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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)
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? United States +1 408 438-8771 ? United Kingdom +44 628 478011 ?
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? Germany +49 89 140-9331 ? Singapore +65 227-2217 ?
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(C)opyright 1991
ST-1239NS (94351-230S) Swift SCSI
????\
? 0 ? 5
? 0 ? G
? 0 ? G
? 0 ? 12 .................... o o o o o o
????/ 1................... o o o o o o
????????????????????????????????????????????
1??????? 1??????? 1??????? 1 2 4 ? ? ?
Terminator Resistors ????? ? ? ?
? ? ? ? Terminator Power Select
Drive ID, binary - use ????? ? ? ? Header located on the side
ID 0 (no jumpers) for ? ? ? ? ??????????????????????????
single drive install ? ? ? ? (Back) A B (Front of drive)
Enable Parity Checking ????????? ? ? C D
Enable Motor Start Option ??????????? ? ?????????????P?W?A
Synchronized Spindle ????????????? ?
?
???????????????????????????????????????????
???
A-B Drive from Power Connector (factory default)
A-C Drive from SCSI Bus
A-C&B-D Drive from Power Connector and Provide to SCSI Bus
B-D Only provide to SCSI Bus
Swift with Shrouded SCSI Connector
????\
? 0 ? 5 ?? If the SCSI connector has a plastic shroud,
? 0 ? G ? note pin-1 on cable and T-res.
? 0 ? G ?
? 0 ? 12 ?????????????????????? o o o o o o
????/ ?:::::::::::::::::::1? o o o o o o
????????????????????????????????????????????
???????1 ???????1 ???????1 1 2 4 ? ? ?
Terminator Resistors ????? ? ? ?
? ? ? ? Terminator Power Select
Drive ID, binary - use ????? ? ? ? Header located on the side
ID 0 (no jumpers) for ? ? ? ? ??????????????????????????
single drive install ? ? ? ? (Back) A B (Front of drive)
Enable Parity Checking ????????? ? ? C D
Enable Motor Start Option ??????????? ? ?????????????P?W?A
Synchronized Spindle ????????????? ?
?
???????????????????????????????????????????
???
A-B Drive from Power Connector (factory default)
A-C Drive from SCSI Bus
A-C&B-D Drive from Power Connector and Provide to SCSI Bus
B-D Only provide to SCSI Bus
ST-1239NS
94351-230S Swift
UNFORMATTED CAPACITY (MB) ________________239
FORMATTED CAPACITY (36 SECTORS/1 SPARED)__204.2
ACTUATOR TYPE ____________________________VOICE COIL
TRACKS ___________________________________11,412
CYLINDERS ________________________________1,268
HEADS ____________________________________9
DISCS ____________________________________5
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________RLL (2,7)
TRANSFER RATE (mbytes/sec) _______________1.25
SPINDLE SPEED (RPM) ______________________3,600
AVERAGE LATENCY (mSEC) ___________________8.33
BUFFER ___________________________________32 or 64 Kbyte
Read Look-Ahead, Non-Adaptive,
Single-Segmented
INTERFACE ________________________________SCSI
SECTORS PER DRIVE ________________________398,790
TPI (TRACKS PER INCH) ____________________1,543
BPI (BITS PER INCH) ______________________30,000 max
AVERAGE ACCESS (ms) ______________________15
SINGLE TRACK SEEK (ms) ___________________4
MAX FULL SEEK (ms) _______________________35
MTBF (power-on hours) ____________________150,000
POWER REQUIREMENTS: +12V START-UP (amps) _2.5
+12V TYPICAL (amps) __0.7
+5V START-UP (amps) __0.75
+5V TYPICAL (amps) ___0.4
TYPICAL (watts) ______11
MAXIMUM (watts) ______34
BUFFERED STEP PULSE RATE (micro sec) _____6-200
WRITE PRECOMP (cyl) ______________________N/A (1269)
REDUCED WRITE CURRENT (cyl) ______________N/A (1269)
LANDING ZONE (cyl) _______________________AUTO PARK
IBM AT DRIVE TYPE ________________________0 or NONE
Already low-level formatted at the factory.
Swift Remote LED Option
Front View of Drive Without the Plastic Bezel
?????????
? A ? B ? B = Anode
????????? D = Cathode
? C ? D ?
...???????????????????????????????P?W?A???...
? Default jumper at C-D for LED mounted on drive PWA
? To use remote LED, remove jumper and extend B (Anode)
and D (Cathode).
? Swift LED kit 75912397 allows connection to a remote LED
? Swift LED kit 95913369 has an LED for attachment to the
system front bezel or a 5.25-inch frame kit
Seagate reserves the right to change, without notice, product
offerings or specifications. (6/26/90)