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-4026 ST412 MFM /-4-3-2-1-\ | O O O O | Power \---------/ /Data Cable /Controller Cable 1 5 G G 12 ========= == ==================== === ============ o o o o /-1 o o o o | | Drive Select->1 2 3 4 | +- Resistor | | | | | Termination Pack | \+/ \-/ | | | \-Never Used (Drive Select 3 and 4) \----If twisted cable, use Drive Select 2 ST - 4026 UNFORMATTED CAPACITY (MB) ________________25.6 FORMATTED CAPACITY (17 SECTORS) (MB) _____21.4 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________2,460 CYLINDERS ________________________________615 HEADS ____________________________________4 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________625 BPI (BITS PER INCH) ______________________9,617 AVERAGE ACCESS (ms) ______________________40 SINGLE TRACK SEEK (ms) ___________________8 MTBF (power-on hours) ____________________15,000 POWER REQUIREMENTS: +12V START-UP (amps) _4.0 +12V TYPICAL (amps) __1.5 +5V TYPICAL (amps) ___1.5 TYPICAL (watts) ______25.5 MAXIMUM (watts) ______55 BUFFERED STEP PULSE RATE (micro sec) _____25-50 WRITE PRECOMP (cyl) ______________________N/A (616) REDUCED WRITE CURRENT (cyl) ______________N/A (616) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________2 Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)