==========================================================================
                      MAXTOR 7120A/AT IDE DRIVE
==========================================================================
                                                                        
SPECIFICATIONS:

Formatted:                 130.4 Million bytes
Embedded Controller:       AT or SCSI
Number of Disks:           2
Data Surfaces:             4
Data Heads:                4
Servo:                     Embedded
Tracks per Surface:        1,156
Track Density (average):   1,800 tpi
Track capacity (formatted) 21,504
Bytes per Block:           512
Blocks per drive:          254,688
Sectors per track:         42 physical

PERFORMANCE (Typical):

Seek times* (ms)
     Track to track:       4
     Average:              15
     Maximum:              30

Average latency (ms)       8.55
Rotation speed             3,524 RPM
Controller overhead        1 ms

Data transfer rate (Mbytes per sec)
     To/from media         1.5
     To/from buffer (AT)   6.0
     To/from buffer (SCSI) 5 (sync) 3 (async)

Start time/power up (0 - 3,524 RPM)
     Typical               3 sec
     Maximum               10 sec

Start/stop cycles:         20,000 min

Interleave:                1:1

Buffer Size:               64K

Interface:                 AT or SCSI

Recording Method:          1,7 RLL

Recording density - ID:    34,087 bpi

Flux density - ID (flux reversals per inch):  25,565


POWER REQUIREMENTS (Typical):

MODE        +12V DC +8%         +5V DC +5%          POWER
----            -----------         ----------          -----

Spin-up         1 A Avg Peak        150 mA Avg Peak     10.2W Peak
R/W             280 mA              290 mA              4.8W
Idle            120 mA              70  mA              1.8W 
Standby         10  mA              90  mA              0.7W
Sleep           0   mA              20  mA              0.1W

Physical:
        Height:  1.00"  (2.54 cm)
        Length:  5.75"  (14.61 cm)
        Width:   4.00"  (10.16 cm)
        Weight:  1.2 lbs. (.57 kg)


ENVIRONMENTAL:

Temperature
        Operating:         5 degrees C to 50 degrees C
        Non-operating:    -40 degrees C to 65 degrees C
        Thermal gradient:  20 degrees C per hour max

Humidity
        Operating:         8% to 80% non-condensing
        Non-operating:     8% to 80% non-condensing
        Maximum wet bulb:  26 degrees C

Altitude (Relative to sea level)
        Operating         -200 to 10,000 feet
        Non-operating      40,000 feet max


RELIABILITY & MAINTENANCE:

MTBF:    150,000 hours (POH),predicted at 35 degrees C)
MTTR:    30 minutes typical
Preventive maintenance:  None
Component Design Life:   5 years (minimum)

Data Reliability
         Hard read errors  13^10 per 10-13 bits read

Shock and Vibration
         Shock measured at half-sine pulse.  Vibration measured at swept sine,
         1 octave per minute.

         Non-operating shock:       70Gs,  1ms
         Operating shock:           10 Gs, 11ms (without non-recoverable errors)

         Non-operating vibration:   5 - 11 Hz  0.320" (double amplitude)
                                    11 - 300 Hz  2G's, 11 ms (without non-
                                    recoverable errors)

         Operating vibration:       5 - 11 Hz  0.160" (double amplitude)
                                    11 - 300 Hz  1 G peak amplitude

Acoustic Noise
                                    42dBa max. at 1 meter        

===========================================================================

  MAXTOR 7060A/7120A JUMPER DESIGNATIONS (PCBA =<48xx)
                                      |J20|J18|J17|J13|J11|
+-------------------------------------+---+---+---+---+---|
| Master/Slave                        |   |   |   |   |   |
|  Only drive or Master drive*        | J |   |   |   |   |
|  Slave in dual drive system         | O |   |   |   |   |
+-------------------------------------+---+---+---+---+---|
| ECC Bytes                           |   |   |   |   |   |
|  4 Bytes*                           |   | J |   |   |   |
|  7 Bytes                            |   | O |   |   |   |
+-------------------------------------+---+---+---+---+---|
| Drive Model Number                  |   |   |   |   |   |
|  7060A                              |   |   | O |   |   |
|  7120A                              |   |   | J |   |   |
+-------------------------------------+---+---+---+---+---|
| Default Config @ Power Up           |   |   |   |   |   |
|           Cyls  Hds  Sec  MBytes    |   |   |   |   |   |
|  -----------------------------------+---+---+---+---+---|
|  7060A     936   8   17*   65.1     |   |   |   | J |   |
|           1024   7   17    62.3     |   |   |   | O |   |
|  -----------------------------------+---+---+---+---+---|
|  7120A     936  16   17*  130.3     |   |   |   | J |   |
|           1024  14   17   124.7     |   |   |   | O |   |
+-------------------------------------+---+---+---+---+---|
| I/O Channel Ready                   |   |   |   |   |   |
|  Disabled*                          |   |   |   |   | O |
|  Enabled                            |   |   |   |   | J |
+---------------------------------------------------------+
  J=Jumpered O=Open *=Default
                                              +---+       |
                                              |o o|J11    |
                              J20 J18 J16     |o o|J13    |
                             +-+---+---+-+    |o o|J14    |
                             | | o | | o |    |o o|J15    |
                             | | o | | o |    +---+       |
                             +---+---+---+                |
                                J19 J17                   |
                           -------------------------------+           

 Maxtor "New" 7040A/7120A Jumper Designation And Parameters
                     PCBA # =<48xx

===========================================================================

               7060A/7120A JUMPER DESIGNATIONS (PCBA =<38xx)
                                      |J20|J19|J18|J17|J16|J15|J14|J13|J11|
+-------------------------------------+---+---+---+---+---+---+---+---+---|
| Master/Slave                        |   |   |   |   |   |   |   |   |   |
|  Only drive in single drive system* | J | J |   |   |   |   |   |   |   |
|  Master in dual drive system        | J | O |   |   |   |   |   |   |   |
|  Slave in dual drive system         | O | J |   |   |   |   |   |   |   |
+-------------------------------------+---+---+---+---+---+---+---+---+---|
| ECC Bytes                           |   |   |   |   |   |   |   |   |   |
|  4 Bytes*                           |   |   | J |   |   |   |   |   |   |
|  7 Bytes                            |   |   | O |   |   |   |   |   |   |
+-------------------------------------+---+---+---+---+---+---+---+---+---|
| Drive Model Number                  |   |   |   |   |   |   |   |   |   |
|  7060A                              |   |   |   | O |   |   |   |   |   |
|  7120A                              |   |   |   | J |   |   |   |   |   |
+-------------------------------------+---+---+---+---+---+---+---+---+---|
| Idle Mode Latch                     |   |   |   |   |   |   |   |   |   |
|  Option Disabled*                   |   |   |   |   | O |   |   |   |   |
|  Option Enabled                     |   |   |   |   | J |   |   |   |   |
+-------------------------------------+---+---+---+---+---+---+---+---+---|
| Reserved for Factory                |   |   |   |   |   |   |   |   |   |
|  Normal Operation*                  |   |   |   |   |   | O |   |   |   |
|  Factory Test Mode                  |   |   |   |   |   | J |   |   |   |
+-------------------------------------+---+---+---+---+---+---+---+---+---|
| Default Config @ Power Up           |   |   |   |   |   |   |   |   |   |
|           Cyls  Hds  Sec  MBytes    |   |   |   |   |   |   |   |   |   |
|  -----------------------------------+---+---+---+---+---+---+---+---+---|
|  7060A    1024   7   17*   62.3     |   |   |   | O |   |   | O | O |   |
|            925   8   17    60.7     |   |   |   | O |   |   | O | J |   |
|            762   8   39    60.8     |   |   |   | O |   |   | J | O |   |
|            467  16   17    65.0     |   |   |   | O |   |   | J | J |   |
|  -----------------------------------+---+---+---+---+---+---+---+---+---|
|  7120A    1024  14   17*  124.7     |   |   |   | J |   |   | O | O |   |
|            900  15   17   117.5     |   |   |   | J |   |   | O | J |   |
|            762  16   17   121.7     |   |   |   | J |   |   | J | O |   |
|            936  16   17   130.3     |   |   |   | J |   |   | J | J |   |
+-------------------------------------+---+---+---+---+---+---+---+---+---|
| I/O Channel Ready                   |   |   |   |   |   |   |   |   |   |
|  Disabled*                          |   |   |   |   |   |   |   |   | O |
|  Enabled                            |   |   |   |   |   |   |   |   | J |
+-------------------------------------------------------------------------+
  J=Jumpered O=Open *=Default
                                                              +---+       |
                                                              |o o|J11    |
                                              J20 J18 J16     |o o|J13    |
                                             +-+---+---+-+    |o o|J14    |
                                             | | | | | o |    |o o|J15    |
                                             | | | | | o |    +---+       |
                                             +---+---+---+                |
                                                J19 J17                   |
                                           -------------------------------+

         Maxtor "Old" 7040A/7120A Jumper Designation And Parameters
                               PCBA # =<38xx

===========================================================================

              7060A & 7120A are trademarks of Maxtor Corporation.
                AT is a registered trademark of IBM Corporation.
               Specifications subject to change without notice.
                     Copyright 1992-97 Maxtor Corporation.
                        Rev E     4/21/97    Anderson

