Seagate ST118273LW Barracuda 18 HARD DISK DRIVE REPAIR, Seagate ST118273LW Barracuda 18 HARD DISK DRIVE SPECIFICATIONS,
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Seagate ST118273LW Barracuda 18 Hard Disk Drive Repair, Seagate ST118273LW Barracuda 18 Hard Disk Drive Specifications, Seagate ST118273LW Barracuda 18 Seagate ST118273LW Barracuda 18
Specifications



seagate st118273lw barracuda 18 picture.
seagate st118273lw barracuda 18 picture.
seagate st118273lw barracuda 18 picture.

Seagate ST118273LW Barracuda 18 Specifications
Model Capacity Size Height Bus Type Int.Type
ST118273LW Barracuda 18 18.2GB 3.5" HHT SCSI3 W/LV

Barracuda 18   :    ST118273LW
Barracuda 18

Capacity: 
Speed: 
Average Read Time: 
 

18.21 GB
7200 rpm
7.9 ms




ST-118273W Ultra SCSI Wide (Barracuda 18)
ST-118273LW Ultra2 SCSI Wide (Barracuda 18, LVD)

  �����������ͻ
  � REAR VIEW �  (ST-118273W/LW/WD only)
  �����������ͼ
        (TOP)                  J5 Auxiliary
          ___________________  ���  �1�/���������\
        �( �����������������1)ͳ::::::�� 0 0 0 0 ��
          \�����������ij����/  �  �� 2���5�G�G�12�
       68 pin I/O Cable�        ������
       Connection Male          ������   SCSI ID = 0 (none)
                                �������� SCSI ID = 1
                   pin-11 +5v ��ٳ������ SCSI ID = 2
                   pin-10 GND ���ٳ����� SCSI ID = 4
                                  ������ SCSI ID = 8
      pins 9 & 12 no connection   ������� or pin-8 Activity LED*

* These pins are driven low for 250ms after PWR ON and RESET
  to allow jumper selectable SCSI ID as shown above.


  �����������ͻ
  � REAR VIEW �  (ST-118273WC/DC only)
  �����������ͼ
                     80 pin I/O and DC Power Wall/bracket Connection
                     �  Female
    J1          /���ij���������������\      TOP (HDA)
     ����������/ �������������������� \����������
              (\�1������������������40/)    BOTTOM

     Notes on 80 pin I/O connector:
       pins  1 -  4 = +12v        41 - 44 = 12v GND
            34 - 36 = +5v         74 - 76 = 5v GND
                 37 = SYNC             77 = LEDC
                 38 = MTRON            78 = DLYDST
                 39 = SCSIA0           79 = SCSIA1
                 40 = SCSIA2           80 = SCSIA3

  Mating connector: AMP US p/n: 2-557103-1 straight-in, Male 80-pin
                                2-557101-1 right angle to PCB


  �����������ͻ
  � SIDE VIEW �  (ST-118273W/WD/LW/WC/DC/LC)
  �����������ͼ

    FRONT    TOP (HDA)    J2  87654321              �͸
     OF ���������������������������������P�W�A�����͵J1 Cable
    DRIVE    BOTTOM           ::::::::              �;
                              ��������
 Enable T-Res (W model only) Ĵ�������� Terminator Power�
 Force Single-ended (LC, LW, �ٳ������� Terminator Powerÿ
  LVD models only)             �������� Reserved         �
  Start Delay (12 secs * ID) ��ٳ������ Parity Disable   �
                 Motor Start ���������� Write Protect    �
    ��������������������������������Ŀ                   �
    � Termination Power-source Table ���������������������
    �������������������������������������������������Ŀ
    �            �����....�����....����PWA edge������ �
    �                         2 1      2 1     2 1    �
    � A Drive Supplies Bus     �ķ    �ķ             �
    � B Drive Supplies Own    ��    ���    ����   �
    � C Bus Supplies Drive    ���    ���    ����   �
    � A+B is valid             A        B       C     �
    ���������������������������������Default�����������
     (option A only on WD, or LW models)

    Note: WD, DC, LW and LC drives do not have internal terminators
          or any other way of adding internal terminators to the
          drive; use external active termination if required.
          Use active (ANSI SCSI-2 Alternative 2) terminators
          when terminating the bus.  Use active negation
          terminators when terminating a SCSI Ultra2 bus
          operating in Low Voltage Differential (LVD) mode.



  ������������ͻ
  � FRONT VIEW �  (ST-118273W/WD/LW/WC/DC/LC)
  ������������ͼ
                                ��ĴReserved. Shipped with cover installed.
                                �  �Do not remove. Do not install jumpers.
                    TOP (HDA)  ����͸     1
   ��P�W�A��������������������͵::::�::::::���
               *    BOTTOM     ����;�����2
               �               J6    ������
          LED ��                     ������
                          Remote LED ٳ���� ID 1
                         (pin-11 +5v) ����� ID 2
                            Reserved �ٳ��� ID 4
                      (pin-10 ground)  ���� ID 8


                            ST-118273W


       UNFORMATTED CAPACITY (GB) ________________
       FORMATTED CAPACITY (GB) __________________18.21
       AVERAGE SECTORS PER TRACK ________________237 rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________150,020
       CYLINDERS ________________________________7,501 user
       HEADS ______PHYSICAL______________________20
       DISCS (3.5 in) ___________________________10
       MEDIA TYPE _______________________________THIN FILM/MR
       RECORDING METHOD _________________________EPR4 16/17
       INTERNAL TRANSFER RATE (mbits/sec)________120 to 190
       EXTERNAL TRANSFER RATE (mbyte/sec) _______40 Sync
            Low Voltage Differential(LVD) _______80 Sync
       SPINDLE SPEED (RPM) ______________________7,200
       AVERAGE LATENCY (mSEC) ___________________4.17
       BUFFER (/optional) _______________________512KB/2MB
              (LVD models /optional) ____________1MB/4MB
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________Ultra-SCSI Wide
              Low Voltage Differential __________Ultra2-SCSI Wide
              ASA II, SCAM level 2 (1 default)
       BYTES PER TRACK (avg unformatted) ________155,000
       SECTORS PER DRIVE ________________________35,566,480
       TPI (TRACKS PER INCH) ____________________8250
       BPI (KBITS PER INCH) _____________________180
       AVERAGE ACCESS (ms read/write)____________7.9/8.7
         Drive level with controller overhead
       SINGLE TRACK SEEK (ms read/write) ________1.1/1.4
       MAX FULL SEEK (ms read/write) ____________16/18
       MTBF (power-on hours) ____________________1,000,000
       SHOCK (G's, 11/2 ms):
                operating (Read/Write) __________5
                abnormal ________________________10
                nonoperating ____________________50/135
       ACOUSTICS (Bels typical, sound power) ____4.2
       POWER DISSIPATION (watts/BTUs) Active ____20.85/71.2
                                      Idle ______13.35/45.6
       POWER REQUIREMENTS: +12V START-UP (amps) _2.8
                           +12V TYPICAL (amps) __0.8 idle
                           +5V START-UP (amps) __1.2
                           +5V TYPICAL (amps) ___0.75 idle
                           IDLE (watts) _________13
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE

       Physical:
                        Height (inches/mm):     1.62/41.1
                        Width  (inches/mm):     4.00/101.6
                        Depth  (inches/mm):     5.75/146.1
                        Weight    (lbs/kg):      2.2/0.99

Already low-level formatted at the factory with x spare sectors
per cylinder and x spare cylinder per unit.

ZBR = Zone Bit Recording = Variable sectors per track

Seagate reserves the right to change, without notice, product 
offerings or specifications. (01/14/99)

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