ST-9051A

                                      +- 44-pin I/O Connector (* see below)
                                      |                     o o
                                    ::::::::::::.::::::::1  o o
                               -P-W-A-----------+------------------
                                                |           | |
       pin-20 removed for keying ---------------+           | |
                                                            | |
                                                            | |
 Drive is Master, no Slave drive present ------------------ 0 0
 Drive is Master, Seagate Slave drive present ------------- 1 0
 Drive is Slave to another ST9051A/ST9077A Master --------- 0 1
 Reserved Position (Do Not Use) --------------------------- 1 1

 * Drive uses +5vdc power supplied to the drive
   via the interface connector. The drive does
   NOT make use of a +12vdc power line.
   pin-41  +5vdc (Logic)
   pin-42  +5vdc (Motor)
   pin-43  Ground
   pin-44  Reserved

                            ST-9051A

       UNFORMATTED CAPACITY (MB) ________________N/A
       FORMATTED CAPACITY (32 SECTORS) (MB) _____42.8
       ACTUATOR TYPE ____________________________STRAIGHT ARM
       TRACKS ___________________________________2,616
       CYLINDERS __PHYSICAL______________________654
       HEADS ______PHYSICAL______________________4
       DISCS (2.5 in) ___________________________2
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________RLL (2,7)
       TRANSFER RATE INTERNAL (mbytes/sec)_______1.25
       SPINDLE SPEED (RPM) ______________________3,631
       AVERAGE LATENCY (mSEC) ___________________8.26
       BUFFER ___________________________________32 KByte SeaCache
       INTERFACE ________________________________AT BUS
       SECTORS PER DRIVE ________________________83,712
       TPI (TRACKS PER INCH) ____________________1,750

       BPI (BITS PER INCH) ______________________34,007
       AVERAGE ACCESS (ms) ______________________<19
       SINGLE TRACK SEEK (ms) ___________________6
       MAX FULL SEEK (ms) _______________________36
       MTBF (power-on hours) ____________________150,000
       POWER REQUIREMENTS: +5V START-UP (amps) __1.0
       POWER MANAGEMENT (Watts):
                           ACTIVE _______________1.7
                           IDLE _________________0.8
                           STANDBY ______________0.3
                           SLEEP ________________0.3
       WRITE PRECOMP (cyl) ______________________N/A
       REDUCED WRITE CURRENT (cyl) ______________N/A
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________*

       Physical:
                        Height (inches/mm):     0.75/19.05
                        Width  (inches/mm):     2.76/70.10
                        Depth  (inches/mm):     4.01/101.85
                        Weight   (oz/kg):       6.5/0.18

 * 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:   820 cyl, 6 heads, 17 sectors = 42,823,680
Possible translation:   654 cyl, 4 heads, 32 sectors = 42,860,544

Note: A "custom" or "user-definded" 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.

Seagate reserves the right to change, without notice, product
offerings or specifications. (9/25/91)


Copyright © 1985 to 2022 Beta Systems                            Last modified: Wednesday, January 05, 2022 .