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SEAGATE TECHNOLOGY, INC.
1-800-SEAGATE
http://www.seagate.com
(C)opyright 1991
ST-4769ES Wren Runner 2 FH ESDI
ÚData Cable ÚController Cable /Ä5ÄGÄGÄ12\
ÍÍÍÍÍÍÍÍ ÍÍÍ J11 ÍÍÍÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍ Í³ 0 0 0 0 ÆÍÍ
o o o o o o o o o 1ÄÄÄÄÄÄÄÄÄÄÄ¿ o o o oÀÄÄÄJ1ÄÄÄÄÙ
J9 o o o o o o o ÄÂÄ ÀTerminatorÄÙ o o o o
1 2 3 4 5 6 7 À´Synchronous 1 2 4 W
Motor Start ÄÄÙ ³ ³ ³ ³ ³ ³ ³Spindles ÄÄÂÄÄ ³ J8
option enable ³ ³ ³ ³ ³ ³ ³ À Write Protect
³ ³ ³ ³ ³ À Synchronized Spindle ÀÄÄÄÄ Drive Selects
Factory use only ÄÙ ³ ³ ³ ³ Terminator (connected on Binary Coded
³ ³ ³ ³ last drive in daisy chain)
Sectors ³ ³ ³ ÀÄ Factory use only
ÍÍÍÍÍÍÍÍÍÍÍØÍØÍØÍÍ
Special 0 0 0
50 0 0 1 = 595,968,000
51 0 1 0 = 607,887,360
52 0 1 1 = 619,806,720
53 1 0 0 = 631,726,080
29 1 0 1
Reserved 1 1 0
Add Mark 1 1 1 0=open; 1=closed
ST-4769E
UNFORMATTED CAPACITY (MB) ________________
FORMATTED CAPACITY (53 SECTORS) (MB) _____631
ACTUATOR TYPE ____________________________VOICE COIL
TRACKS ___________________________________23,280
CYLINDERS ________________________________1552
HEADS ____________________________________15
DISCS ____________________________________8
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________RLL (1,7)
INTERNAL TRANSFER RATE (mbits/sec) _______22
SPINDLE SPEED (RPM) ______________________4,800
AVERAGE LATENCY (mSEC) ___________________6.25
INTERFACE ________________________________ESDI
TPI (TRACKS PER INCH) ____________________1,600
BPI (BITS PER INCH) ______________________29,378
AVERAGE ACCESS (ms) ______________________12.9
SINGLE TRACK SEEK (ms) ___________________2.5
MAX FULL SEEK (ms) _______________________27
MTBF (power-on hours) ____________________150,000
POWER REQUIREMENTS: +12V START-UP (amps) _4.5
+12V TYPICAL (amps) __2.0
+5V START-UP (amps) __1.2
+5V TYPICAL (amps) ___0.8
TYPICAL (watts) ______27
MAXIMUM (watts) ______
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 ________________________*
* MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING
AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP
HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE.
** ESDI controllers which offer an Alternate/Spare sector per track
option will format to a capacity = Cyl*Hd*(SPT-1)*512 bytes
Seagate reserves the right to change, without notice, product
offerings or specifications. (6/26/90)
A copy of this specification file may be obtained
by FTP at
ftp://ftp.seagate.com/techsuppt/esdi/st4769e.txt.
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