Seagate MARATHON 2130SL, MARATHON 1420SL Product Manual

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Marathon 2130sl

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Marathon 1420sl

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ATA Interface Drives

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Product Manual

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Marathon 2130sl (ST92130AG)

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Marathon 1420sl (ST91420AG)

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ATA Interface Drives

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Product Manual

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1997 Seagate Technology, Inc. All rights reserved
Publication Number: 20401053-001, Rev. A, March 1997
Seagate, Seagate Technology, the Seagate logo, Marathon and

SafeRite are either trademarks or registered trademarks of Seagate
Technology, Inc. Other product names are registered trademarks or
trademarks of their owners.

Seagate reserves the right t o change, without notice, produc t offerings
or specifications. No part of this publication may be reproduced in any
form without written permission from Seagate Technology, Inc.

Marathon 2130sl and 1420sl Product Manual iii

Contents

Introdu c tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Specification summary table . . . . . . . . . . . . . . . . . . . 2

1.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . 5

1.1.1 Default logical geometry . . . . . . . . . . . . . . . . 5

1.1.2 Supported translation geometries . . . . . . . . . . . 6

1.2 Physical organization . . . . . . . . . . . . . . . . . . . . 6

1.3 Recording and interface technology . . . . . . . . . . . . . 6

1.4 Physical characteristics . . . . . . . . . . . . . . . . . . . 7

1.5 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6 Start times . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.7 Power specifications . . . . . . . . . . . . . . . . . . . . . 8

1.7.1 Power consumption . . . . . . . . . . . . . . . . . . 8

1.7.2 Power recovery . . . . . . . . . . . . . . . . . . . . . 9

1.7.3 Conducted noise . . . . . . . . . . . . . . . . . . . . 10

1.7.4 Voltage tolerance . . . . . . . . . . . . . . . . . . . . 10

1.7.5 Power-management modes . . . . . . . . . . . . . . 10

1.8 Environ mental tolerances . . . . . . . . . . . . . . . . . . 12

1.8.1 Ambient temperature . . . . . . . . . . . . . . . . . . 12

1.8.2 Temperature gradient . . . . . . . . . . . . . . . . . 12

1.8.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . 12

1.8.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.8.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.8.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . 13

1.9 Drive acoustics . . . . . . . . . . . . . . . . . . . . . . . 14

1.10 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1.11 Agency certification . . . . . . . . . . . . . . . . . . . . 15

1.11.1 Safety certification . . . . . . . . . . . . . . . . . . 15

iv Marathon 2130sl and 1420sl Product Manual

1.11.2 Electromagnetic Compatibility . . . . . . . . . . . . 15

1.11.3 FCC verification . . . . . . . . . . . . . . . . . . . . 16

2.0 Drive mounting and configuration . . . . . . . . . . . . . . 17

2.1 Handling and static-discharge precautions . . . . . . . . . 17

2.2 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . 17

2.2.1 Master/slave configuration . . . . . . . . . . . . . . . 17

2.3 Remote LED configuration . . . . . . . . . . . . . . . . . 19

2.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . 19

2.5 ATA interface connector . . . . . . . . . . . . . . . . . . . 23

3.0 ATA Attachment-3 Interface (ATA-3) . . . . . . . . . . . . . 25

3.1 ATA interface signals and connector pins . . . . . . . . . . 25

3.1.1 AT bus signal levels . . . . . . . . . . . . . . . . . . 25

3.2 ATA Interface commands . . . . . . . . . . . . . . . . . . 27

3.2.1 Supported ATA commands . . . . . . . . . . . . . . . 27

3.2.2 Identify Drive command . . . . . . . . . . . . . . . . 29

3.2.3 Set Features command . . . . . . . . . . . . . . . . 32

3.2.4 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . 34

3.2.5 Drive-Security commands . . . . . . . . . . . . . . . 35

Appendix. Compatibility notes . . . . . . . . . . . . . . . . . . 37

Marathon 2130sl and 1420sl Product Manual v

Figures

Figure 1. Typical startup and operation current profile. . . . . . . . 9

Figure 2. Connector and master/slave jumper setup . . . . . . . . 18

Figure 3. Drive mounting dimensions—side and bottom view. . . . 20

Figure 4. Drive mounting dimensions—end view . . . . . . . . . . 21

Figure 5. ATA Interface connector dimensions . . . . . . . . . . . 23

Figure 6. I/O pins and supported ATA signals . . . . . . . . . . . 26

vi Marathon 2130sl and 1420sl Product Manual

Marathon 2130sl and 1420sl Product Manual 1

Introduction

The Marathon 2130sl (ST92130AG) and 1420sl (ST91420AG) provide
very high storage capacity in a small, low-profile hard disc drive.

Key Features:

• Low power consumption

• Low profile (12.7-mm high); compact, SFF-8200 -comp atible form-factor

• Quiet operation

• S afeRite shock protection

• High instantaneous (burst) data-transfer rates (up to 16.6 Mbytes per

second) using PIO mode 4 and DMA mode 2

• 103-Kbyte adaptive multisegmented cache

• Improved caching and on-the-fly error-correction algorithms

• Suppor t for PIO modes 0, 1, 2, 3 and 4, as well as single-word and

multiword DMA modes 0, 1 and 2

• S uppor t for S.M.A.R.T. drive monitoring and reporting

• S uppor t for drive password security

• Support for Read/Write Multiple commands

• S upport for autodetection of master/slave drives using cable-select

(CSEL) and DASP– signals

2 Marathon 2130sl and 1420sl Product Manual

Specification summary table

The specifications listed in this table are for quick reference. For details
on specification measurement or definit ion, see the appropriate section
of this manual.

Drive Specification 2130sl 1420sl

Guaranteed Mbytes
(1 Mbyte=10

Guaranteed sectors
(LBA mode) 4,224,878 2,816,352

Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 4,191 2,794
Physical read/wr ite he ads 6 4
Discs 3 2
Recording densit y

(bits/inch max) 154,000
Track density (tracks/inch) 7,194
Areal density

(Mbits/inch
Spindle speed (RPM) 4,508
Internal data-transfer rate

(Mbits/sec max) 71.3
I/O data-transf er ra te

(Mbytes/sec m ax) 16.6

6

bytes) 2,163 1,441

2

max) 1,108

A TA data-tr ansf er mo des sup­ported

Cache buffer (Kbytes) 103
Height (mm max) 12.7
Width (mm max) 70.1
Length (mm max) 100.94
Weight (grams max ) 165 160

PIO modes 0, 1, 2, 3, 4 an d

multiword DMA modes 0, 1, 2

Marathon 2130sl and 1420sl Product Manual 3

Drive Specification 2130sl 1420sl

Track-t o- track seek time
(msec typical) 4 (read), 5 (write)

Average seek tim e
(msec typical) 12 (read), 14 (write)

Full-stroke se ek t ime
(msec max) 26 (read), 28 (write)

Average latency (msec) 6.66
Power-on to ready

(sec typical) 3
Standby to ready

(sec typical) 2
Spinup current (pe ak) 1.1 amps
Read/Writ e power and current

(typical) 2.4 watts, 0. 48 am ps
Seek power and curren t

(typical) 2.3 watts, 0. 46 am ps
Idle mode power and cu rrent

(typical) 1.0 watts, 0. 20 am ps
Standby mode power

and current (typical) 0.3 watts, 0.06 am ps
Sleep mode power an d cur ren t

(typical) 0.16 watts, 0.033 amps
Volt age t oler ance

(including noise)
Ambient temperature (°C) 5 to 60 (op.), –40 to 70 (nonop.)
Temperature gradient

(°C per hour max) 30
Relative humidity (ope rati ng) 8% to 80%

Wet bulb temper at ur e (°C max) 29.4 (op.), 40 (nonop .)
Altitude (meters ab ove m ean

sea level max)
Shock, operating (G s ma x) 125 (2 mse c)
Shock, nonoperati ng

(Gs max, 2 msec) 350

+5 volts,

(10% per hour max grad. )

–300 to 3,040 (op.),

–300 to 12,190 (non op. )

±

5%

4 Marathon 2130sl and 1420sl Product Manual

Drive Specification 2130sl 1420sl

Vibration
(Gs max at 5–400 Hz,
without physica l da ma ge or los s
of data)

Drive acoustics
(bels—sound po w er)
Idle mode
(dBA—sound pressure)

Drive acoustics
(bels—sound po w er)
Seek mode
(dBA—sound pressure)

Nonrecoverable rea d error s 1 per 10
Mean time between failures

(power-on hours) at 40°C 350,000
Contact start-st op cy cl es

(40°C, ambient humidi t y) 50,000
Service life (years) 5

0.75 (op.)

4.0 (nonop.)

3.5 (typical), 3. 8 (max)
24 (typical), 28 (max)

3.8 (typical), 4. 1 (max)
26 (typical), 30 (max)

13

bits read

Marathon 2130sl and 1420sl Product Manual 5

1.0 Drive specifications

Unless otherwise noted, all specific ations are measured under ambient
conditions, at 40°C, at sea level and nominal power.

1.1 Formatted capacity

2130sl 1420sl

Guaranteed Kbytes 2,163,137.5 1,441,972.2
Guaranteed sectors

(LBA mode)
Bytes per sector 512 512

DOS systems cannot access more than 528 Mbytes unless 1)

Note.

the host system supports and is configured for LBA address­ing or for extended CHS addressing, or 2) the host system
contains a specialized drive controller, or 3) the host system
runs BIOS translation software. Contact your Seagate
sentative for details.

4,224,878 2,816,352



repre-

1.1.1 Default logical geometry

CHS Mode 2130sl 1420sl

Sectors per trac k 63 63
Read/write heads 16 16
Cylinders 4,191 2,794

LBA Mode

When addressing any model in LBA mode, all blocks (sectors) are
consecutively numbered from 0 to

n – 1.

6 Marathon 2130sl and 1420sl Product Manual

1.1.2 Supported translation geometries

The Marathon 2130sl and 1420sl support any translation geometry that
satisfies

of the following conditions:

all

2130sl 1420sl

Sectors per trac k
Read/write heads
Total cylinders (CHS)*

Total cylinders (LBA)*
*Total cylinders = (sectors per track) (read/write heads) (cylinders)

≤ 63 ≤ 63
≤ 16 ≤ 16
≤ 4,224,528

≤ 4,224,878

≤ 2,816,352
≤ 2,816,352

1.2 Physical organization

Read/Write heads 6 4
Discs 3 2

1.3 Recordin g and inte rf ace tec hn ology

2130sl/1420sl

Interface
Recording method
Recording density

(bits/inch max)
Track density (tracks/inch)
Areal density

(Mbits/inch
Spindle speed (RPM)

( ± 0.5%)
Internal data-transfer rate

(Mbits per sec max)
I/O data-transfer rate

(Mbytes per sec max)

2

max)

ATA
16/17

154,000
7,194
1,108

4,508

71.3

16.6 (PIO mode 4 with IORDY)

16.6 (multiword DMA mode 2)
Interleave
Cache buffer (Kbytes)

1:1
103

Marathon 2130sl and 1420sl Product Manual 7

1.4 Physical characteristics

2130sl 1420sl

Maximum height (mm)

(inches)

Maximum width (mm)

(inches)

Maximum length (mm)

(inches)

Maximum weight (grams)

(ounces)

12.70

0.500

70.1

2.76

100.94

3.974
165

5.82

12.70

0.500

70.1

2.76

100.94

3.974
160

5.64

1.5 Seek time

All seek times are measured using a 25 MHz 486 AT computer (or faster)
with an 8.3 MHz I/O bus. The measurements are taken wit h nominal
power at sea level. The specifications in the table below are defined as
follows:

• Track-to-track seek time is an average of all possible single-track
seeks in both directions.

• Average seek time is a true statistical random average of at least 5,000
measurements of seeks between random tracks, less overhead.

• Full-stroke seek time is one-half the time needed to seek from the first
data cylinder to the maximum data cylinder and back to the first data
cylinder. The full-stroke typical value is determined by averaging 100
full-stroke seeks in both directions.

Seek type Typical read

(msec)

Track-to-track 4 5
Average 12 14
Full-stroke (max) 26 28
Average latency: 6.65 msec

Typical write
(msec)

8 Marathon 2130sl and 1420sl Product Manual

1.6 Start times

Power-on to Ready (sec) 3 typical
Standby to Ready (sec) 2 typical
Idle to Ready (sec) 0.4 typical

1.7 Power specif icat io ns

The drive receives DC power (+5V) through pin 41 and pin 42 of the AT
interface connector.

1.7.1 Power consumption

Power requirements for the drive are listed in the table below. Typical power
measurement s are based o n an average of dri ves tested unde r nominal
conditi ons, us ing 5.0V input volt age at 2 5°C ambi ent tempe rature a t sea
level. Unless specified as peak, all other measurements are RMS. Active
mode current and power are measured with an 8-msec delay between each
operatio n and the drive in def ault logical geometr y. Seeking power and
currents are measured during random seeks. Read/write power and current
are measured with the heads on track, based on a 16-sector write followed
by a 16-sector read. Spinup power is measured from typical time of
power-on to time of drive-ready for normal operation.

Mode

Spinup

Peak
Average

Active

Read/Write

Seek
Idle 1.0
Standby 0.3
Sleep 0.16

Watts
(at nominal voltage)

Typical Max Typical Max

—

3.0

2.4

2.3

—
—

2.5

2.5

1.15

0.35

0.18

Amps
(at nominal voltage)

1.1

0.6

0.48

0.46

0.20

0.06

0.033

—

0.50

0.50

0.23

0.07

0.036

Marathon 2130sl and 1420sl Product Manual 9

Current (Amps)

Spinup

1.00

Drive ready

0.80

0.60

0.40

0.20

0

0

Upload code

2

1

Active

mode

3

57

4

Time (seconds)

Idle

mode

6810

Standby

mode

Sleep
mode

9

Figure 1. Typical startup and operation curr ent profile

1.7. 1.1 Typical current profile

Figure 1 shows a typical drive startup and operation c urrent profile for
the Marathon 2130sl and 1420sl.

The peaks in this profile are the result of inductive kickback from

Note.

the commutation of the spindle motor and, therefore, do not draw
power from the battery. The average peak represents peak
power that is drawn from the battery.

1.7.2 Power recovery

Except during execution of a write command or writing cached data, the
drive’s power can be interrupted without adversely affecting the drive or
previously written data. If power is removed while the drive is performing
a write operation, the integrity of the data being written cannot be
guaranteed.

Do not remove power from the drive while keeping the interface sig-

Note.

nals active (at low impedance). Power may enter the input buffers.

10 Marathon 2130sl and 1420sl Product Manual

1.7.3 Conducted noise

The drive is expected to operate with a maximum of:

• 150 mV peak-to-peak triangular-wave injected noise at the power
connector. The frequency is 10 Hz to 100 KHz with equivalent resistive
loads.*

• 100 mV peak-to-peak triangular-wave injected noise at the power
connector. The frequency is 100 KHz to 10 MHz with equivalent
resistive loads.*

* Equivalent resistance ( 10 ohms) is c alc ulated by div iding the nominal

voltage (5V) by the typical RMS read/write current (0.5 amps).

1.7.4 Voltage to lerance

Voltage tolerance (including noise): +5 volts, ± 5%

1.7.5 Power-management modes

Seagate’s Marathon drives provide programmable power management
to enhance battery life and to provide greater energy efficiency. In most
computers, you can control power management through the system
setup program. These drives feature several power-management
modes, which are summarized in the following table and desc ribed in
more detail below:

Mode Heads Spindle Buffer

Active Moving Rotating Enabled
Idle Varies Rotating Enabled
Standby Parked Stopped Enabl ed
Sleep Parked Stopped Disabled

Active mode.

operations.

Idle mode .

after 5 seconds of inactivity. The drive remains in Idle mode with heads flying
over the media for 15 minutes; then the drive makes the transition to Active
mode and seeks to the last known logical block address, where it remains
for 5 minutes. The drive then seeks to a new, unspecified location two more
times, for 5 minutes each, after which i t makes the transi tion to Standby
mode. In Idle mode, the spindle remai ns up to sp eed, the buffe r remains
enab le d, and the dr i v e acce pts all c omman d s and returns to Active mode
whenever a disc access command is received.

The drive is in Active mode during the read/write and seek

At pow er-on, the d rive s ets t he Idle T imer t o e nter I dle mode

Marathon 2130sl and 1420sl Product Manual 11

The drive enters Idle mode when an Idle or Idle Immediate command is
received. The Idle or I dle Immediate command overrides the algorit hm
described above. The drive remains in Idle mode until a disc access
command is received or the standby timer expires, whichever occurs first.
When the standby timer expires, t he drive makes the transition t o the
Standby mode. The drive requires appr oxi mately 400 m sec t o retur n to
Active mode from Idle mode.

Standby mode.

Standby or Standby Immediate command. If the standby timer has been set
by the Standby com mand, the drive enters S tandby mode automatic ally
after the drive has been inactive for the specified length of time. In Standby
mode, the buffer remains enabled, the heads are parked and the spindle is
at rest. Th e driv e accepts a ll comma nds and ret urns to Ac tive mod e any
time a disc access command is received. The drive requires approximately
3 seconds to return to Active mode from Standby mode.

Sleep mode.

command from the host. The heads are parked and the spindle is at rest.
The ROM and RAM codes are valid; however, the cache is flushed before
the drive enters Sleep mode. The drive leaves Sleep mode when either
a Hard Reset interface signal or a Soft Reset signal (Device Control
register=04) is rec eiv ed from the host. After rec eiv ing a Soft Reset, the
drive exits Sleep mode and enters Standby mode, with all current
emulation and translation parameters intact. After receiving a Hard Reset
signal, the drive exits Sleep mode and enters Active mode. The drive is
reinitialized to the def ault parameters. This is the same procedure as
initial power on and typically requires 3 seconds to complete.

Idle and standby timers.

timer at pow er- on t o 5 seco nds. If the i dle t imer r each es ze ro b efor e any
drive ac tivity i s requ ired, the drive makes a tr ansition to Idle m ode. Eac h
time the drive performs an Active function (read, write or seek), the idle and
standby timers are reinitialized and begin counting down from their specified
delay times to zero. If the standby timer has been set and no additional drive
activit y oc c ur s , the drive remains i n Idle mode for the time spec ified in t he
standby timer, then enters Standby mode.

The dri ve enter s Standb y mode when the h ost send s a

The drive enters Sleep mode only after receiving a Sleep

The drive sets the default time delay for the idle

If the host has not set the standby timer and no additional drive activ ity
occurs, the drive remains in Idle mode for 30 minutes, then enters
standby mode. In both I dle and Standby mode, the drive accepts all
commands and returns to Active mode when disc access is necessary.

Note to system developers.

tines and hardware, you must m ake sure t hat the drive has completed
its power mode transition before issuing hardware or software resets or
removing power from the ATA interface.

When designing power-management rou-

12 Marathon 2130sl and 1420sl Product Manual

If write caching is active, the drive must have time to flus h the cac he to
the disc before resets or power r emoval occurs. When the Standby or
Standby Immediate command is issued, the drive sets BSY status,
flushes the cache to disc, clears BSY status and then issues an interrupt
to the host computer. Therefore, the host computer must wait for this
interrupt before issuing resets or removing power from the drive. Failing
to observe this procedure may r esult in data corruption on the drive.
Issuing resets or turning off power t o the drive without fir st issuing a
Standby or Standby Immediate command to flush the cache also leaves
corrupted data on the drive if the write cache has active data in it.

Under normal circumstances, the Standby or Standby Immediate com­mands take approximately 700–800 msec to complete. However, they
can take longer if error recovery is used. Therefore, it is not a good
programming practice to use a timing loop to determine when these
commands should be complete. Waiting for the interrupt is the safe,
closed-loop method to know when a reset can be iss ued or power can
be turned off.

1.8 Environmental tolerances

1.8.1 Ambient temperature

Operating 5° to 60°C (41° to 140°F)
Nonoperating –40° to 70°C (–40° to 158°F)

Caution.

This drive needs sufficient airflow so that the maximum surface
temperatu re at the cen ter of the top c ov er of the drive does not
exceed 62 degrees C (144 degrees F).

1.8.2 Temperature gradient

Operating 30°C / hr (86°F / hr) max, without condensation
Nonoperating 30°C / hr (86°F / hr) max, without condensation

1.8.3 Humidity

1.8.3.1 Relati ve humidity

Operating 8% to 80% noncondensing (10% per hour max)
Storage 5% to 95% noncondensing (10% per hour max)
Transit 5% to 95% noncondensing (10% per hour max)

Marathon 2130sl and 1420sl Product Manual 13

1.8.3.2 Wet bulb temperature

Operating 29.4°C (85°F) max
Nonoperating 40°C (104°F) max

1.8.4 Altitude

Operating –300 m to 3,040 m (–1,000 ft to 10,000 ft)
Nonoperating –300 m to 12,190 m (–1,000 ft to 40,000 ft)

1.8.5 Shock

For all shock specifications, it is assumed that the drive is mounted
securely with the input levels at the drive mounting screws. For the
nonoperating specifications, it is assumed that the read/write heads are
positioned in the shipping zone.

At power-down, the read/write heads automatically move to

Note.

the shipping zone. The head assembly parks outside of the
maximum data cylinder. When power is applied, the heads re­calibrate to Track 0.

1.8.5.1 Operating shock

The Marathon 2130sl and 1420sl incorporate SafeRite shock protection
and can withstand a maximum operating shock of 125 Gs without
nonrecoverable data errors (based on half-sine shock pulses of 2 msec).

1.8.5.2 Nonoperating shock

The nonoperating shock level that the Marathon 2130sl and 1420sl can
experience without incurring physical damage or degradation in perform­ance is 350 Gs (based on half-sine shock pulses of 2 msec duration) or
150 Gs (based on half-sine shock pulses of 11 msec duration). Shock
pulses are defined by MIL-STD-202 F with the amplitude tolerance
controlled to ± 5%.

1.8.6 Vibration

For all vibration specifications, it is assumed that the drive is mounted in
an approved orientation with the input levels at the drive mounting
screws. For the nonoperating specifications, it is assumed that the
read/write heads are positioned in the shipping zone.

14 Marathon 2130sl and 1420sl Product Manual

1.8.6.1 Operating vibration

The following table lists the maximum vibration levels that the drive may
experience without incurring physical damage, data loss or performance
degradation.

5–22 Hz 0.02-inch displacement (peak-to-peak)
22–400 Hz 0.75 Gs acceleration (0 to peak)
400–22 Hz 0.75 Gs acceleration (0 to peak)
22–5 Hz 0.02-inch displacement (peak-to-peak)

1.8.6.2 Nonoperating vibration

The following table lists the maximum nonoperating vibration that the
drive may experience without incurring physical damage or degradation
in performance.

5–20 Hz 0.2-inch displacement (peak-to-peak)
20–400 Hz 4 Gs acceleration (0 to peak)
400–20 Hz 4 Gs acceleration (0 to peak)
20–5 Hz 0.2-inch displacement (peak-to-peak)

1.9 Drive acoustics

Drive acoustics are measured as sound power, using techniques that are
generally con sistent with ISO d ocument 7779. M easurements are taken under
essentially free-field conditions over a reflecting plane, using a total of ten
microphones that measure in the 125–8,000 Hz band. This methodology
determines broad-band and narrow-band noise, and discrete frequency
components. Fo r all tests, the drive is oriented with the co ver facing upward.

Mode Typical Maximum

Idle (sound power, bels)
Seek (sound power, bels)
Idle (sound pressure, dBA)
Seek (sound pressure, dBA)

3.5

3.8
24
26

3.8

4.1
28
30

Marathon 2130sl and 1420sl Product Manual 15

1.10 Reliability

Nonrecoverable read errors 1 per 1013 bits read
Mean time between failures 350,000 power-on hours

(nominal power, at sea level,
40°C ambient temperature)

Contact start-stop cycles 50,000 cycles

(at nominal voltage and 40°C ambient
temperature, with 120 cycles per

hour and a 50% duty cycle)
Preventive maintenance None required
Service life 5 years

1.11 Agency certification

1.11.1 Safety certification

The drive is recognized in ac cordance with UL 1950 and CSA C22.2
(950-M89) and meets all applicable sections of IEC 380, IEC 435,
IEC 950, VDE 0806/08.81 and E N 60950 as tested by TUV-Rheinland,
North America.

1.11.2 Electr omag net ic Compat ibilit y

Hard drives that display the CE marking comply with European Union
requirements specified in Electromagnetic Compatibility Directive
89/336/EEC as amended by Directive 92/ 31/EEC of 28 April 1992 and
Directive 93/68/EEC of 22 July 1993.

Seagate uses an independent laboratory to confirm compliance with the
EC directives specified in the previous paragraph. Drives are tested in
representative end-user systems using 80486, Pentium and PowerPC
microprocessors. Although CE-marked Seagate drives comply with the
directives when used in t he test systems, we cannot guarant ee that all
systems will comply with the directives. The drive is designed for opera­tion inside a properly designed enclosure, with properly shielded I/O
cable (if necessary) and terminators on all unused I/O ports. The com­puter manufacturer or system integrator should confirm EMC compliance
and provide CE marking for their products.

16 Marathon 2130sl and 1420sl Product Manual

1.11.3 FCC verification

These drives are intended to be contained solely within a personal
computer or similar enclosure, not attached as an external devi ce. As
such, each drive is considered t o be a subassembly even when it is
individually marketed to the customer. As a subassembly, no Federal
Communications Commission verification or certification of the device is
required.

Seagate Technology, Inc . has tested this devic e in enclosures as de­scribed above to ensure that the total assembly (enclosure, disc drive,
motherboard, power supply, etc.) complies with the limits for a Class B
computing device, pursuant to Subpart J, Part 15 of the FCC rules.
Operation with noncertified assemblies is likely t o result in interference
to radio and television reception.

Radio and Television Interference.

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.

This equipment is 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 on and off, try one or more
of the following corrective measures:

• Reorient the receiving antenna.

• Move the device to one side or the other of the radio or TV.

• Move the device farther away from the radio or TV.

• Plug the computer into a different outlet so that the receiver and

computer are on different branch outlets.

If necessary, you should consult y our dealer or an e xperienced radio/telev ision
technician for addit ional suggestio ns. You may find t he following bo oklet from
the Federal Communications Commission helpful:

solve Radio-Telev isio n Int erfer enc e P ro blem s

the Superintend ent of Documen ts, U.S. Gover nment Printing Office, Wash­ington, DC 20402. Refer to publication number 004-000-00345-4.

This equipment generates and

How to Identify and Re-

. This book let is ava ilable from

Marathon 2130sl and 1420sl Product Manual 17

2.0 Drive mounting and configuration

2.1 Handling and sta tic -d isch ar ge pr ecau ti on s

After unpacking, and before installati on, the drive may be exposed to
potential handling and ESD hazards. You must observe standard static­discharge precautions. A grounded wrist-strap is recommended.

Handle the drive only by the sides of the head/disc assembly. Avoid
contact with the printed circuit board, all electronic components and the
interface connector. Do not apply pressure to the top cover. Always rest
the drive on a padded antistatic surface until you mount it in the host
system.

2.2 Jumper settings

2.2.1 Master/slave configuration

You must establish a master/slave relationship between two drives that are
attached to a single AT bus. You can configure a drive to become a master
or slave by setting the master/slave jumpers, as described below and shown
in Figure 2 on page 18.

Alternatively, you can configure the drive as a master or slave using the
cable-select option. This requires a special daisy-chain cable that
grounds pin 28 (CSEL) on one of its two drive connectors. If you attach
the drive to the grounded CSEL c onnec tor, it becomes a master. If you
attach the drive to the ungrounded CSEL connector, it becomes a slave.
To use this option, the host system and both drives must support cable­select and both drives must be configured for cable-select.

For the master drive to recognize the slave drive using t he DASP– signal,
the slave drive must assert the DASP– signal at power up, and the master
drive must monitor DASP– at power up.

18 Marathon 2130sl and 1420sl Product Manual

Master/slave
configuration
jumpers

B D
A C

Pin 1

Pin 20 removed

for keying

Circuit board

Drive is master; slave drive may be detected using DASP– signal.
CSEL is ignored.

Drive is slave (a master drive should be present also).
CSEL is ignored.

Use CSEL pin grounding to differentiate master from slave.

Figure 2. Connector and master/slave jumper setup

Marathon 2130sl and 1420sl Product Manual 19

2.3 Remote LED configuration

The drive indicates activity to the host through the DASP– line (pin 39)
on the ATA interface. This line may be connected to a drive status
indicator driving an LED at 5V. The line has a 30 mA nominal current
limit. Most external LEDs, however, are sufficiently bright at 15 mA.
Because the LED drops 1.7 volts, we recommend that you place a
200-ohm resistor in series with the LED to limit the current to 15 mA.

2.4 Drive mountin g

You can mount the drive in any orientation using four screws in the four
side-mounting or four bottom-mounting holes. Allow a mi nimum clear­ance of 0.030 inches (0.76 mm) around the entire perimeter of the drive
for cooling. The drive conforms to the industry-standard SFF-8200
mounting specifications and requires the use of SFF-8200-c ompatible
connectors in direct-mounting applications. See Figures 3 and 4 on
pages 20 and 21 for drive mounting dimensions.

Caution.

Caution.

This drive needs sufficient airflow so that the maximum surface
temperatu re at the cen ter of the top c ov er of the drive does not
exceed 62 degrees C (144 degrees F).

mounting

To avoid damaging the drive, use M3X0.5

screws

0.118 inches (2.99 mm) into side holes or 0.098 inches
(2.49 mm) into bottom mounting holes. Do not overti ghten
the screws (maximum torque: 3 inch-lb).

. Do not insert mounting screws more than

only

metr ic

20 Marathon 2130sl and 1420sl Product Manual

A40

A39

A6

(to tips of I/O connector pins)

A1 +A2 –A3

A23

A25

A24

Z

A37
X2

A26 thread, 4PLC
min A38 full thread
center within A27 of
position specified

A37

X1

A21 ± A22

Y

A31

A30
A7

A28

X

A37
Z2

A37
Z1

A4 ± A5

(width at

mounting

holes)

A32 thread, 4PLC
min A41 full thread
center within A33 of
position specified

A37
Z4

A37
Z3

A8

Figure 3. Drive mounting dimensions—side and bot tom vi ew

(for dimension speci ficat ions, see table on pages 21 and 22).

A29

zxy

Marathon 2130sl and 1420sl Product Manual 21

Pin 44

Pin 20 removed
for keying

Pin 1

A34

Z

A35

A36

X

A19

Detail

A9

A11

Z

A10

A10.1

±

X

Figure 4. Drive mounting dimensions—end view

Dim. Description inches mm

A1 Dri ve height 0.499 12.70
A2 + tolerance on drive height 0 .0 08 0.20
A3 – tolerance on drive height 0.008 0.20
A4 Drive width at mounting ho les 2.750 69.85
A5 + and – tolerance on driv e width at moun ting holes 0.010 0.25
A6 Maximum drive length (includes connector pins) 3.974 100.94
A7 Front-to-back connector loc at ion 0.403 10.2
A8 Allowable range, fron t-t o-b ack connector location 0.039 1.00
A9 Top-to-botto m co nnector location, pin cen te r lin e 0.157 3.99
A10 Side-to-side connector loca tion, pin center line 0.399 10.14
A10.1 + and – tolerance, side-to-side connector location 0.015 0.38
A1 1 Top- t o-b ot to m pin spacing 0.079 2.00
A12 Side-to-side pin spaci ng 0.079 2.00
A13 Pin si de-to-side dimension 0.020 0.50
A14 + and – tolerance on pin side-to-side di me nsion 0.002 0.05
A15 Allowable range, side-to-s ide connector location 0.0 30 0.75

(for dimension speci ficat ions, see table below).

Mounting dime nsion speci fications

A12

A13

± A14

A20

A17

± A18

+A2 –A3

M

zx

M

A1

A15

A16

M

zx

M

continued

22 Marathon 2130sl and 1420sl Product Manual

continued from pr evious page

Mounting dime nsion speci fications

Dim. Description inches mm

A16 Allowable range, side-to-side, pins within connector 0.003 0.08
A17 Pin top-to-bottom dimension 0.020 0.50
A18 + and – tolerance on pin top-to-bottom di m ension 0.002 0.05
A19 Allowable range, top-to-bottom connector location 0.020 0.50
A20 Allowable range, top-to-bottom , pins i n connector 0.003 0.08
A21 Connecto r pin length 0.152 3.86
A22 + and – tolerance on pin length 0.008 0.20
A23 Side mounting-hole height 0.118 3.00
A24 Front-to-back location of side m ount ing holes 0.551 14.0
A25 Front-to-back distance bet ween si de mounting

holes
A26 Thread description, side mount i ng holes N/A M3
A27 Diameter of cyl. into which hol e cen te r m ust fall 0.020 0.50
A28 Distance between side of drive and center of

nearest bottom m ount ing holes (on pin-44 side)
A29 Side-to-side distance betwe en bott om mo unt i ng

holes
A30 Front-to-back location of bott om mou nt ing hol es 0.551 14.0
A31 Front-to-back distance bet ween bottom mounting

holes
A32 Thread description, bot to m mounting holes N/A M 3
A33 Diameter of cyl. into which hol e center must fall 0.020 0.50
A34 Min. vertical clearance for ma ting connector 0.039 1.00
A35 Max. side-to-side distance f ro m pin- 44 edge of

HDA near I/O connector to st art of cl ear ance for

mating connect or
A36 Min. side-to-side clearanc e from pin-4 4 edge o f

I/O connecto r to any object interruptin g

clearance of mating connector
A37 Diameter of datum targets and ref ere nce ar eas 0.315 8.00
A38 Min. thread depth, side mounti ng holes 0.118 3.00
A39 Min. pin centerline to chamfer abov e connector 0.049 1.25
A40 Min. chamfer above connect or 0.010 0.25
A41 Min. thread depth, bottom mounting holes 0.098 2.50

3.016 76.6

0.160 4.06

2.430 61.72

3.016 76.6

0.315 8.00

2.370 60.20

Marathon 2130sl and 1420sl Product Manual 23

2.5 ATA interface connector

The drive connector is a 44-conductor connector with 2 rows of 22 male
pins on 0.079-inch (2 mm) centers (see Figure 4 on page 21 and Figure

5). The mating cable connector is a 44-conductor, nonshielded connector
with 2 rows of 22 female contacts on 0.079-inch (2 mm) centers. The
connectors should provide strain relief and should be keyed with a plug
in place of pin 20.

These drives are designed to support the industry-standard SFF-8200
mounting specifications. When installing these drives in fixed mounting
applications, use only SFF-compatible connectors, such as Molex part
number 87368-442
printed circuit cables (P CCs), use Molex part number 87259-4413 or
equivalent to connect the drive to the system. Select a connector that
provides adequate clearance for the master/slave configuration jumpers
if the applicat ion requires the use of s uch jumpers. The ATA i nterface
cable should be no more than 18 inches long.

Per SFF 8004 specifications, the I/O connector pins may extend

Note.

up to 0.015 inches beyond the edge of the head/disc assembly.

. For applications that involve flexible cables or

x

Master/slave jumpers

1.654 (42.01)

0.158 ± 0.003 (4.00 ± 0.08)

Dimensions are in inches (mm)

Figure 5. ATA interface connector dimensions (non -SFF dimen si on, for

reference only)

24 Marathon 2130sl and 1420sl Product Manual

Marathon 2130sl and 1420sl Product Manual 25

3.0 ATA Attachment-3 Interface (ATA-3)

The drives in this manual comply with the ATA-3 Standard, proposed by
the National Committee for Information Technology Standardization
(NCITS)–T13. For more information about the committee and the stand­ards, contact the following sources:

• NCTIS internet home page: http://www.x3.org

• NCTI S E-mail address: [e-mail]

• NCTIS FTP site: ftp://fission.dt.wdc.com/pub/standards/X3T13

(for standards and working documents)

On the date of this publication, X3T13/2008D, Revision 7b, dated

Note.

27 January 1997, was the latest available revision of Information
Technology—AT Attachment-3 Interface (ATA-3).

3.1 ATA interface signals and connector pins

Figure 6 on page 26 summarizes the signals on the ATA interface
connector that the drive supports. For a detailed description of these
signals, refer t o the

Standa
ment-3 Interface (ATA-3).

rd X3T13

Working Draft of the Proposed American National

/2008D Revision

7b

, Information Technology AT Attach-

3.1.1 AT bus signal levels

Signals that the drive sends have the following output characteristics at
the drive connector:

Logic Low 0.0V to 0.4V
Logic High 2.5V to 5.25V

Signals that the drive receives must have t he following input charac­teristics, measured at the drive connector:

Logic Low 0.0V to 0.8V
Logic High 2.0V to 5.25V

26 Marathon 2130sl and 1420sl Product Manual

Drive pin #

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

Pins 28, 34 and 39 are used for master-slave communication (details shown below).

28
34
39

Signal name

–

Reset
Ground

DD7
DD8
DD6
DD9
DD5

DD10

DD4

DD11

DD3

DD12

DD2

DD13

DD1

DD14

DD0

DD15

Ground

(removed)

DMARQ

Ground

–

DIOW
Ground

–

DIOR
Ground
IORDY

CSEL

–

DMACK

Ground
INTRQ

–

IOCS16

DA1

–

PDIAG

DA0
DA2

–

CS1FX

–

CS3FX

–

DASP
Ground

Power
Power

Ground

Reserved

Drive 0 (master)Drive 1 (slave)

28
34
39

Host pin # and signal description

1

Host Reset

2

Ground

3

Host Data Bus Bit 7

4

Host Data Bus Bit 8

5

Host Data Bus Bit 6

6

Host Data Bus Bit 9

7

Host Data Bus Bit 5

8

Host Data Bus Bit 10

9

Host Data Bus Bit 4

10

Host Data Bus Bit 11

11

Host Data Bus Bit 3

12

Host Data Bus Bit 12

13

Host Data Bus Bit 2

14

Host Data Bus Bit 13

15

Host Data Bus Bit 1

16

Host Data Bus Bit 14

17

Host Data Bus Bit 0

18

Host Data Bus Bit 15

19

Ground
(No Pin)

20
21

DMA Request

22

Ground

23

Host I/O Write

24

Ground

25

Host I/O Read

26

Ground

27

I/O Channel Ready

28

Cable Select pin

29

DMA Acknowledge

30

Ground

31

Host Interrupt Request

32

Host 16 Bit I/O

33

Host Address Bus Bit 1

34

Passed Diagnostics

35

Host Address Bus Bit 0

36

Host Address Bus Bit 2

37

Host Chip Select 0

38

Host Chip Select 1

39

Drive Active / Slave Present

40

Ground

41

+5 volts DC (logic)

42

+5 volts DC (motor)

43

Ground for power pins

44

Reserved

Host

CSEL

PDIAG

DASP–

–

28
34
39

Figure 6. I/O pins and suppor ted ATA signal s

Marathon 2130sl and 1420sl Product Manual 27

3.2 ATA Interface commands

3.2.1 Supported ATA commands

The following table lists supported ATA-standard dr ive commands. For
a detailed description of the ATA commands, refer to the

ATA-3 Standard.

See Section 3.2.4 on page 34 for details and subcom-

mands used in the S.M.A.R.T. implementation.

Draft Proposed

Command name

ATA-standard commands

Execute Drive Diagnostics
Format Track
Identify Drive
Initialize Drive Parameters
NOP
Read Buffer
Read DMA (w/retry)
Read DMA (no retry)
Read Long (w/retry)
Read Long (no retry)
Read Multiple
Read Sectors (w/retry)
Read Sectors (no retry)

Command

code

90

H

50

H

EC

H

91

H

00

H

E4

H

C8

H

C9

H

22

H

23

H

C4

H

20

H

21

H

Supported by

Marathon 2130sl and

Marathon 1420sl

Yes
Yes
Yes
Yes

No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

Read Verify Sectors (w/retry)
Read Verify Sectors (no retry)
Recalibrate
Seek
Set Features
Set Multiple Mode

continued

40
41
10

70
EF
C6

H
H
H
H

H
H

Yes
Yes
Yes
Yes
Yes
Yes

28 Marathon 2130sl and 1420sl Product Manual

continued from pr evious page

Command name

Execute S.M.A.R.T. Command
Write Buffer
Write DMA (w/retry)
Write DMA (no retry)
Write Long (w/retry)
Write Long (no retry)
Write Multiple
Write Same
Write Sectors (w/retry)
Write Sectors (no retry)
Write Verify

Drive Security commands

Security Set Password
Security Unlock

Command

code

B0

H

E8

H

CA

H

CB

H

32

H

33

H

C5

H

E9

H

30

H

31

H

3C

H

F1

H

F2

H

Supported by

Marathon 2130sl and

Marathon 1420sl

Yes
Yes
Yes
Yes
Yes
Yes
Yes

No
Yes
Yes

No

Yes
Yes

Security Erase Prepare
Security Erase Unit
Security Freeze Lock
Security Disable Password

Power-management commands

Check Power Mode
Idle
Idle Immediate
Sleep
Standby
Standby Immediate

98
97
95
99
96
94

F3
F4
F5
F6

or E5

H

or E3

H

or E1

H

or E6

H

or E2

H

or E0

H

H
H
H
H

H
H
H
H
H
H

Yes
Yes
Yes
Yes

Yes
Yes
Yes
Yes
Yes
Yes

Marathon 2130sl and 1420sl Product Manual 29

The following commands contain drive-specific features that may not be
described in the

Draft Proposed ATA-3 Standard

.

3.2.2 Identify Drive comman d

The Identify Drive command (command code ECH) transfers information
about the drive to the host after power up. The data is organi zed as a
single 512-byte block of data, the contents of which are shown in the
table below. All reserved bits or words should be set to zero. Parameters
listed with an “
Section 1 of this manual for default parameter settings for the Marathon
2130sl and 1420sl.

Word Description Contents

0

1

” are drive-specific or vary with the state of the drive. See

x

Configuration information:
Bit 6: fixed drive

Number of fixed cylinders (default logical
emulation):

4,191 (ST92130AG)

2,794 (ST91420AG)

0040

105F

0AEA

H

H

H

2
3
4

5
6

7–9

10–19

20
21
22

23–26

continued

ATA-reserved
Number of heads (default logical emulation):

16
ATA-obsolete
ATA-obsolete
Number of sectors per track

(default logical emulation): 63
ATA-reserved
Serial number:

(20 ASCII characters, 0000

= none)

H

ATA-obsolete
ATA-obsolete
Number of ECC bytes available (16)
Firmware revision (8 ASCII character string):

= ROM version, ss = RAM version,

xx

= RAM version

tt

0000
0010
0000

0000
003F
0000

ASCII

0000
0000
0010

xx.ss.tt

H

H

H
H

H

H

H
H
H

30 Marathon 2130sl and 1420sl Product Manual

continued from pr evious page

Word Description Contents

ST92130AG
or
ST91420AG

0010

H

0000

H

27–46

47
48

Drive model number: (40 ASCII characters,
padded with blanks to end of string)

Maximum sectors per interrupt on read/write
multiple

Reserved
Standby timer values supported per ATA

49

standard, IORDY supported, IORDY can be

2C00

H

disabled

50

ATA-reserved

0000

H

51
52

53

54

55

56

57–58

59

60–61

62
63

64

65

PIO data-transfer cycle timing mode
DMA transfer cycle timing mode (not used)
Validity of words 54–58 and words 64–70

(words may be valid)
Number of cylinders

(current emulation mode)
Number of heads

(current emulation mode)
Number of sectors per track

(current emulation mode)
Number of sectors (current emulation mode)
Number of sectors transferred during a Read

Multiple or Write Multiple command
LBA sectors available:

4,224,878 (ST92130AG)

2,816,352 (ST91420AG)
ATA-obsolete
Multiword DMA active/modes supported

(see note following)
Advanced PIO modes supported (modes 3

and 4 supported)
Minimum multiword DMA transfer cycle time

per word (120 nsec)

0200

H

0000

H

0003

H

xxxx

H

xxxx

H

xxxx

H

xxxx

H

01

xx

H

776E 0040
F960 002A

0000

H

0x07

H

0003

H

0078

H

H
H

Marathon 2130sl and 1420sl Product Manual 31

Word Description Contents

Recommended multiword DMA transfer

66

67

68

69–127

cycle time per word (120 nsec)
Minimum PIO cycle time without IORDY flow

control (363 nsec)
Minimum PIO cycle time with IORDY flow

control (120 nsec)
ATA-reserved

0078

016B

0078
0000

H

H

H

H

128–159
160–255

Note.

Seagate-reserved
ATA-reserved

The f ollowing DMA mode settings are used in word 63 of the

Identify Drive command:

Word Bit Description (if bit is set to 1)

63 0
63 1
63 2
63 8
63 9
63 10

Multiword DMA mode 0 available
Multiword DMA mode 1 available
Multiword DMA mode 2 available
Multiword DMA mode 0 currently active
Multiword DMA mode 1 currently active
Multiword DMA mode 2 currently active

xxxx

0000

H

H

32 Marathon 2130sl and 1420sl Product Manual

3.2.3 Set Features command

This command controls the implementation of various features that the
drive supports. When the drive receives this command, it sets BSY,
checks the contents of the Features regist er, clears BSY and generates
an interrupt. If the value in the register does not represent a feature that
the drive supports, the command is aborted. Power-on default has the
read look-ahead and write caching features enabled and 4 bytes of ECC.
The acceptable values for the Features register are defined as follows:

Obsolete

01

H

Enable write cache

02

H

03HSet transfer mode (based on value in Sector Count register)

Sector Count register values:

Set PIO mode to default (PIO Mode 2), enable IORDY

00

H

Set PIO mode to default (PIO Mode 2), disable IORDY

01

H

PIO Mode 0

08

H

PIO Mode 1

09

H

PIO Mode 2

0A

H

0BH PIO Mode 3

PIO Mode 4

0C

H

Obsolete

10

H

Obsolete

11

H

Obsolete

12

H

Multiword DMA Mode 0

20

H

Multiword DMA Mode 1

21

H

Multiword DMA Mode 2

22

H

Enable auto-read reassignment

04

H

33HNot implemented
44

Sixteen bytes of ECC apply on read long and write long

H

commands

54HNot implemented

Disable read look-ahead (read cache) feature

55

H

Disable reverting to power-on defaults

66

H

Not implemented

77

H

81

Obsolete

H

Disable write cache

82

H

Not implemented

84

H

Not implemented

88

H

(default)

(default)

(default)

Marathon 2130sl and 1420sl Product Manual 33

99HNot implemented

Not implemented

9A

H

Enable read look-ahead (read cache) feature

AA

H

(default)

ABHNot implemented

4 bytes of ECC apply on read long and write long commands

BB

H

(default)

CCHEnable reverting to power-on defaults

(default)

At power-on or after a hardware reset, the default values of the features
are as indicated above. A software reset also changes the features to
default values unless a 66

command has been received.

H

34 Marathon 2130sl and 1420sl Product Manual

3.2.4 S.M.A.R.T. commands

Self-Monitoring, Analysis and Reporting Technology (S.M.A .R.T.) is an
emerging technology that provides near-term failure predicti on for disc
drives. When S.M.A.R.T. is enabled, the Seagate drive monitors prede­termined drive attributes that are susceptible to degradation over time. If
a failure is likely to occur, S.M.A.R.T. makes a status report available so
that the host can prompt the user to back up data on the drive. Not all
failures are predictable. S.M.A.R.T. predictabi lity is limit ed to the attrib­utes the drive can monitor. For more information on S.M.A.R.T. com­mands and implementation, refer to Section 3 of NCITS-T13 publication,
Information Technology AT Attachment-3 Interface (ATA-3), Revision 7b
or later.

These drives are shipped with S.M.A.R.T. featur es disabled. You must
have a recent BIOS or software package that supports S .M.A.R.T. to
enable the feature. The table below shows the S.M.A.R.T. command
codes that these drives use.

Before executing a S.M.A.R.T. command by writing B0

to the Command

H

Register, the host must do the following:

• Write the value 4FH to Cylinder_Low register.

• Write the value C2

to the Cylinder_High register.

H

• Writ e the appropriate S.M.A.R.T. code to the Features register, as
shown in the table below:

Code in
Features
Register S.M.A.R.T. Command

D8

H

D9

H

DA

H

If an appropriat e c ode is not written to the F eatures r egis ter, the

Note.

Enable S.M.A.R.T. Operations Yes
Disable S.M.A.R.T. Operations Yes
Return S.M.A.R.T. Status Yes

command will be aborted and 0

04 (abort) will be wr itten to the

x

Supported by
Marathon 2130sl and
Marathon 1420sl

Error register.

Marathon 2130sl and 1420sl Product Manual 35

3.2.5 Drive-Securi ty com ma nd s

The drive-security commands provide a password-based security sys­tem to prevent unauthorized access to a disc drive.

During manufacturing, the master password, SEAGATE, is set for the
drive, and the lock function is disabled. The system manufacturer or
dealer may set a new master password using the Security Set Password
command (F1
password is entered, the drive rejects all security commands except
Security Set Pass wo rd.

When you set a passwor d, th e drive aut omat ica lly enters lock mo de (lock
mode is enabled) the next time it is powered on. When lock mode is enabled,
the drive rejects all media-access commands until you enter the correct user
password, completing a Security Unlock command.

The drive supports two l evels of security: high sec urity and maximum
security. In high-security mode, if you forget your password, you can still
access the data by entering the master password. In maximum security
mode, if you forget your password, you cannot access the data. However,
in maximum security mode, you can erase all data on the drive and
reinitialize the drive using the Erase Unit command (F4
the master password to complete an Erase Unit command.

), without enabling the lock function. Before a user

H

). You must enter

H

The Freeze Lock command (F5H) prevents you from changing security
features. If, during normal drive operation, the Freeze Lock command is
executed, all normal drive commands are implemented, but the security
commands Disable Password, E rase Unit, Set Password and Unlock ,
cannot be completed.

See the ATA-3 specification (Document X3T13/2008D) for additional
details on the drive-security commands.

36 Marathon 2130sl and 1420sl Product Manual

Marathon 2130sl and 1420sl Product Manual 37

Appendix. Compatibility notes

ECC testing

When a Marathon 2130sl or Marathon 1420sl performs hardware-based
ECC error correction on-the-fly, the drive does not report an ECC error.
This allows ECC correction without degrading drive performance. Some
older drive diagnostic programs test ECC features by creating small data
errors and then checking to see if they are reported. Such tests, when
run on these drives, may incorrectly report an ECC detection failure
because the drive hardware corrects the data automatically, avoiding the
error rather than reporting it. Such a report does not indicate a drive
malfunction.

Seagate Technology, Inc.
920 Disc Drive, Scotts Valley, California 95066, USA

Publicatio n Number: 20401053-001, Rev. A, P rinted in USA