Seagate ST12550W Barracuda 2 HARD DISK DRIVE REPAIR, Seagate ST12550W Barracuda 2 HARD DISK DRIVE SPECIFICATIONS,
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Seagate ST12550W Barracuda 2 Hard Disk Drive Repair, Seagate ST12550W Barracuda 2 Hard Disk Drive Specifications, Seagate ST12550W Barracuda 2 Seagate ST12550W
Specifications



seagate st12550w picture.
seagate st12550w picture.
seagate st12550w picture.

Seagate ST12550W Barracuda 2 Specifications
Model Capacity Size Height Bus Type Int.Type
ST12550W Barracuda 2 2139MB 3.5" HHT SCSI2 W

Barracuda 2   :    ST12550W
Barracuda 2

Capacity: 
Speed: 
Average Read Time: 
 

2.14 GB
7200 rpm
8 ms



ST-12550W SCSI-2 Fast Wide (Barracuda 2) (aka ST-12551N)

                                        J01����Ŀ
                                       (see    1��
�����������ͻ                           below) ���
� REAR VIEW �                                  1Ŀ ��������J4-1���Ŀ
�����������ͼ                                  �"�                 |
                                               �"�J4 1-6           �
                                               �"�(see below)      |
                                               �"��J4-6�Ŀ         �
        (TOP)                    J5            �"�-J4-7� |         |
          ___________________  ���  �1�/���������\     | |         |
        �( �����������������1)ͳ::::::�� 0 0 0 0 ��    � �         �
          \�����������ij����/  �  ��  ���5�G�G�12�     � �         1
       68 pin I/O Cable�        ������                 : : : : : : :
       Connection               ������                 � � � � � � 2
                                ������  Reserved ������� � � � � � �
Spindle Synch Cable Connector ��ٳ����   (some drives do � � � � � �
  (pin-11 SSREF, pin-12 ground)  �����    not have this  � � � � � �
Remote LED Connector ������������ٳ���    #7 jumper)     � � � � � �
 [pin-9 cathode (neg),            ����  Enable Drive ����� � � � � �
  pin-10 anode (pos)]             ����   Terminators       � � � � �
                                  ����  Reserved ����������� � � � �
SCSI ID = 8 ����������������������ٳ��   (default OFF)       � � � �
SCSI ID = 4 �����������������������ٳ�  Parity Disable ������� � � �
SCSI ID = 2 ������������������������ٳ  Enable Motor Start ����� � �
SCSI ID = 1 ��������������������������  Delay Motor Start �������� �
SCSI ID = 0 (none)                       (10 sec * ID)             �
                                        Write Protect Enable �������
��������������������������������Ŀ
� J01 - Terminator Power Jumpers ������������������Ŀ
����������������������������������                  �
            Terminator power from the drive.       �1�ķ *
              (default)                            ����
                                                    � �
            Terminator power from the                �ķ *
              SCSI bus.                             ��
                                                    ���

            Terminator power to the SCSI bus        �ķ  
                                                    ���
                                                    ���

            Terminator power to the SCSI bus and    ���ķ*
              drive.                                ���
                                                    ����
            * Valid for single-ended drives only.


    Note: ST-12550WD (differential model) does not come with any
          provision to use Termination resistors.  Therefore, SCSI bus
          needs to be externally terminated.


                            ST-12550W


       UNFORMATTED CAPACITY (MB) ________________2572
       FORMATTED CAPACITY (xx SECTORS) (MB) _____2139
       AVERAGE SECTORS PER TRACK ________________81 rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________51,433
       CYLINDERS ________________________________2,707 user
       HEADS ______PHYSICAL______________________19
       DISCS (3.5 in) ___________________________10
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________ZBR RLL (1,7)
       INTERNAL TRANSFER RATE (mbits/sec)________34.3 to 56.5
       EXTERNAL TRANSFER RATE (mbyte/sec) _______20 Sync
       SPINDLE SPEED (RPM) ______________________7,200
       AVERAGE LATENCY (mSEC) ___________________4.17
       BUFFER __W/WD_____________________________1024/512 KByte
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________SCSI-2 FAST WIDE
                                                 ASA
       BYTES PER TRACK __________________________49,768 average
       SECTORS PER DRIVE ________________________4,177,781
       TPI (TRACKS PER INCH) ____________________3,047
       BPI (BITS PER INCH) ______________________52,187
       AVERAGE ACCESS (ms) (read/write)__________8.0/9.0
         Drive level without controller overhead
       SINGLE TRACK SEEK (ms) ___________________0.6/0.9
       MAX FULL SEEK (ms) _______________________17/19
       MTBF (power-on hours) ____________________500,000
       POWER DISSIPATION (watts/BTUs) Active ____16/55
                                      Idle ______15/51
       POWER REQUIREMENTS: +12V START-UP (amps) _2.18
                           +12V TYPICAL (amps) __0.83 idle
                           +5V START-UP (amps) __1.0
                           +5V TYPICAL (amps) ___0.76 idle
                           IDLE (watts) _________13
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE

       Physical:
                        Height (inches/mm):     1.63/41.4
                        Width  (inches/mm):     4.00/101.6
                        Depth  (inches/mm):     5.97/151.6
                        Weight    (lbs/kg):     2.3/1.04

Already low-level formatted at the factory with 9 spare sectors
per cylinder and 1 spare cylinder per unit.

ZBR = Zone Bit Recording = Variable sectors per track

Seagate reserves the right to change, without notice, product 
offerings or specifications. (02/05/98)

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