SEAGATE TECHNOLOGY, INC. Technical Support Bulletin Board 408/438-8771 [300-9600 HST, MNP 3/5, N-8-1] (C)opyright 1990 ST-4051 /Ä4Ä3Ä2Ä1Ä\ ³ O O O O ³ Power ÀÄÄÄÄÄÄÄÄÄÙ ÚData Cable 1 5 G G 12 ÍÍÍÍÍÍÍÍÍ ÍÍ ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍÍ o o o o o o o o Ú1 ÀController Cable o o o o o o o o ³³ Drive Select->1 2 3 4 ³ ³ ³ ³ ³ÃÄ Resistor Termination Pack ³ ³ ³ ³ ³ ³ ³ ³³ ³ ÀÂÙ ³ ³ ³ ³ ÀÙ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ À Radial ³ ³ ³ ³ ÀÄÄ Recovery Mode ³ ³ ³ ÀÄÄÄÄ Write Fault ³ ³ ÀÄÄÄÄÄÄ Not Connected ³ ÀÄÄÄÄÄÄÄÄÄ Never Used (Drive Select 3 and 4) À If twisted cable, use Drive Select 2 ST - 4051 UNFORMATTED CAPACITY (MB) ________________50.88 FORMATTED CAPACITY (17 SECTORS) (MB) _____42.52 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________4,885 CYLINDERS ________________________________977 HEADS ____________________________________5 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________960 BPI (BITS PER INCH) ______________________9,720 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) _____10-70 WRITE PRECOMP (cyl) ______________________N/A (978) REDUCED WRITE CURRENT (cyl) ______________N/A (978) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________11 or 17* * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)