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                         SEAGATE TECHNOLOGY, INC.
                              1-800-SEAGATE
                          http://www.seagate.com
                            (C)opyright 1996

ST-32531A, Medalist 2531 AT

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  º REAR VIEW º
  ÈÍÍÍÍÍÍÍÍÍÍͼ

                   J2  40 pin I/O Cable Connection
                   ³
        ÕÍÍÍÍÍÍÍÍÍ  ÍÍÍÍÍÍÍÍÍÑÍÍÍÍÍ1Í/ÄÄÄÄÄÄÄÄÄ\    TOP (HDA)
       ͵::::::::::ú::::::::1³ : : : ³ 0 0 0 0 ³ÍÍ
        ÔÍÍÍÍÍÍÍÍÍͳÍÍÍÍÍÍÍÍÍÏͳͳͳÍÀÄ5ÄGÄGÄ12Ù    BOTTOM
                   ³           ³ ³ ³
   pin-20 removed ÄÙ           ³ ³ ÀÄÄ Reserved
                               ³ ÃÄÄÄÄ Slave Present (when Master ON)
                               ³ ÀÄÄÄÄ Cable Select (when Slave OFF)
              2o o             ÀÄÄÄÄÄÄ Master ON, Slave OFF
              1o o
               ³ ³
               ³ ÀÄÄ Full capacity (as shipped)
               ÀÄÄÄÄ Limit capacity to 2.1 Gbytes (4092 cylinders)

   Limit Capacity jumper sets the default cylinder translation
to 4092 to solve issues with certain BIOS that only auto-detect.  
Total available sectors are still at full capacity as reported via 
Identify Drive data words 52 - 61.  Third party partitioning software
may be needed to achieve full capacity if this option jumper is used.



                             ST-32531A
                         Medalist 2531 AT

       FORMATTED CAPACITY _______________________2557
       ACTUATOR TYPE ____________________________VOICE COIL
       CYLINDERS __PHYSICAL______________________
       HEADS ______PHYSICAL______________________6
       DISCS (3.5 in) ___________________________3
       MEDIA TYPE _______________________________THIN FILM
       HEAD TYPE ________________________________THIN FILM
       RECORDING METHOD _________________________ZBR 2/3 (1,7)RLL
       INTERNAL TRANSFER RATE (Mbits/sec) _______up to 88
       EXTERNAL TRANSFER RATE (Mbytes/sec) ______up to 16.6
       PIO MODE _________________________________4
       DMA SUPPORT ______________________________EISA Type B
       SPINDLE SPEED (RPM) ______________________4500
       AVERAGE LATENCY (mSEC) ___________________6.67
       BUFFER ___________________________________128K
        Read/Write Multiple, Read Look-Ahead,
        Multi-Segmented
       INTERFACE ________________________________Fast ATA-2
       SECTORS PER DRIVE (LBA mode) _____________4,995,648
       TPI (TRACKS PER INCH) ____________________5104
       BPI (KBITS PER INCH) _____________________108.7
       AVERAGE ACCESS (ms read/write) ___________12.5/14.5
       SINGLE TRACK SEEK (ms read/write) ________2.5/3.5
       MAX FULL SEEK (msread/write) _____________24/25
       MTBF (power-on hours) Office _____________300,000
       SHOCK (G's):
                operating (Read/Write) __________5
                abnormal ________________________
                nonoperating ____________________75
       ACOUSTICS (dBA) (typ/max) _______________37/45
       POWER DISSIPATION (watts) ________________
       POWER REQUIREMENTS: +12V START-UP (amps) _1.6
       POWER MANAGEMENT (Watts):
                           ACTIVE _______________4.6
                           IDLE _________________4.5
                           STANDBY ______________1.0
       WRITE PRECOMP (cyl) ______________________N/A
       REDUCED WRITE CURRENT (cyl) ______________N/A
       LANDING ZONE (cyl) _______________________AUTO
       IBM AT DRIVE TYPE ________________________*

       Physical:
                    Height (inches/mm):   1.03/26.2
                    Width  (inches/mm):   4.01/102.1
                    Depth  (inches/mm):   5.78/146.9
                    Weight     (lbs/g):   1.25/567.5

 * 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 translations:
                       This translation is generally acceptable, as
                       is, for non-DOS operating systems:
       4956 cyl, 16 heads, 63 sectors = 2,557,771,776

                       DOS operating systems may require a translation
                       that uses larger values for the CMOS head
                       parameter which lowers cylinders below 1024:
       619 cyl, 128 heads, 63 sectors = 2,555,707,392

                       Other FULL-CAPACITY solutions for DOS operating
                       systems include third-party drive preparation
                       software, system BIOS which supports LBA mode
                       or bios driven host adapters. Otherwise,
                       capacity may be limited to:
       1024 cyl, 16 heads, 63 sectors = 528,482,304


Some systems BIOS have capacity limitations. 
Types that have been identified are:
     a 2.113GB or 4095 cylinder limitation 
     a 3.262GB or 6322 cylinder limitation 
and, if exceeded, may cause the system to hang during boot, or 
it can truncate or wrap the cylinders when auto-detect options 
set in the CMOS.

DOS cannot access more than 2.147 Gbytes per partition.  Create
two partitions to access the drive's full capacity.

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)".

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. (05/21/97)

A copy of this specification file may be obtained by FTP at
ftp://ftp.seagate.com/techsuppt/at/st32531a.txt.