Barracuda 18
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Installation Guide | Product Manual |
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SEAGATE TECHNOLOGY, INC.
1-800-SEAGATE
http://www.seagate.com
(C)opyright 1997
ST-118273W Ultra SCSI Wide (Barracuda 18)
ST-118273LW Ultra2 SCSI Wide (Barracuda 18, LVD)
ÉÍÍÍÍÍÍÍÍÍÍÍ»
º REAR VIEW º (ST-118273W/LW/WD only)
ÈÍÍÍÍÍÍÍÍÍÍͼ
(TOP) J5 Auxiliary
___________________ ÚÄÄ Ä1¿/ÍÍÍÍÍÍÍÍÍ\
Í( ×××××××××××××××××1)ͳ::::::³³ 0 0 0 0 ÆÍ
\ÄÄÄÄÄÄÄÄÄÄÄijÄÄÄÄ/ À ÄÄ 2ÙÀÄ5ÄGÄGÄ12Ù
68 pin I/O CableÙ ³³³³³³
Connection Male ³³³³³³ SCSI ID = 0 (none)
³³³³³ÀÄÄ SCSI ID = 1
pin-11 +5v ÄÄÙ³³³ÀÄÄÄ SCSI ID = 2
pin-10 GND ÄÄÄÙ³ÀÄÄÄÄ SCSI ID = 4
ÃÄÄÄÄÄ SCSI ID = 8
pins 9 & 12 no connection ÀÄÄÄÄÄÄ or pin-8 Activity LED*
* These pins are driven low for 250ms after PWR ON and RESET
to allow jumper selectable SCSI ID as shown above.
ÉÍÍÍÍÍÍÍÍÍÍÍ»
º REAR VIEW º (ST-118273WC/DC only)
ÈÍÍÍÍÍÍÍÍÍÍͼ
80 pin I/O and DC Power Wall/bracket Connection
³ Female
J1 /ÄÄÄijÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ\ TOP (HDA)
ÍÍÍÍÍÍÍÍÍÍ/ ×××××××××××××××××××× \ÍÍÍÍÍÍÍÍÍÍ
(\Ä1ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ40/) BOTTOM
Notes on 80 pin I/O connector:
pins 1 - 4 = +12v 41 - 44 = 12v GND
34 - 36 = +5v 74 - 76 = 5v GND
37 = SYNC 77 = LEDC
38 = MTRON 78 = DLYDST
39 = SCSIA0 79 = SCSIA1
40 = SCSIA2 80 = SCSIA3
Mating connector: AMP US p/n: 2-557103-1 straight-in, Male 80-pin
2-557101-1 right angle to PCB
ÉÍÍÍÍÍÍÍÍÍÍÍ»
º SIDE VIEW º (ST-118273W/WD/LW/WC/DC/LC)
ÈÍÍÍÍÍÍÍÍÍÍͼ
FRONT TOP (HDA) J2 87654321 Õ͸
OF ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍ͵J1 Cable
DRIVE BOTTOM :::::::: Ô;
³³³³³³³³
Enable T-Res (W model only) Ä´³³³³³³ÀÄ Terminator Power³
Force Single-ended (LC, LW, ÄÙ³³³³³ÀÄÄ Terminator Powerÿ
LVD models only) ³³³³ÀÄÄÄ Reserved ³
Start Delay (12 secs * ID) ÄÄÙ³³ÀÄÄÄÄ Parity Disable ³
Motor Start ÄÄÄÙÀÄÄÄÄÄ Write Protect ³
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³
³ Termination Power-source Table ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
³ ÍÍÍÍÍ....ÍÍÍÍÍ....ÍÍÍÍPWA edgeÍÍÍÍÍÍ ³
³ 2 1 2 1 2 1 ³
³ A Drive Supplies Bus ÖÄ· ÖÄ· ³
³ B Drive Supplies Own øºøº ºøºø ÖøÄø· ³
³ C Bus Supplies Drive øÓø½ Óø½ø ÓøÄø½ ³
³ A+B is valid A B C ³
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄDefaultÄÄÄÄÄÄÄÄÄÄÙ
(option A only on WD, or LW models)
Note: WD, DC, LW and LC drives do not have internal terminators
or any other way of adding internal terminators to the
drive; use external active termination if required.
Use active (ANSI SCSI-2 Alternative 2) terminators
when terminating the bus. Use active negation
terminators when terminating a SCSI Ultra2 bus
operating in Low Voltage Differential (LVD) mode.
ÉÍÍÍÍÍÍÍÍÍÍÍÍ»
º FRONT VIEW º (ST-118273W/WD/LW/WC/DC/LC)
ÈÍÍÍÍÍÍÍÍÍÍÍͼ
ÚÄÄ´Reserved. Shipped with cover installed.
³ ÀDo not remove. Do not install jumpers.
TOP (HDA) ÕØÍÍ͸ 1
ÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͵::::³::::::ÆÍÍ
* BOTTOM ÔÍÍÍ;³³³³³2
³ J6 ³³³³³³
LED ÄÙ ³³³³³³
Remote LED Ù³³³³À ID 1
(pin-11 +5v) ³³³ÀÄ ID 2
Reserved ÄÙ³ÀÄÄ ID 4
(pin-10 ground) ÀÄÄÄ ID 8
ST-118273W
UNFORMATTED CAPACITY (GB) ________________
FORMATTED CAPACITY (GB) __________________18.21
AVERAGE SECTORS PER TRACK ________________237 rounded down
ACTUATOR TYPE ____________________________ROTARY VOICE COIL
TRACKS ___________________________________150,020
CYLINDERS ________________________________7,501 user
HEADS ______PHYSICAL______________________20
DISCS (3.5 in) ___________________________10
MEDIA TYPE _______________________________THIN FILM/MR
RECORDING METHOD _________________________EPR4 16/17
INTERNAL TRANSFER RATE (mbits/sec)________120 to 190
EXTERNAL TRANSFER RATE (mbyte/sec) _______40 Sync
Low Voltage Differential(LVD) _______80 Sync
SPINDLE SPEED (RPM) ______________________7,200
AVERAGE LATENCY (mSEC) ___________________4.17
BUFFER (/optional) _______________________512KB/2MB
(LVD models /optional) ____________1MB/4MB
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________Ultra-SCSI Wide
Low Voltage Differential __________Ultra2-SCSI Wide
ASA II, SCAM level 2 (1 default)
BYTES PER TRACK (avg unformatted) ________155,000
SECTORS PER DRIVE ________________________35,566,480
TPI (TRACKS PER INCH) ____________________8250
BPI (KBITS PER INCH) _____________________180
AVERAGE ACCESS (ms read/write)____________7.9/8.7
Drive level with controller overhead
SINGLE TRACK SEEK (ms read/write) ________1.1/1.4
MAX FULL SEEK (ms read/write) ____________16/18
MTBF (power-on hours) ____________________1,000,000
SHOCK (G's, 11/2 ms):
operating (Read/Write) __________5
abnormal ________________________10
nonoperating ____________________50/135
ACOUSTICS (Bels typical, sound power) ____4.2
POWER DISSIPATION (watts/BTUs) Active ____20.85/71.2
Idle ______13.35/45.6
POWER REQUIREMENTS: +12V START-UP (amps) _2.8
+12V TYPICAL (amps) __0.8 idle
+5V START-UP (amps) __1.2
+5V TYPICAL (amps) ___0.75 idle
IDLE (watts) _________13
LANDING ZONE (cyl) _______________________AUTO PARK
IBM AT DRIVE TYPE ________________________0 or NONE
Physical:
Height (inches/mm): 1.62/41.1
Width (inches/mm): 4.00/101.6
Depth (inches/mm): 5.75/146.1
Weight (lbs/kg): 2.2/0.99
Already low-level formatted at the factory with x spare sectors
per cylinder and x spare cylinder per unit.
ZBR = Zone Bit Recording = Variable sectors per track
Seagate reserves the right to change, without notice, product
offerings or specifications. (01/14/99)
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