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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)
- ┌──────────────────────────────────┬─────────────────────────────────┐
- │ United States +1 408 438-8771 │ United Kingdom +44 628 478011 │
- ├──────────────────────────────────┼─────────────────────────────────┤
- │ Germany +49 89 140-9331 │ Singapore +65 227-2217 │
- └──────────────────────────────────┴─────────────────────────────────┘
- (C)opyright 1991
-
-
-
- ST-12551N SCSI-2 Fast Wide (Barracuda 2)
-
-
- ST-12550N
-
-
- UNFORMATTED CAPACITY (MB) ________________2547
- FORMATTED CAPACITY (xx SECTORS) (MB) _____2100
- AVERAGE SECTORS PER TRACK ________________78 rounded down
- ACTUATOR TYPE ____________________________STRAIGHT ARM
- TRACKS ___________________________________52,364
- CYLINDERS __PHYSICAL______________________2,756
- HEADS ______PHYSICAL______________________19
- DISCS (3.5 in) ___________________________10
- MEDIA TYPE _______________________________THIN FILM
- RECORDING METHOD _________________________ZBR RLL (1,7)
- TRANSFER RATE INTERNAL (mbits/sec)________36 to 56
- SPINDLE SPEED (RPM) ______________________7,200
- AVERAGE LATENCY (mSEC) ___________________4.17
- BUFFER ___________________________________1024 KByte
- Read Look-Ahead, Adaptive,
- Multi-Segmented Cache
- INTERFACE ________________________________SCSI-2 FAST WIDE
- BYTES PER TRACK __________________________36,750 TO 58,800
- SECTORS PER DRIVE ________________________4,101,563
- TPI (TRACKS PER INCH) ____________________
- AVERAGE ACCESS (ms) (read/write)__________8.0/9.0
- Drive level without controller overhead
- SINGLE TRACK SEEK (ms) ___________________0.6/0.9
- MAX FULL SEEK (ms) _______________________20.0/21.0
- MTBF (power-on hours) ____________________500,000
- POWER REQUIREMENTS: +12V START-UP (amps) _2.5
- +12V TYPICAL (amps) __0.7
- +5V START-UP (amps) __
- +5V TYPICAL (amps) ___0.7
- TYPICAL (watts) ______12
- MAXIMUM (watts) ______
- WRITE PRECOMP (cyl) ______________________N/A
- REDUCED WRITE CURRENT (cyl) ______________N/A
- LANDING ZONE (cyl) _______________________AUTO PARK
- IBM AT DRIVE TYPE ________________________0 or NONE
-
- Physical:
- Height (inches/mm): 1.63/41.4
- Width (inches/mm): 4.00/101.6
- Depth (inches/mm): 5.97/146.1
- Weight (lbs/kg): 1.8/0.80
-
- Already low-level formatted at the factory with one spare sector
- per track and two spare cylinders/unit.
-
- ZBR = Zone Bit Recording = Variable sectors per track
-
- Seagate reserves the right to change, without notice, product
- offerings or specifications. (12/08/92)