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- SEAGATE TECHNOLOGY, INC.
- 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-125A
-
- /───────\
- 6-pin jumper version │O O O O│
- └5─G─G─12
- ═══════╤═════════════════════╤═══════════
- o o o │::::::::::::::::::::1│
- o o o ╘═════════════════════╛
- │ │ │
- │ 0 1 Single Drive 0=open
- │ 1 1 Dual-Drive Master 1=closed
- │ 1 0 Dual-Drive Slave
- │
- └───── Optional External LED
-
-
-
- /───────\
- 10-pin jumper version │O O O O│
- └5─G─G─12
- ═══════════╤═════════════════════╤═══════════
- o o o o o │::::::::::::::::::::1│
- o o o o o ╘═════════════════════╛
- │ │ │ │ │
- │ │ │ │ └ LT (Life Test, factory use only)
- │ │ 0 1 Single Drive 0=open
- │ │ 1 1 Dual-Drive Master 1=closed
- │ │ 0 0 Dual-Drive Slave
- │ └───── EWS (factory use only)
- └─────── Active Busy (Optional External LED)
-
-
- ST - 125A
-
- UNFORMATTED CAPACITY (MB) ________________25
- FORMATTED CAPACITY (26 SECTORS) (MB) _____21.5
- ACTUATOR TYPE ____________________________STEPPER
- TRACKS ___________________________________1,616
- CYLINDERS ________________________________404
- HEADS ____________________________________4
- DISCS ____________________________________2
- MEDIA TYPE _______________________________THIN FILM
- RECORDING METHOD _________________________RLL
- TRANSFER RATE (mbits/sec) ________________7.5
- SPINDLE SPEED (RPM) ______________________3,600
- INTERFACE ________________________________AT BUS
- TPI (TRACKS PER INCH) ____________________824
- BPI (BITS PER INCH) ______________________16,546
- AVERAGE ACCESS (ms) ______________________40/28*
- SINGLE TRACK SEEK (ms) ___________________8
- MTBF (power-on hours) ____________________150,000
- POWER REQUIREMENTS: +12V START-UP (amps) _2.0
- +12V TYPICAL (amps) __0.35
- +5V TYPICAL (amps) ___0.9
- TYPICAL (watts) ______9
- MAXIMUM (watts) ______29
- BUFFERED STEP PULSE RATE (micro sec) _____3-200
- WRITE PRECOMP (cyl) ______________________N/A (405)
- REDUCED WRITE CURRENT (cyl) ______________N/A (405)
- LANDING ZONE (cyl)________________________AUTO PARK
- IBM AT DRIVE TYPE ________________________6
-
- *ST125A-0/ST125A-1
-
- Possible translation: 615 cyl, 4 heads, 17 sectors = 21,411,840
-
- PHYSICAL/LOGICAL equivalent to NATIVE/TRANSLATION
-
- !WARNING! - Already low-level formatted at the factory.
-
- Since a User-definable or Custom translation geometry may
- be used, it is imperative that the values be written down
- and kept with your permanent records for retrieval in the
- event of CMOS battery failure.
-
- Seagate reserves the right to change, without notice, product
- offerings or specifications. (6/26/90)