Seagate MARATHON 1680 User manual

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .
Marathon 2250
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .
Marathon 1680
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .
ATA Interface Drives
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .
Product Manual
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .
Marathon 2250 (ST92255AG)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .
Marathon 1680 (ST91685AG)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .
ATA Interface Drives
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .
Product Manual
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .

1997 Seagate Technology, Inc. All rights reserved
Publication Number: 36337-101, Rev. B, March 1997
Seagate, Seagate Technology and the Seagate logo are registered
trademarks of Seagate Technology, Inc. Marathon and SafeRite are
trademarks of Seagate Technology. Other product names are registered
trademarks or trademarks of their owners.
Seagate reserves the right to change, without notice, product offerings
or specifications. No part of this publication may be reproduced in any
form without written permission from Seagate Technology, Inc.

Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 CHS translation geometries . . . . . . . . 5
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 . . . . . . . . . . . . . . . . . . . . 9
1.7.4 Voltage tolerance . . . . . . . . . . . . . . . . . . . . 10
1.7.5 Power-management modes . . . . . . . . . . . . . . 10
1.8 Environmental tolerances . . . . . . . . . . . . . . . . . . 12
1.8.1 Ambient temperature . . . . . . . . . . . . . . . . . . 12
1.8.2 Temperature gradient . . . . . . . . . . . . . . . . . 12
1.8.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . 12
1.8.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.8.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.8.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . 13
1.9 Drive acoustics . . . . . . . . . . . . . . . . . . . . . . . 14
1.10 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.11 Agency certification . . . . . . . . . . . . . . . . . . . . 15
1.11.1 Safety certification . . . . . . . . . . . . . . . . . . 15
Marathon 2250 and Marathon 1680 Product Manual iii

1.11.2 Electromagnetic Compatibility . . . . . . . . . . . . 15
1.11.3 FCC verification . . . . . . . . . . . . . . . . . . . . 15
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
iv Marathon 2250 and Marathon 1680 Product Manual

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
Marathon 2250 and Marathon 1680 Product Manual v

vi Marathon 2250 and Marathon 1680 Product Manual

Introduction
The Marathon 2250 (ST92255AG) and Marathon 1680 (ST91685AG)
provide very high storage capacity in a small, 17-mm hard disc drive.
Key Features:
•Low power consumption
•Compact, SFF-8200-compatible form-factor
•High rotational speed for fast internal data transfer
•Quiet operation
•SafeRiteshock protection
•Support for PIO modes 0, 1, 2, 3 and 4, as well as single-word and
multiword DMA modes 0, 1 and 2
•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
•Fast caching and on-the-fly error-correction algorithms
•Fast microprocessor for low command overhead
•Support for S.M.A.R.T. drive monitoring and reporting
•Support for drive password security
•Support for Read/Write Multiple commands
•Support for autodetection of master/slave drives using cable-select
(CSEL) and DASP– signals
Marathon 2250 and Marathon 1680 Product Manual 1

Specification summary table
The specifications listed in this table are for quick reference. For details
on a specificationmeasurement ordefinition, seethe appropriatesection
of this manual.
Drive Specification Marathon
2250 Marathon 1680
Guaranteed Mbytes (1 Mbyte=106bytes) 2,250 1,680
Guaranteed sectors (LBAmode) 4,394,940 3,282,490
Bytes per sector 512
Default sectors per track 63 63
Default read/write heads 16 16
Default cylinders 4,360 3,256
Physical read/write heads 10 8
Discs 5 4
Recording density (bits/inch, max) 120,000
Track density (tracks/inch) 5,555
Areal density (Mbits/inch2) 666
Spindle speed (RPM) 4,508
Internal data-transfer rate (Mbits/sec max) 60.8
I/O data-transfer rate (Mbytes/sec max) 16.6
ATAdata-transfer modes supported PIO modes 0, 1, 2, 3, 4 and
multiword DMAmodes 0, 1, 2
Cache buffer (Kbytes) 103
Height (mm max) 17.2
Width (mm max) 70.1
Length (mm max) 100.45
Weight (grams typical) 204 200
Track-to-track seek time (msec typical) 4 (read), 5 (write)
Average seek time (msec typical) 12 (read), 14 (write)
Full-stroke seek time (msec max) 26 (read), 28 (write)
Average latency (msec) 6.65
2 Marathon 2250 and Marathon 1680 Product Manual