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                         SEAGATE TECHNOLOGY LLC
                              1-800-SEAGATE
                          http://www.seagate.com
                            (C)opyright 2001


ST-318417N Ultra SCSI (Barracuda 36ES)

  ÉÍÍÍÍÍÍÍÍÍÍÍ»
  º REAR VIEW º  (ST-318417N)
  ÈÍÍÍÍÍÍÍÍÍÍͼ

         50 pin I/O Cable Connection
         ³
    J1ÕÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ1¸ /ÄÄÄÄÄÄÄÄÄ\    TOP (HDA)
     ͵:::::::::::::::::::::::::Æͳ 0 0 0 0 ³ÍÍ
      ÔÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ; ÀÄ5ÄGÄGÄ12Ù    BOTTOM



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  º SIDE VIEW º  (ST-318417N)
  ÈÍÍÍÍÍÍÍÍÍÍͼ

    FRONT    TOP (HDA)    J2  87654321              Õ͸
     OF ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍ͵J1 Cable
    DRIVE    BOTTOM           ::::::::              Ô;
                              ³³³³³³³³
  Enable T-Res (N model only) Ù³³³³³³À Terminator Power³
   Start Delay (12 secs * ID) ÄÙ³³³³ÀÄ Terminator Powerÿ
                  Motor Start ÄÄÙ³³ÀÄÄ Reserved         ³
                Write Protect ÄÄÄÙÀÄÄÄ Parity Disable   ³
                                                        ³
    ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿                  ³
    ³ Termination Power-source Table ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
    ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
    ³          ÍÍÍÍÍ....ÍÍÍÍÍ....ÍÍÍÍÍPWA edgeÍÍÍÍͳ
    ³                       2 1       2 1     2 1  ³
    ³ A Drive Supplies Bus   ÖÄ·     ÖÄ·           ³
    ³ B Drive Supplies Own  øºøº     ºøºø    ÖøÄø· ³
    ³ C Bus Supplies Drive  øÓø½     Óø½ø    ÓøÄø½ ³
    ³ A+B is valid           A         B       C   ³
    ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄDefaultÄÄÄÄÄÄÄÄÄÙ
    Note: ND drives do not have internal terminators or any other
          way of adding internal terminators to the drive; use
          external active termination if required.


  ÉÍÍÍÍÍÍÍÍÍÍÍÍ»
  º FRONT VIEW º  (ST-318417N)
  ÈÍÍÍÍÍÍÍÍÍÍÍͼ
                                ÚÄÄ´Reserved. Shipped with cover installed.
                                ³  ÀDo not remove. Do not install jumpers
                    TOP (HDA)  ÕØÍÍ͸     1
   ÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͵::::³::::::ÆÍÍ
               *    BOTTOM     ÔÍÍÍ;³³³³³2
               ³               J6    ³³³³³³
          LED ÄÙ                     ³³³³³³
                          Remote LED Ù³³³³À ID 1
                         (pin-11 +5v) ³³³ÀÄ ID 2
                            Reserved ÄÙ³ÀÄÄ ID 4
                      (pin-10 ground)  ³
                            Reserved ÄÄÙ



                            ST-318417N



       UNFORMATTED CAPACITY (GB) ________________
       FORMATTED CAPACITY (GB) __________________18.400
       AVERAGE SECTORS PER TRACK ________________601 rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________59,700
       CYLINDERS ________________________________29,850 user
       HEADS ______PHYSICAL______________________2
       DISCS (3.5 in) ___________________________1
       MEDIA TYPE _______________________________THIN FILM/GMR
       RECORDING METHOD _________________________PRML 16/17 EPR4
       INTERNAL TRANSFER RATE (mbits/sec)________308 to 498
       INTERNAL FORMATTED TRANSFER RATE (MB/sec)_28.1 to 50.7
       EXTERNAL TRANSFER RATE (mbyte/sec) _______20 Sync
       SPINDLE SPEED (RPM) ______________________7,200
       AVERAGE LATENCY (mSEC) ___________________4.17
       BUFFER ___________________________________2048KB
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________Ultra SCSI
              ASA II, SCAM level 2 (1 default)
       BYTES PER TRACK __________________________384Kbytes avg
       SECTORS PER DRIVE ________________________35,937,500
       TPI (TRACKS PER INCH) ____________________32,197
       BPI (PEAK KBITS PER INCH) ________________490.9
       AVERAGE ACCESS (ms read/write)____________8.5/9.1
         Drive level without controller overhead
       SINGLE TRACK SEEK (ms read/write) ________0.4/0.5
       MAX FULL SEEK (ms read/write) ____________14.9/15.5
       MTBF (power-on hours) ____________________800,000
       SHOCK (G's, 11/2/.5 ms):
                operating (Read/Write) __________/63
                abnormal ________________________
                nonoperating ____________________150/200/350
       ACOUSTICS (Bels typical) ________Idle ____3.5
                                         Max ____
       POWER DISSIPATION (watts/BTUs) Active ____/
                                      Idle ______6.25/21.3
       POWER REQUIREMENTS: +12V START-UP (amps) _1.64
                           +12V TYPICAL (amps) __0.22 idle
                           +5V START-UP (amps) __0.92
                           +5V TYPICAL (amps) ___0.72 idle
                           IDLE (watts) _________
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE

       Physical:
                        Height (inches/mm):      1.0/25.4
                        Width  (inches/mm):     4.00/101.6
                        Depth  (inches/mm):     5.75/146
                        Weight    (lbs/kg):      1.2/0.544

Already low-level formatted at the factory with x spare sectors at
the end of each x cylinder region.  

ZBR = Zone Bit Recording = Variable sectors per track


Seagate reserves the right to change, without notice, product 
offerings or specifications. (01/04/2001)

A copy of this specification file may be obtained by FTP at
ftp://ftp.seagate.com/techsuppt/scsi/ST318417.N.