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SEAGATE TECHNOLOGY, INC.
Customer Technical Support FAX Network +1 408 438-8137
Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
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? United States +1 408 438-8771 ? United Kingdom +44 628 478011 ?
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? Germany +49 89 140-9331 ? Singapore +65 227-2217 ?
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(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)