SEAGATE TECHNOLOGY, INC. Customer Technical Support FAX Network +1 408 438-8137 Customer Technical Support Bulletin Boards (300-9600, 8-N-1) /----------------------------------+---------------------------------\ | United States +1 408 438-8771 | United Kingdom +44 628 478011 | +----------------------------------+---------------------------------| | Germany +49 89 140-9331 | Singapore +65 227-2217 | \----------------------------------+---------------------------------/ (C)opyright 1991 ST-4376N (94171-376 or -344) Wren 4 FH SCSI Connects CHASIS ground to ground lug --------------\ Connects SIGNAL ground to ground lug ------------\ | Drive Select ID's -------\ | | Motor Start Option enable ---\ | G G Parity Check Option enable -\ | /-+-\ /1+2\ P M 4 2 1 |o|o| /12-G-G-5-\ o o o o o |o|o| | 0 0 0 0 | Power o o o o o \-+-/ \---------/ ===============================================================Servo=PWA= ===============================================================Data=PWA== 1-------/ |:::SCSI Cable::::::::::::1 | /-\ 1--------/ Terminator DIP \===========================/ |o| o Terminator DIP |o+-o \+/ Terminator power (+5v) from drive (vertical) ---/ Terminator power from the Bus (lower horizontal) ST-4376N 94171-376/M WREN 4 FH UNFORMATTED CAPACITY (MB) ________________376 FORMATTED CAPACITY (xx SECTORS) (MB) _____330 AVERAGE SECTORS PER TRACK ________________45 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________13914 CYLINDERS ________________________________1549 HEADS ____________________________________9 DISCS ____________________________________5 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________ZBR RLL (2,7) TRANSFER RATE (mbytes/sec) _______________1.125-1.875 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.33 BUFFER ___________________________________32 Kbyte Read Look-Ahead, Non-Adaptive, Single-Segmented Buffer INTERFACE ________________________________SCSI TPI (TRACKS PER INCH) ____________________1280 BPI (BITS PER INCH) ______________________19058 AVERAGE ACCESS (ms) ______________________17.5 SINGLE TRACK SEEK (ms) ___________________4 MAX FULL SEEK (ms) _______________________43 MTBF (power-on hours) ____________________100,000 POWER REQUIREMENTS: +12V START-UP (amps) _4.5 +12V TYPICAL (amps) __1.4 +5V START-UP (amps) __1.9 +5V TYPICAL (amps) ___1.5 TYPICAL (watts) ______27 MAXIMUM (watts) ______64 BUFFERED STEP PULSE RATE (micro sec) _____ WRITE PRECOMP (cyl) ______________________N/A REDUCED WRITE CURRENT (cyl) ______________N/A LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________0 or NONE ZBR = Zone Bit Recording = Variable sectors per track Already low-level formatted at the factory. Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)