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ST12400N.TXT
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1993-01-21
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143 lines
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-12400N SCSI-2 Fast
╔═══════════╗
║ REAR VIEW ║
╚═══════════╝
50 pin I/O Cable Connection
│
J1╒════════════════════════1╕ /─────────\ TOP (HDA)
═╡:::::::::::::::::::::::::╞═│ 0 0 0 0 │══
╘═════════════════════════╛ └─5─G─G─12┘ BOTTOM
1──────┐ 1──────┐ 1──────┐
└──────┘ └───┬──┘ └──────┘
└Terminating Resistors┘
╔═════════════════╗
║ RIGHT SIDE VIEW ║
╚═════════════════╝
BACK ╒═╕ J2 12345678 TOP (HDA) FRONT
OF J1╞══════════════════════P═W═A═══════════════════════ OF
DRIVE ╘═╛ :::::::: BOTTOM DRIVE
││││││││
│Terminator Power ┘││││││└ Reserved
┌┤Terminator Power ─┘││││└─ Start Delay (16 secs * ID)
│ Enable T-Res ──┘││└── Motor Start
│ Parity ───┘└─── Write Protect
│
│
│ ┌────────────────────────────────┐
└─┤ Termination Power-source Table │
├────────────────────────────────┴─────────────┐
│ 1 2 1 2 1 2 │
│ ╓─╖ ╓─╖ A Drive Supplies Bus │
│ ║°║° °║°║ ╓°─°╖ B Drive Supplies Own │
│ ╙°╜° °╙°╜ ╙° °╜ C Bus Supplies Drive │
│ A B C │
│═════....═════....═════PWA edge═════ │
│ │
└──────Default─────────────────────────────────┘
╔════════════════╗
║ LEFT SIDE VIEW ║
╚════════════════╝ If these ID jumpers are used,
then ID jumpers shown in front
view ARE NOT USED.
FRONT TOP (HDA) J5 ╒══1╕ ╒═╕BACK
OF ════════P═W═A═══════════════════════════════╡:::╞═╡J1 OF
DRIVE BOTTOM ╘═══╛ ╘═╛DRIVE
│││
ID 1 ─┘│└─ ID 4
ID 2
╔════════════╗
║ FRONT VIEW ║
╚════════════╝
TOP (HDA) J6 ╒═════1╕
══P═W═A══════════════════════════╡::::::╞═
* BOTTOM ╘══════╛
│ 123456
LED ─┘ ││││││
ID 4 ┘││││└ Reserved
ID 2 ─┘││└─ Remote LED (pin-3 +5v)
ID 1 ──┘└── Spindle Synchronization
(pin-6 REF SIG+)
If these ID jumper are used, then
ID jumpers shown in left side
view ARE NOT USED.
ST-12400N
UNFORMATTED CAPACITY (MB) ________________2500
FORMATTED CAPACITY (xx SECTORS) (MB) _____2100
AVERAGE SECTORS PER TRACK ________________
ACTUATOR TYPE ____________________________STRAIGHT ARM
TRACKS ___________________________________49,894
CYLINDERS __PHYSICAL/USER_________________2,626/
HEADS ______PHYSICAL______________________19
DISCS (3.5 in) ___________________________10
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (1,7)
TRANSFER RATE INTERNAL (mbits/sec)________25 to 41
SPINDLE SPEED (RPM) ______________________5,411
AVERAGE LATENCY (mSEC) ___________________5.54
BUFFER ___________________________________256/1024 KByte
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________SCSI-2 FAST
SECTORS PER DRIVE ________________________
TPI (TRACKS PER INCH) ____________________
AVERAGE ACCESS (ms) (read/write)__________9.0/10.5
Drive level without controller overhead
SINGLE TRACK SEEK (ms) ___________________2
MAX FULL SEEK (ms) _______________________22
MTBF (power-on hours) ____________________500,000
POWER REQUIREMENTS: +12V START-UP (amps) _2.0
+12V TYPICAL (amps) __0.5
+5V START-UP (amps) __
+5V TYPICAL (amps) ___0.24
TYPICAL (watts) ______9
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): 5.75/146.1
Weight (lbs/kg): 2.0/0.99
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. (01/21/93)