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Suzy B Software 2
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Suzy B Software CD-ROM 2 (1994).iso
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st1950n.txt
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1995-04-25
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6KB
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138 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 1993
ST-1950N 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 (12 secs * ID)
│ Factory Use ──┘││└── Motor Start
│ Parity Enable ───┘└─── 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
│││
Note: On early drives │ ID 1 ─┘│└─ ID 4
with PCB# 75782395 or │ ID 2
#75782485 ID jumpers are├── ID 4 ID 1
reversed. │
╔════════════╗
║ 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 - 1950N
UNFORMATTED CAPACITY (MB) ________________953
FORMATTED CAPACITY (xx SECTORS) (MB) _____803
AVERAGE SECTORS PER TRACK ________________76
ACTUATOR TYPE ____________________________VOICE COIL
TRACKS ___________________________________20,475
CYLINDERS ________________________________1,575 (user)
HEADS ____________________________________13
DISCS (3.5 in) ___________________________7
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (1,7)
INTERNAL TRANSFER RATE (mbits/sec) _______25.2 to 41.2
EXTERNAL TRANSFER RATE (mbyte/sec) _______4 Async
EXTERNAL TRANSFER RATE (mbyte/sec) _______10 Sync
SPINDLE SPEED (RPM) ______________________4,535
AVERAGE LATENCY (mSEC) ___________________6.61
BUFFER ___________________________________256 Kbyte
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________SCSI-2 Fast
BYTES PER TRACK __________________________46,550 avg.
TPI (TRACKS PER INCH) ____________________2,150
AVERAGE ACCESS (ms) (read/write)__________TBD
Drive level without controller overhead
SINGLE TRACK SEEK (ms) ___________________TBD
MAX FULL SEEK (ms) _______________________TBD
MTBF (power-on hours) ____________________200,000
POWER REQUIREMENTS: +12V START-UP (amps) _2.0
+12V TYPICAL (amps) __0.5
+5V TYPICAL (amps) ___0.4
TYPICAL (watts) ______11
IDLE (watts) _________9
LANDING ZONE (cyl)________________________AUTO PARK
IBM AT DRIVE TYPE ________________________0 or NONE
Already low-level formatted at the factory.
ZBR = Zone Bit Recording = Variable sectors per track
Formatted at the factory with 1 spare sector per track
and two spare cylinders at inner tracks per unit.
Seagate reserves the right to change, without notice, product
offerings or specifications. (10/12/93)