Seagate ST12550N Barracuda 2 HARD DISK DRIVE REPAIR, Seagate ST12550N Barracuda 2 HARD DISK DRIVE SPECIFICATIONS,
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Seagate ST12550N Barracuda 2 Hard Disk Drive Repair, Seagate ST12550N Barracuda 2 Hard Disk Drive Specifications, Seagate ST12550N Barracuda 2 Seagate ST12550N
Specifications



seagate st12550n picture.
seagate st12550n picture.
seagate st12550n picture.

Seagate ST12550N Barracuda 2 Specifications
Model Capacity Size Height Bus Type Int.Type
ST12550N Barracuda 2 2139MB 3.5" HHT SCSI2 Fast

Barracuda 2   :    ST12550N
Barracuda 2

Capacity: 
Speed: 
Average Read Time: 
 

2.14 GB
7200 rpm
8 ms


ST-12550N SCSI-2 Fast (Barracuda 2)

 �����������ͻ               J01����Ŀ  1Ŀ �������J4-1�������������Ŀ
 � REAR VIEW �              (see    1�� �"�                          �
 �����������ͼ               below) ��� �"�                          �
                                        �"�J4 1-11                   �
 Terminating ResistorsĿ                �"�(see detail below)        �
         ������Ŀ ����ijĿ              �"�                          �
(TOP)    �������1 �������1              �"��J4-11�                   �
      ���������������������������/���������\     �                   �
     ͵::::::::::::::::::::::::1Ƴ 0 0 0 0 ��    �                   �
      ����������������������ͳ�����5�G�G�12�     �               5   1
 50 pin I/O Cable Connection��                   : : : : : : : : : : :
                                                 � � � � � � � � 6 � 2
                              SCSI ID = 0 (none) � � � � � � � � � � �
                              SCSI ID = 4 �������� � � � � � � � � � �
                              SCSI ID = 2 ���������� � � � � � � � � �
                              SCSI ID = 1 ������������ � � � � � � � �
                        Reserved (default OFF) ��������� � � � � � � �
                        Parity Disable ������������������� � � � � � �
                        Enable Motor Start ����������������� � � � � �
                        Delay Motor Start (10 sec * ID) ������ � � � �
                        Write Protect Enable ������������������� � � �
                        Remote LED Connector ��������������������� � �
                         [pin-5 cathode (neg), pin-6 anode (pos)]  � �
                        Reserved (default OFF) ��������������������� �
                        Spindle Synch Cable Connector ����������������
                          (pin-1 SSREF, pin-2 ground)

��������������������������������Ŀ
� J01 - Terminator Power Jumpers ������������������Ŀ
����������������������������������                  �
            Terminator power from the drive.       �1�2� *
              (default)                            ����
                                                    � �
            Terminator power from pin 26 on the      �ķ *
              SCSI bus.                             ��
                                                    ���

            Terminator power to the SCSI bus on     �ķ
              pin 26.                               ���
                                                    ���

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

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


                            ST-12550N


       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) _______4 Async
       EXTERNAL TRANSFER RATE (mbyte/sec) _______10 Sync
       SPINDLE SPEED (RPM) ______________________7,200
       AVERAGE LATENCY (mSEC) ___________________4.17
       BUFFER ___________________________________1024 KByte
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________SCSI-2 FAST
                                                 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. (09/18/96)

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