Hard Drive: MAXTOR: 7120AI (IBM) 130MB 3.5"/SL IDE / AT

7 1 2 0 A I   ( I B M )    MAXTOR
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders        |     |     |
Capacity form/unform   130/      MB        Heads           4|     |     |
Seek time   / track  15.0/ 4.0 ms          Sector/track   42|     |     |
Controller           IDE / AT              Precompensation
Cache/Buffer            64 KB              Landing Zone
Data transfer rate    1.500 MB/S int       Bytes/Sector      512
                      6.000 MB/S ext
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 50    |    -40 65
Power: sleep          0.1 W     Humidity     %         8 80    |      8 80
       standby        0.7 W     Altitude    km    -0.061  3.048|        12.192
       idle           1.8 W     Shock        g        10       |     70
       seek               W     Rotation   RPM      3524
       read/write     4.8 W     Acoustic   dBA        42
       spin-up       10.2 W     ECC        Bit
                                MTBF         h     150000
                                Warranty Month
Lift/Lock/Park     YES          Certificates

Layout

MAXTOR 7120AI QUICK REFERENCE GUIDE

  +---------------------------------------------------------+
  |                                           +-+-+-+-+     |
  |                                           +++++++++     |
  |                                        J11-+ |J14+--J15 |XX
  |                                        J13---+    +-+   |XX
  |                                                   +-+J16|XX
  |                                                   +-+J17|XX
  |                                                   +-+J18|XX J3
  |                                                   +-+J19|XX
  |                                                   +-+J20|XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |X1
  |                                                         |
  |                                                         |X1 J2
  |                                                         |XX
  +---------------------------------------------------------+

Jumpers

MAXTOR 7120AI QUICK REFERENCE GUIDE

Jumper Setting
==============

The 7000AI series drives, were manufactured specifically for "I"BM.
IBM had the jumpers changed on the early models to fit their
specifications. Part of IBM's spec. was that the drive be "CAM spec",
therefore J19 is used only as a spare jumper.

At some point IBM changed their mind and started using these drives
just the way we normally make them. BUT, we don't have ANY info on
what TLAs go with what drives. So try it both ways. To the best of
my knowledge all other AI drives, 7213AI, 7170AI, etc. are jumped
"normally":

Master/Slave
------------
Only drive in single drive system J20 OPEN J19 CLOSED
Master in dual drive system OPEN CLOSED
Slave in dual drive system CLOSED OPEN

ECC Bytes
---------
4 Bytes* J18 CLOSED
7 Bytes OPEN

Drive Model Number
------------------
7060A J17 OPEN
7120A* CLOSED

Idle Mode Latch
---------------
Option Disabled* J16 OPEN
936 x 16 x 17 CHS Auto-Detect Setting CLOSED

Reserved for Factory
--------------------
Normal Operation* J15 OPEN
Disables ECC test CLOSED

Install

MAXTOR 7120A/7060A PRODUCT MANUAL PART #1194 REVISION B

Notes of Installation
=====================

Automatic Headpark and Lock Operation
-------------------------------------
Immediately following power-down, dynamic braking of the spinning
disks delays momentarily and lets the heads move to an inner
mechanical stop. A small fixed magnet holds the heads in place as the
disk spin down. The heads are released only when power is again
applied.

Dual Drive Support
------------------
Two drives may be accessed via a common interface cable, using the
same range of I/O addresses. A jumper on J20 designates the drive as
a master. When J20 is not jumpered, the drive is a slave. Whether a
drive is a master or slave determines the function of pin 28, DASP-,
for that drive. DASP- (Drive Active Slave Present) is a time-multi-
plexed signal that serves as an input on the master and an output on
the slave. At power on, the master allows a time period for the slave
to set the DASP- line. If the slave fails to do so, the master
assumes it is the only drive in the system. After DASP- has been set,
or after the master's input period has expired, the DASP- line is
used as a drive active line and is set when the host accesses either
drive.

All Task File registers are written in parallel to both drives. The
interface processor on each drive decides whether a command written
to it should be executed; this depends on the type of command and
which drive is selected. Only the drive selected executes the command
and activates the data bus in response to host I/O reads; the drive
not selected remains inactive.

A master/slave relationship exists between the two drives: drive 0 is
the master, and drive 1, the slave. In response to the Execute
Diagnostics command, both drives execute diagnostics. The slave re-
ports its status with its own, and then reports to the host.

Drive Type
----------
7000 Series drives incorporate a dynamic configuration algorithm.
Within limits of the drive's capacity, the algorithm lets the host
configure CMOS to any DOS Legal ATA translation.

Cooling
-------
The cabinet cooling must be designed by the customer so that the
ambient temperatures measured 0,5" above the PCBA and top cover
surfaces do not exceed temperature specifications listed in this
describtion.

Power Connector
---------------
Power is applied through J2, a 4-pin connector (Molex P/N 1-480424-0;
AMP P/N 1-480424-0).

Never force poloarited connectors into place.

Features

MAXTOR 7120A/7060A PRODUCT MANUAL PART #1194 REVISION B

Introduction
------------
Maxtor 7000 Series AT disk drives are 1" high, 3.5" random access
storage devices which incorporate an on-board AT controller. Maxtor
engineers have applied recent advances in hard drive technology to
the design and manufacture of these drives. Reduced size and in-
creased durability make them especially well-suited to notebook,
laptop, and desktop applications.

Defect and Error Management
---------------------------
7000 Series drives employ a "push-down" defect management routine.
The drive organizes physical sectors into a logical string. If a
defective sector is found, it is skipped, and the entire logical
string is shifted down by one. Reserved sectors beyond the end of the
logical string prevent any loss of capacity or performance.

Any defective sectors are recorded while the drive is still at the
factory and the resulting list loads into SRAM during power on.

In the event of a data error, Error Correction Code (ECC) allow data
recovery even when several bits of the original data have been lost.

SRAM Buffer
-----------
The 3 major areas of SRAM (Static Random Access Memory) include:
defect management, a read buffer, and a write buffer.

Drive defects load into SRAM from the reserved history cylinder and
are referenced for every read, write, and seek operation. Each defect
causes all remaining logical data sectors to be shifted down by one.
Since the defect list is in SRAM, the drive can quickly determine the
logical offset to locate a desired sector.

The large read buffer and smaller write buffer optimize data through-
put for both fast and slow host systems.

Data Reliability
----------------
Reliability specifications require a proper implementation of the
host/drive interface, including correct interface timings, power
supply voltages, environmentsl conditions, and data handling circuits
in the host system. General error rate computations exclude any
errors caused by factory-located defects or host system failures.
Specified error rates are based on the assumptions that

1. the drive operates within DC power requirements, and

 2. any errors caused by media defects or host system failures are
    excluded from error rate computations.

Seek Time
---------

                                          | 7000   |
        ----------------------------------+--------+
        Track-to-Track         msec. typ. |   3    |
        1/3 Stroke             msec.      |  16    |
                       Average msec. typ. |  15    |
                       Average msec. max. |  27    |
        Latency                msec. avg. |   8.5  |
        ----------------------------------+--------+

Reliability and Maintenance
---------------------------
MTBF 150,000 POH (power-on-hours)
AFR (Annualized Failure Rate) 1.7%
Component design life 5 years minimum

Magnetic Field
--------------
The externally induced magnetic flux density may not exceed 6 gauss
as measured at the disk surface.

Basic Installation Steps
------------------------
Install a 40-pin ribbon cable connector. The striped edge of this
cable represents pin 1 and must be oriented towards pin 1 at the
drive connector and at the host connector.

Install a DC power connector.

Secure the drive in a drive bay with 6-32 x 1/4" screws.

If the AT BIOS supports a user-programmable drive type, select and
programm the drive parameters that will give the highest available
capacity.

If the AT VIOS does not supports user-programmable drive types,
choose one of the drive's translation paaarameters that matches a
standard drive type in BIOS.

The drive is now ready for partioning and high-level formatting with
any operating system.