|
| |
ST-138 ST412 MFM
/---+
| O |12
| O |G
| O |G
| O |5
+Data Cable +Controller Cable 1 \---+
--------- -- -------------------- --- ------------
o o o o o o o o +------------1
o o o o o o o o +--+---------+
| | | | 4 3 2 1 + Resistor Termination Pack
| | | | ---+---
| | | | |
| | | | +---- Drive Selects
| | | +--------- Factory Test
| | +----------- Write Fault
| +------------- Not Used
+--------------- Radial
ST - 138
UNFORMATTED CAPACITY (MB) ________________38.4
FORMATTED CAPACITY (17 SECTORS) (MB) _____32.1
ACTUATOR TYPE ____________________________STEPPER
TRACKS ___________________________________3,690
CYLINDERS ________________________________615
HEADS ____________________________________6
DISCS ____________________________________3
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________MFM
TRANSFER RATE (mbits/sec) ________________5.0
SPINDLE SPEED (RPM) ______________________3,600
AVERAGE LATENCY (mSEC) ___________________8.3
INTERFACE ________________________________ST412
SECTORS PER DRIVE ________________________62,730
TPI (TRACKS PER INCH) ____________________824
BPI (BITS PER INCH) ______________________14,953
AVERAGE ACCESS (ms)*______________________40/28
SINGLE TRACK SEEK (ms) ___________________8
MAX FULL SEEK (ms) _______________________70
MTBF (power-on hours) ____________________150,000
POWER REQUIREMENTS: +12V START-UP (amps) _2.0
+12V TYPICAL (amps) __0.35
+5V TYPICAL (amps) ___0.8
TYPICAL (watts) ______8
MAXIMUM (watts) ______28
BUFFERED STEP PULSE RATE (micro sec) _____3-200
WRITE PRECOMP (cyl) ______________________N/A (616)
REDUCED WRITE CURRENT (cyl) ______________N/A (616)
LANDING ZONE (cyl)________________________AUTO PARK
IBM AT DRIVE TYPE ________________________3
*ST138-0/ST138-1
Seagate reserves the right to change, without notice, product
offerings or specifications. (6/26/90) |