three
main steps:
1. Configuring the drive
2. Connecting the SCSI interface cable
3. Connecting the power cord
Configuring an external DAT drive
The following is the default configuration for Seagate
external DAT drives:
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)
11
The power-on self-test diagnostics of the drive are
•
disabled.
Termination power is supplied to the SCSI bus.
•
➤ Note. Some configuration settings in the EEPROM
can be changed using the SCSI Mode Select command.
SCSI command information for these drives is
provided in the product description manual.
Setting the SCSI ID
Make sure that the drive is turned off; then set the SCSI
ID for the drive using the + and – push-button switch on
the back of the external drive. Figure 7 on page 12 shows
this switch, as well as the two SCSI interface connectors,
on/off switch, and the power-cord connector.
➤ Note. The drive must be restarted, or a bus reset
must occur for any change in SCSI ID to take effect.
Seagate DAT Drive Installation Manual
Figure 7
Rear panel of external DAT drives
Connecting the SCSI interface cable
6
SCSI
Connectors
Push
Switch
ON/OFF
Switch
Power
Connector
12
Seagate’s external DAT drives have two SCSI connectors
to allow daisy chaining, as shown in Figure 7. You can use
either connector to attach the drive to a host computer or
to another SCSI device.
➤ Note. Turn off all power before connecting or
disconnecting cables or terminating plugs.
If the drive is the last drive or the only drive in a SCSI
chain, you must install a terminating plug on the unused
SCSI connector. See Figure 8 on the following page for an
explanation of SCSI termination. You can purchase a
terminating plug from Seagate Express (Seagate part
number 38-9-74000000).
Seagate DAT Drive Installation Manual
Figure 8
Diagram of SCSI chain with termination
External SCSI device
(termination enabled)
13
SCSI Controller
(termination enabled)
Internal SCSI device
Internal SCSI device
(termination enabled)
Example 1: SCSI termination
in a system that has only
internal SCSI devices.
Connecting the power cord
Attach the power cord securely to the power connector on
the back of the drive. The location of the power connector
is shown in Figure 7 (on the previous page).
External SCSI device
SCSI Controller
Internal SCSI device
Internal SCSI device
(termination enabled)
Example 2: SCSI termination
in a system that has both
internal and external SCSI devices.
Seagate DAT Drive Installation Manual
Operating and maintaining a DAT drive
This section describes how to use your internal or external
Seagate DAT drive. It explains the meaning of the various
lights on the front of the drive. It also describes how to use
and care for DAT cartridges.
LED codes
As shown in Figures 9 and 10, the front panel of Seagate
DAT drives contains two rectangular lights (LEDs). These
two indicators provide information about both normal and
error conditions. The yellow rectangular LED indicates
the condition of the tape drive. The green LED indicates
the condition of the tape cartridge.
➤ Note. External DAT drives also contain a round,
green power-on LED on the front panel.
Figure 9
Front panel of internal DAT drive
14
Drive Status
(yellow)
Cartridge Status
(green)
Cassette Insertion Slot
Eject Button
Seagate DAT Drive Installation Manual
Figure 10
Front panel of external DAT drive
Drive Status
(yellow)
Cartridge
Status
(green)
15
Cassette Insertion Slot
(green)
Drive status LED
The Drive Status LED is yellow and indicates the
following conditions:
If the Drive Status light is ON continuously, the
•
drive is reading or writing the tape (that is, SCSI or
DAT activity is present). If you push the eject button
while the Drive Status LED is ON, you may lose
data.
➤ Note. During a SCSI PREVENT MEDIA REMOVAL
command, the Drive Status LED is always ON.
If the drive status light is flashing rapidly, a
•
hardware fault has occurred. If this occurs
immediately after power-on and you have enabled the
power-on self-test (through a jumper setting), the
power-on self-test may have failed and the drive will
not operate.
Power
Eject Button
Seagate DAT Drive Installation Manual
Cartridge status LED
The green, rectangular Cartridge Status LED indicates
the following conditions:
If the Cartridge Status LED is ON (lit) continuously, a
•
cartridge has been inserted and is operating normally.
If the Cartridge Status LED is flashing slowly, the
•
tape cartridge currently in the drive has generated a
significant number of data retries (beyond a
predefined DDS error threshold). This signal is a
warning only and does not indicate data loss.
If you see this signal, remove the tape and clean the
tape heads using an approved DDS DAT cleaning
cartridge (such as the Seagate Model 91301). If the
LED continues flashing or flashes when ejecting the
cartridge, use a new cartridge for future writes.
➤ Note. As routine maintenance, you should clean the
drive heads after every 25 hours of operation. See
subsequent information about maintenance.
16
If the Cartridge Status LED is flashing slowly in
•
conjunction with the yellow LED, a prerecorded audio
cartridge is inserted and is being played
automatically.
If the Cartridge Status LED is flashing rapidly, the
•
drive could not write the tape correctly (maximum
rewrite count exceeded) and the write operation failed.
First, clean the drive heads using an approved DDS
DAT cleaning cartridge, such as the Seagate Model
91301. If the LED continues flashing, use a new
cartridge for future writes.
Seagate DAT Drive Installation Manual
LED Code summary
The following table summarizes LED flash codes for
Seagate DAT drives.
LED color Action Meaning
Yellow
Yellow
Green
Green
Green
Green
Round,
green LED
(external
drives only)
ON (lit) The drive is reading or writing the
tape.
Flashing Rapidly A hardware fault occurred.
ON (lit) A cartridge is inserted and does
generate excessive errors.
Flashing Slowly A cartridge is inserted but generates
excessive errors beyond a
predefined error threshold. (Warning
only)
to clean the heads.
Flashing Slowly (with
yellow LED flashing)
Flashing Rapidly The drive could not write the tape
ON (lit) The external drive is powered on.
A prerecorded audio cartridge is
inserted and is being played
automatically.
correctly. (Error)
cleaning cartridge to clean the
heads.
17
not
Use a DDS cleaning cartridge
Use a DDS DAT
Loading a cartridge
Seagate DAT drives have a front-loading cartridge bay for
easy operation. The drive-bay door opens automatically
when a cartridge is inserted. Figure 11 on the following
page shows a cartridge being inserted into a 3.5-inch
internal drive. After you insert the cartridge, there will be
a brief delay while the drive identifies the cartridge type
and state and moves the tape to the data area.
Seagate DAT Drive Installation Manual
Figure 11
Loading a DAT tape cartridge (3.5-inch drive)
Unloading a cartridge
!
Caution. Do not push the eject button while the
Drive Status LED is ON. You may lose data.
18
Make sure that the drive-status light is not lit. Then unload
the cartridge by pressing the eject button. For the location of
the eject button, see Figure 9 on page 14 or Figure 10 on page
15. After you press the eject button, the drive automatically
flushes the drive buffer to tape, updates the system log and
rewinds t he ca rt ri d ge before eje ct i ng i t .
➤ Note. Several seconds may elapse between the time
you press the eject button and the time the cartridge
is ejected. Do not power down the tape drive or the
host computer during this time.
Initializing a blank DAT cartridge
When you insert a blank cartridge into the drive for the
first time, the drive takes about 10 to 12 seconds to
determine that the tape is blank. The drive will
automatically initialize the tape the next time it receives a
write command from the host computer. Initializing a
Seagate DAT Drive Installation Manual
blank tape takes about 30 seconds. Write operations are
completed during the initializing operation without delay
until all internal buffers are filled.
➤ Note.
complete causes the procedure to abort. The
initialization will restart from the beginning the next
time a WRITE command is received.
➤ Note. The data buffer of the drive is flushed to tape if
a REWIND command is issued, if the eject button is
pushed, or if a delay in SCSI activity occurs. By
default, the delay before the flush occurs is set to one
minute. However, this delay time can be modified by
the host application using a MODE SELECT
command.
Ejecting the cartridge before the initialization is
DAT cartridge compatibility
Seagate DAT drives are designed to use data-grade DDS
DAT cartridges, which comply with ANSI specifications
listed in the “3.81 mm Helical-Scan Digital Computer
Tape Cartridge for Information Interchange,” ANSI
X3B5/89-156 standard.
19
To ensure optimal data integrity and reliability, we
recommend using the following Seagate-qualified, DDS
DAT cartridges:
Model M31300 (60 meters)
•
Model M32000 (90 meters)
•
Model M34000 (120 meters)
•
Model M312000 (125 meters; DDS-3 only)
•
DDS-2 and DDS-3 DAT drives also recognize 120-meter
MP+ cartridges and other MRS cartridges when MRS is
enabled. MRS cartridges have a series of alternate opaque
and clear stripes at the beginning of the tape. These
stripes classify the media as data-grade, rather than
audio-grade. Four recognition holes allow the drive to
identify the type of tape, determine its magnetic
Seagate DAT Drive Installation Manual
thickness, and to determine whether the tape is
prerecorded or unrecorded or is a cleaning cartridge.
Other cartridge features that allow the drive to optically
sense cartridge in are Beginning-of-tape and End-of-tape.
➤ Note. A slowly flashing green LED in conjunction
with the yellow LED indicates that a prerecorded
audio tape has been inserted in the drive.
Write-protecting a DAT cartridge
Figure 12 shows how to write-protect or write-enable a DAT
tape using the sliding write-protect tab. You can only write
data to the tape when the tab is in the closed position.
Figure 12
Write-protect tab on the DAT cartridge
20
Cleaning the tape heads
If excessive magnetic dust or debris collects at one or more of
the tape heads, your drive may not be able to read from or
write to tape. To avoid this situation, you must clean the tape
heads on yo ur DA T dri ve i n t he f ol l o wi ng circum stances:
After the first four hours of tape movement of a new
•
cartridge
After every 25 hours of read/write operation
•
Whenever the rectangular, green cartridge-status
•
LED flashes during operation
Write
Enabled
Write
Protected
Seagate DAT Drive Installation Manual
➤ Note.
a tape is damaged or is nearing the end of its life. If
cleaning the head does not correct the flashing LED
condition, replace the cartridge. The slowly flashing
LED does not indicate a loss of data, nor does it
indicate SCSI problems.
To clean the tape heads on your DAT drive, use only a
Seagate-qualified DDS DAT cleaning cartridge designed
for DAT drives. Seagate offers a cleaning cartridge, Model
91301 that you can order from Seagate Express (five per
package).
After you insert the cleaning cartridge, the drive detects
that the cartridge is a cleaning cartridge, then loads and
runs the cartridge for about 30 seconds. When cleaning is
complete, the drive ejects the cartridge.
A slowly flashing green LED may indicate that
21
➤ Note.
➤ Note. Do not use an audio DAT cleaning cartridge.
Each time the cleaning cartridge is loaded, a
new, unused portion of cleaning tape is advanced over
the entire tape path. The drive does not rewind a
cleaning cartridge. After about 30 cleaning cycles, the
entire tape is used, and you must purchase a new
cleaning cartridge.
If you insert a cleaning tape that has been used up,
the drive ejects the tape without completing a cleaning
operation. This process takes just under 25 seconds.
The drive cannot recognize it.
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