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SEAGATE TECHNOLOGY, INC.
1-800-SEAGATE
http://www.seagate.com
(C)opyright 1991
ST-238R ST412 RLL
/Ä4Ä3Ä2Ä1Ä\
³ O O O O ³ Power
o o o o o o o o ÀÄÄÄÄÄÄÄÄÄÙ
ÚData Cable o o o o o o o o ÚController Cable 1 5 G G 12
ÍÍÍÍÍÍÍÍÍ ÍÍ ³ ³ ³ ³ ³ ³ ³ ³ ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍÍ
³ ³ ³ ³ ³ ³ ³ ³ ÚÄÄÄÄÄÄÄÄÄÄÄÄ1
³ ³ ³ ³ ³ ³ ³ ³ ÀÄTerminatorÄÙ
³ ³ ³ ³ ³ ³ ³ ³
Drive Select->1 2 3 4 ³ ³ ³ À Radial
³ ³ ³ ³ ³ ÀÄÄ Reserved
³ ÀÂÙ ³ ÀÄÄÄÄ Write Fault
³ ³ ÀÄÄÄÄÄÄ Factory Test
³ ÀÄÄÄÄÄÄÄÄÄ Never Used (Drive Select 3 and 4)
À If twisted cable, use Drive Select 2
ST - 238R
UNFORMATTED CAPACITY (MB) ________________38.4
FORMATTED CAPACITY (26 SECTORS) (MB) _____32.7
ACTUATOR TYPE ____________________________STEPPER
TRACKS ___________________________________2,460
CYLINDERS ________________________________615
HEADS ____________________________________4
DISCS ____________________________________2
MEDIA TYPE _______________________________OXIDE
RECORDING METHOD _________________________RLL (2,7)
TRANSFER RATE (mbits/sec) ________________7.5
SPINDLE SPEED (RPM) ______________________3,600
AVERAGE LATENCY (mSEC) ___________________8.3
INTERFACE ________________________________ST412
SECTORS PER DRIVE ________________________63,960
TPI (TRACKS PER INCH) ____________________588
BPI (BITS PER INCH) ______________________14,740
AVERAGE ACCESS (ms) ______________________65
SINGLE TRACK SEEK (ms) ___________________20
MAX FULL SEEK (ms) _______________________150
MTBF (power-on hours) ____________________100,000
POWER REQUIREMENTS: +12V START-UP (amps) _2.4
+12V TYPICAL (amps) __0.9
+5V TYPICAL (amps) ___0.8
TYPICAL (watts) ______14.8
MAXIMUM (watts) ______33
BUFFERED STEP PULSE RATE (micro sec) _____5-200
WRITE PRECOMP (cyl) ______________________N/A (616)
REDUCED WRITE CURRENT (cyl) ______________N/A (616)
LANDING ZONE (cyl)________________________670
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.
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/rll/st238r.txt.
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