home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
BBS 1
/
BBS#1.iso
/
document
/
allrll.arj
/
ST225R.TXT
< prev
next >
Wrap
Text File
|
1991-07-12
|
3KB
|
69 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 1991
ST-225R ST412 RLL
/─4─3─2─1─\
│ O O O O │ Power
o o o o o o o o └─────────┘
┌Data Cable o o o o o o o o ┌Controller Cable 1 5 G G 12
═════════ ══ │ │ │ │ │ │ │ │ ════════════════════ ═══ ════════════
│ │ │ │ │ │ │ │ ┌────────────1
│ │ │ │ │ │ │ │ └─Terminator─┘
│ │ │ │ │ │ │ │
Drive Select->1 2 3 4 │ │ │ └ Radial
│ │ │ │ │ └── Reserved
│ └┬┘ │ └──── Write Fault
│ │ └────── Factory Test
│ └───────── Never Used (Drive Select 3 and 4)
└ If twisted cable, use Drive Select 2
ST - 225R
UNFORMATTED CAPACITY (MB) ________________25.0
FORMATTED CAPACITY (31 SECTORS) (MB) _____21.2
ACTUATOR TYPE ____________________________STEPPER
TRACKS ___________________________________1,334
CYLINDERS ________________________________667
HEADS ____________________________________2
DISCS ____________________________________1
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________RLL
TRANSFER RATE (mbits/sec) ________________7.5
SPINDLE SPEED (RPM) ______________________3,000
INTERFACE ________________________________ST412
TPI (TRACKS PER INCH) ____________________588
BPI (BITS PER INCH) ______________________18,897
AVERAGE ACCESS (ms) ______________________70
SINGLE TRACK SEEK (ms) ___________________20
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 (668)
REDUCED WRITE CURRENT (cyl) ______________N/A (668)
LANDING ZONE (cyl)________________________670
IBM AT DRIVE TYPE ________________________*
*MUST BE USED WITH THE ST11R CONTROLLER OR
16-BIT CONTROLLER
* 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)