Seagate ST1090a HARD DISK DRIVE REPAIR, Seagate ST1090a HARD DISK DRIVE SPECIFICATIONS,
Seagate ST1090a hard disk drive sales, Seagate ST1090a hard disk drive repair, Seagate ST1090a hard disk drive specifications, 
Seagate ST1090a Hard Disk Drive Repair, Seagate ST1090a Hard Disk Drive Specifications, Seagate ST1090a Seagate ST1090A
Specifications



seagate st1090a picture.
seagate st1090a picture.
seagate st1090a picture.

Seagate ST1090A Specifications
Model Capacity Size Height Bus Type Int.Type
ST1090A 79MB 3.5" HHT IDE AT

Swift AT   :    ST1090A
Swift AT

Capacity: 
Speed: 
Average Read Time: 
 Cylinders: 
Heads: 
Sectors: 

79.0 MB
3600 rpm
15 ms
536
10
29






ST-1090A (94354-090) Swift AT (IDE)
     ����\
     � O �  5
     � O �  G                                          �Ŀ  Some have
     � O �  G       AT (IDE) Cable                     � �� these pins
     � O � 12  1�........................�   o o o o o(o o)   6 off
     ����/       ........................    o o o o o(o o)   7 off
    �������������������������������������������������������
                                             1 2 3 4 5 6 7
         ON                 OFF              � � � � � ���
    1   Slave              Master          ��� � � � �  �
    2   5 Heads            7/9 Heads       ����� � � �  �
    3   Slave installed    Slave not inst. ������� � �  �
    4   7 byte ECC         4 byte ECC      ��������� �  �
    5   Factory test       Normal Oper.    �����������  �
    6/7 Some PWA's have these pins, factory use  ��������

                           ST-1090A
                         94354-90 Swift

       UNFORMATTED CAPACITY (MB) ________________90
       FORMATTED CAPACITY (29 SECTORS) (MB) _____79
       ACTUATOR TYPE ____________________________VOICE COIL
       TRACKS ___________________________________5,360
       CYLINDERS ________________________________1,072
       HEADS ____________________________________5
       DISCS ____________________________________3
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________RLL
       TRANSFER RATE (mbytes/sec) _______________1
       SPINDLE SPEED (RPM) ______________________3,600
       BUFFER ___________________________________32 or 64 Kbyte
         Read Look-Ahead, Non-Adaptive,
         Single-Segmented Buffer
       INTERFACE ________________________________AT BUS
       TPI (TRACKS PER INCH) ____________________1,350
       BPI (BITS PER INCH) ______________________22,638
       AVERAGE ACCESS (ms) ______________________15
       SINGLE TRACK SEEK (ms) ___________________4
       MTBF (power-on hours) ____________________150,000
       POWER REQUIREMENTS: +12V START-UP (amps) _2.5
                           +12V TYPICAL (amps) __0.7
                           +5V START-UP (amps) __0.75
                           +5V TYPICAL (amps) ___0.4
                           TYPICAL (watts) ______11
                           MAXIMUM (watts) ______33.75
       BUFFERED STEP PULSE RATE (micro sec) _____6-200
       WRITE PRECOMP (cyl) ______________________N/A
       REDUCED WRITE CURRENT (cyl) ______________N/A
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________*

 * MAY REQUIRE FORMATTING AND PARTITIONING SOFTWARE.  ALSO, CHECK TO
SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE
AVAILABLE. (see below)

Possible translation:   536 cyl, 10 heads, 29 sectors = 79,585,280
Possible translation:   335 cyl, 16 heads, 29 sectors = 79,585,280
Possible translation:   653 cyl, 14 heads, 17 sectors = 79,571,968
Possible translation:   854 cyl,  7 heads, 26 sectors = 79,579,136

Note: A "custom" or "user-defined" CMOS drivetype  may ask for a
numerical value for the Write Precompensation cylinder and for the
Landing Zone cylinder.  A basic rule-of-thumb for drive models that do
not require the old Write Precomp technique or a Landing Zone because
they are Auto-Parking is to add 1 to the cylinder value being used. As
an example: If cylinders equaled 820, then both Write Precomp and
Landing Zone would be entered as 821. Some BIOS will convert this to
65535 or -1, which are functionally equivalent to "none (not used)".

PHYSICAL/LOGICAL equivalent to NATIVE/TRANSLATION

Already low-level formatted at the factory.

Since a user-definable or custom translation geometry may be used, it
is imperative that the values be written down and kept with your
permanent records for retrieval in the event of CMOS battery failure.


                          Swift Remote LED Option

               Front View of Drive Without the Plastic Bezel

                                  �������Ŀ
                                  � A � B �    B = Anode
                                  �������Ĵ    D = Cathode
                                  � C � D �
              ...�������������������������������P�W�A���...


        � Default jumper at C-D for LED mounted on drive PWA
        � To use remote LED, remove jumper and extend B (Anode)
          and D (Cathode).
        � Swift LED kit 75912397 allows connection to a remote LED
        � Swift LED kit 95913369 has an LED for attachment to the
          system front bezel or a 5.25-inch frame kit

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offerings or specifications.

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