AOH :: Hard Disks :: 25128A.TXT

AOH :: 25128A.TXT
Maxtor 25128A IDE Hard Disk Docs and Specs


===============================================================================
                           MAXTOR 25128A IDE DRIVE
===============================================================================

KEY FEATURES:
  * 15ms average seek                             * 32K on-board cache  
  * Ultra-low power consumption                   * >250,000 hour MTBF
  * 1:1 interleave                                * Automatic actuator lock 
  * Single-sided surface mount PCBA               * 100 Gs shock resistance
  * Embedded AT controller                        * High data transfer rate
  * Automatic error detection & correction

SPECIFICATIONS:
Formatted: ................................. 128,235,520 bytes
Embedded Controller: ....................... AT 
Actuator type: ............................. Rotary Voice Coil
Number of Disks: ........................... 2
Data Surfaces: ............................. 4
Data Heads: ................................ 4
Servo: ..................................... Embedded
Tracks per surface: ........................ 1,092
Track Density (average): ................... 2,550 tpi
Bytes per Block: ........................... 512
Data Zones: ................................ 4
Sectors per track: ......................... 30-60

PERFORMANCE (Typical):

Seek times* (ms)
     Track to track: ....................... 3
     Average: .............................. 15 
     Maximum: .............................. 27

Average latency (ms) ....................... 8.4
Rotation speed ............................. 3,551 RPM
Controller overhead ........................ 1 ms

Data transfer rate (Mbytes per sec)
     To/from media ......................... 1.19-2.29
     To/from buffer (AT) ................... 8.0

Start time / power up (0-3,551 RPM)
     Typical ............................... ѓ5 sec

Stop time / power down
     Typical ............................... ѓ3 sec
Start/stop cycles .......................... 40,000 typical
Interleave: ................................ 1:1
Buffer Size: ............................... 32K
Interface: ................................. AT 
Recording Method: .......................... 1,7 RLL
Recording Density (Kbpi) ................... 39-46
Flux Density (Kfci) ........................ 29-34

Power Requirements (Typical):

    Mode             +5VDC ё5%        Power
    Spin-up           970mA Avg Peak
    R/W               440mA            2.2W
    Idle              220mA            1.1W
    Standby / Sleep    40mA            0.2W

Physical:

    Height:  0.69" (17.5 mm)
    Length:  4.00" (101.6 mm)
    Width:   2.75" (69.84 mm)
    Weight:  0.374 lbs.(170 gm)

Environmental:

Temperature 
    Operating .............................. 5јC to 55јC
    Non-operating .......................... -40јC to 60јC
    Thermal gradient ....................... 20јC per hour max

Humidity
    Operating .............................. 5% to 90% non-condensing
    Non-operating .......................... 5% to 90% non-condensing

Altitude (relative to sea level)
    Operating .............................. -200 to 10,000 feet
    Non-operating .......................... 40,000 feet max
    
Reliability and Maintenance:

MTBF ....................................... >250,000 hours 
                                             (POH, predicted at 35 degrees C)
Preventative Maintenance ................... None
Component design life ...................... 5 years (minimum)
Data reliability
     Hard read errors ...................... <10 non-recoverable 
                                              per 10 to the 14th bits read
Shock & Vibration (typical)
          Shock measured at half-sine pulse. Vibration 
          measured at swept sine, 1 octave per minute
    Operating shock ........................ 100 Gs, 11ms 1/2 sine wave
    Non-operating shock .................... 10 Gs, 11ms  1/2 sine wave 
    Non-operating Vibration 
     5-20 Hz ............................... .245" (double amplitude)
     20 - 500 Hz ........................... 5 Gs peak amplitude
    Operating Vibration
     5-20 Hz ............................... .049" (double amplitude)
     20 - 300 Hz ........................... 1 Gs peak amplitude
Acoustic Noise
    34 dBA at 1 meter (typical) in idle (spinning) on-track mode.

  *  The average of 10,000 random seek times (measured on independent
     test equipment) constitutes the average seek time specification.
========================================================================

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         Г                ЩЭЭЭЭЭЭЭЭЭЭЭЭЭЭЛ                 ЭЮЭЭГ
         Г                К  кФФФФФП     К                 ЭЮЭЭГ
         Г                К  Г 0 0 ГJ304 К    кФФФП        ЭЮЭЭГ
         Г                К  Г 0 0 ГJ305 К    Г   Г         ЬЭЭГ
         Г                К  Г 0 0 ГJ306 К    РФФФй        ЭЮЭЭГ
         Г                К  Г ллл ГJ308 К      кФФП       ЭЮЭЭГ
         Г                К  Г 0 0 ГJ309 К      Г::Г       ЭЮЭЭГ
         Г                К  Г 0 0 ГJ307 ЧФФФФФ>Г;;Г       ЭЮЭЭГ
         Г                К  РФФФФФй     К      Г::Г        К  Г
         Г                ШЭЭЭЭЭЭЭЭЭЭЭЭЭЭМ      РФФй       ЭЮЭЭГ
         Г              кФП                     кФП        ЭЮЭЭГ
         РФФФФФФФФФФФФФФСФСФФФФФФФФФФФФФФФФФФФФФСФСФФФФФФФФФФФФй

                                           J306 J307 J308 J309
    ФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФТФФФФТФФФФТФФФФТФФФФП
     Master/Slave                          Г    Г    Г    Г    Г
        Only Drive in single drive system* Г    Г    Г J  Г    Г
        Master in dual drive system        Г    Г    Г J  Г    Г
        Slave in dual drive system         Г    Г    Г O  Г    Г
    ФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФХФФФФХФФФФХФФФФХФФФФД
     Reserved for factory                  Г    Г    Г    Г    Г
       Normal operation*                   Г    Г O  Г    Г O  Г
       Factory operation                   Г    Г J  Г    Г J  Г
    ФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФХФФФФХФФФФХФФФФХФФФФД
     Idle Mode Latch                       Г    Г    Г    Г    Г
      Option Disabled*                     Г O  Г    Г    Г    Г
      Option Enabled                       Г J  Г    Г    Г    Г
   ФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФФСФФФФСФФФФСФФФФСФФФФй
    *=Default J=Jumped O=Open
    J304 & J305 reserved for future use

     CMOS Configuration:     Cyls  Hds  Write  Landing Sec/Trk
                                       PreComp  Zone
     122.3MB Capacity        ---------------------------------
     (128 Million Bytes)      981   10     0       0       17


           2585A and 25128A are trademarks of Maxtor Corporation.
              AT is a registered trademark of IBM Corporation.
              Specifications subject to change without notice.
                     Copyright 1992 Maxtor Corporation.
==============================================================================
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