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Medalist 1220

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

722.0 MB
4500 rpm
12 ms
699
32
63


Installation Guide | Product Manual

 

Odd characters? Click here for help. A version of this specification with the linedraw characters approximated by text is available by clicking here.

                         SEAGATE TECHNOLOGY, INC.
                              1-800-SEAGATE
                          http://www.seagate.com
                            (C)opyright 1994


ST-3780A (Medalist 720)

  浜様様様様様
   REAR VIEW   Type A configuration
  藩様様様様様

                40 pin I/O Cable Connection J1
                
           嬪様様様様  様様様様邑 /陳陳陳陳\    TOP (HDA)
     様様様::::::::::::::::::1突 0 0 0 0 獲
           塒様様様様由様様様様余 青5GG12    BOTTOM
                      
                      青陳 pin-20 removed


   ST-3780A
 浜様様様様様様融
   Front View    Type A configuration has ONLY these jumpers on the drive.
 藩様様様様様様夕

                        敖陳陳陳陳陳陳 Slave pins 1-2
                         敖陳陳陳陳陳 Master with Slave Present pins 3-4
                        団田陳陳陳陳陳 Cable Select pins 1-2 AND 3-4
                          敖陳陳堕陳 Dual-drive emulation pins 5-6 AND
  (TOP)                             pins 11-12
                                敖 Remote LED 13-, 14+
                                
  J8                   2o o o o o o o14
Option Block   様様様様1o o o o o o o 様様様様様様様様様PWA様様様様様
                             
                            青祖 Reserved
  (BOTTOM)              青陳祖陳陳 Master/Slave timing protocol changes to
                                    PDIAG.  Makes the drive compatible with
                                    some drives as the slave. Must be used
                                    with pins 1-2 (Slave)

                Spare jumpers stored on pins 1-3 and 5-7, as shipped.


  浜様様様様様
   REAR VIEW   Type B configuration
  藩様様様様様

  J5            40 pin I/O Cable Connection J1
     2o o       
     1o o  嬪様様様様  様様様様邑 /陳陳陳陳\    TOP (HDA)
     謡謡様::::::::::::::::::1突 0 0 0 0 獲
         塒様様様様由様様様様余 青5GG12    BOTTOM
                    
                    青陳 pin-20 removed
       
    OFF OFF -- One drive only
     ON OFF -- Drive is slave
    OFF ON  -- Drive is Master with slave present
     ON ON  -- Cable Select (must also jumper pins 6 and 8 on J8)
    SPARE   -- stored on pins 1-3


   ST-3780A
 浜様様様様様様融
   Front View    Type B configuration
 藩様様様様様様夕
                        敖陳陳陳陳陳陳 Spare - as shipped
                            敖陳陳陳 Cable Select pins 6-8
  (TOP)                        敖陳 Reserved
                                 敖 Remote LED 13-, 14+
                              攸 
  J8                    o o oo o o o14
Option Block   様様様様1o   o o o o o 様様様様様様様様様PWA様様様様様
                          
  (BOTTOM)                青 pin 3 missing

          Cable Select also requires Slave and Slave Present jumpers ON.



    ST-3780A
  浜様様様様様様様様
   RIGHT SIDE VIEW   Type B configuration
  藩様様様様様様様様

              敖陳 J6 Dual Drive emulation pins 1-2 AND pins 3-4
             攸      (spare jumper stored on pins 1-3, as shipped)
            2o o
BACK   嬪  1o o                                 TOP (HDA)  FRONT
 OF      突様様慷様様様様様様様PWA様様様様様様様様様様様 OF
DRIVE  塒                                      BOTTOM     DRIVE
               
               青 Pins 3-4 jumpered alone changes the Master/Slave
                  timing protocol to PDIAG.  Makes the drive compatible
                  with somes drives as the slave.  Must be used with pins
                  1-2 (Slave) on J5 Master/Slave jumper block.


Note: If the Dual Drive Emulation jumper is used, then TWO CMOS drive
      types will be required and only ONE drive per cable is allowed.



                             ST-3780A
                             Medalist 720

       UNFORMATTED CAPACITY _____________________
       FORMATTED CAPACITY (xx SECTORS) __________722
       ACTUATOR TYPE ____________________________VOICE COIL
       CYLINDERS __PHYSICAL______________________3,876
       HEADS ______PHYSICAL______________________4
       DISCS (3.5 in) ___________________________2
       MEDIA TYPE _______________________________THIN FILM
       HEAD TYPE ________________________________THIN FILM
       RECORDING METHOD _________________________ZBR RLL (1,7)
       INTERNAL TRANSFER RATE (Mbits/sec) _______27.9 to 47.24
       EXTERNAL TRANSFER RATE (Mbytes/sec) ______up to 16.6
       PIO MODE _________________________________4
       DMA SUPPORT ______________________________EISA Type B
       SPINDLE SPEED (RPM) ______________________4,500
       AVERAGE LATENCY (mSEC) ___________________6.67
       BUFFER ___________________________________256 Kbyte SeaCache
        Read/Write Multiple, Read Look-Ahead,
        Multi-Segmented
       INTERFACE ________________________________AT
       SECTORS PER DRIVE ________________________1,410,864
       TPI (TRACKS PER INCH) ____________________4,250
       BPI (BITS PER INCH) ______________________70,101
       AVERAGE ACCESS (ms) (read/write) _________12/14
       SINGLE TRACK SEEK (ms) ___________________3.5
       MAX FULL SEEK (ms) _______________________25
       MTBF (power-on hours) Office _____________300,000
       SHOCK (G's):
                operating (Read/Write) __________2
                nonoperating ____________________75
       ACOUSTICS (typ/max dBA) __________________30/36
       POWER DISSIPATION (watts) ________________
       POWER REQUIREMENTS: +12V START-UP (amps) _1.9
       POWER MANAGEMENT (Watts):
                           ACTIVE _______________6.6
                           IDLE _________________2.75
                           STANDBY ______________1
       WRITE PRECOMP (cyl) ______________________N/A
       REDUCED WRITE CURRENT (cyl) ______________N/A
       LANDING ZONE (cyl) _______________________AUTO
       IBM AT DRIVE TYPE ________________________*

       Physical:
                        Height (inches/mm):     1/25.4
                        Width  (inches/mm):  4.02/102.1
                        Depth  (inches/mm):  5.77/146.6
                        Weight    (lbs/kg):   1.5/0.68


 * 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:
       1399 cyl, 16 heads, 63 sectors = 722,018,304

                       DOS operating systems may require a system bios
                       that accepts or translates larger values for the
                       CMOS head parameter which lowers cylinders below
                       1024:
        699 cyl, 32 heads, 63 sectors = 721,502,208

                       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:
       699 cyl, 16 heads, 63 sectors = 360,751,104 (Master)
       699 cyl, 16 heads, 63 sectors = 360,751,104 (Slave see Dual
                       Drive emulation jumper)


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
ZBR = Zone Bit Recording = Variable sectors per track

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. (05/14/95)

A copy of this specification file may be obtained by FTP at
ftp://ftp.seagate.com/techsuppt/at/st3780a.txt.


 



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