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SEAGATE TECHNOLOGY, INC.
1-800-SEAGATE
http://www.seagate.com
(C)opyright 1997
ST-1480N SCSI-2
ÉÍÍÍÍÍÍÍÍÍÍÍ»
º REAR VIEW º
ÈÍÍÍÍÍÍÍÍÍÍͼ
50 pin I/O Cable Connection
ÕÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ1¸
J4³:::::::::::::::::::::::::³ /ÄÄÄÄÄÄÄÄÄ\
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ÚÄÄÄÄÄÄ1 ÚÄÄÄÄÄÄ1 ÚÄÄÄÄÄÄ1 ÀÄ5ÄGÄGÄ12Ù
ÀÄÄÄÄÄÄÙ ÀÄÄÄÂÄÄÙ ÀÄÄÄÄÄÄÙ
ÀTerminating ResistorsÙ
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º LEFT SIDE VIEW º
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12345678
ÕÍÍÍÍÍÍÍ͸
FRONT J6³::::::::³ BACK
OF ÍÍÍÍÍÍÍÍÍÍÏ1ÍÍÍÍÍÍÍÏÍÍÍÍÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ OF
DRIVE ³³³³³³³³ DRIVE
Factory Use Ù³³³³³³À Terminator Power (see below)³
Motor Start ÄÙ³³³³ÀÄ Terminator Power (see below)ÃÄÄ¿
Start Delay ÄÄÙ³³ÀÄÄ Reserved ³
Write Protect ÄÄÄÙÀÄÄÄ Parity ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄ¿
³ Termination Power-source Table ³
ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄ¿
³ 7 8 7 8 7 8 ³
³ ÖÄ· ÖÄ· ÖÄÄÄ· A Drive Supplies Own ³
³ øºøº ºøºø ÓøÄø½ B Drive Supplies Bus ³
³ øÓø½ Óø½ø ø ø C Bus Supplies Drive ³
³ A B C ³
ÔÍÍÍÍÍÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ;
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º RIGHT SIDE VIEW º
ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ
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BACK J5³:::³ FRONT
OF ÍÍÍÍÍÏÍÍÍÏÍÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ OF
DRIVE ³³³ DRIVE
ID 4 ÄÙ³ÀÄ ID 1 If these ID jumpers are used,
ID 2 then ID jumpers shown in front
view ARE NOT USED.
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º FRONT VIEW º
ÈÍÍÍÍÍÍÍÍÍÍÍͼ
If these ID jumper are used,
ÕÍÍÍÍ͸ then ID jumpers shown in right side
J7³:::::³ view ARE NOT USED.
ÍÍÏ1ÍÍÍÍÏÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ
³³³³³
ID 4 Ù³³³À Remote LED
ID 2 ÄÙ³ÀÄ Spindle Synchronization (default jumper ON)
ID 1
ST - 1480N
UNFORMATTED CAPACITY (MB) ________________492
FORMATTED CAPACITY (xx SECTORS) (MB) _____426*
AVERAGE SECTORS PER TRACK ________________62
ACTUATOR TYPE ____________________________VOICE COIL
TRACKS ___________________________________13,302
CYLINDERS ________________________________1476 (user)
HEADS ____________________________________9
DISCS ____________________________________5
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________ZBR
INTERNAL TRANSFER RATE (mbits/sec) _______17 to 25
SPINDLE SPEED (RPM) ______________________4,412
AVERAGE LATENCY (mSEC) ___________________6.8
BUFFER ___________________________________64 Kbyte
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________SCSI-2
BYTES PER TRACK __________________________37,037 avg
SECTORS PER DRIVE ________________________823,608
TPI (TRACKS PER INCH) ____________________1760
BPI (BITS PER INCH) ______________________
AVERAGE ACCESS (ms) ______________________14
SINGLE TRACK SEEK (ms) ___________________2.5
MAX FULL SEEK (ms) _______________________26
MTBF (power-on hours) ____________________150,000
POWER REQUIREMENTS: +12V START-UP (amps) _2.5
+12V TYPICAL (amps) __0.54
+5V TYPICAL (amps) ___0.53
TYPICAL (watts) ______9.1
MAXIMUM (watts) ______15
BUFFERED STEP PULSE RATE (micro sec) _____
WRITE PRECOMP (cyl) ______________________N/A
REDUCED WRITE CURRENT (cyl) ______________N/A
LANDING ZONE (cyl)________________________AUTO PARK
IBM AT DRIVE TYPE ________________________0 or NONE
* 512 bytes per sector, one spare sector per track,
two spare cylinders per unit.
Already low-level formatted at the factory.
ZBR = Zone Bit Recording = Variable sectors per track
Seagate reserves the right to change, without notice, product
offerings or specifications. (9/24/97)
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