Cheetah 18LP : ST318203FC
Cheetah 18LP
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Capacity:
Speed:
Average Read Time:
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18.21 GB
10000 rpm
5.4 ms |
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ST-318203FC Fibre Channel FC-AL, Dual Port (Cheetah 18 LP)
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� REAR VIEW � ST-318203FC
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40 pin I/O and DC Power Wall/bracket Connection
� Female
J1 /���ij���������\ TOP (HDA)
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(\�1������������20/) BOTTOM
Notes on 40 pin I/O connector:
+12v = pins 2, 3, 4, 21
+5v = pins 19, 20, 40
GND = pins 6, 22, 23, 26, 29, 32, 35
Mating FC connector: AMP US p/n: 787317-1 straight-in, Male 40-pin
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� FRONT VIEW � (ST-318203FC)
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Reserved. Shipped with cover installed.
Do not remove. Do not install jumpers
� ������ Reserved
� ������ Fault LED
� ������ Port B Bypass LED
� ������ Port A Bypass LED
TOP (HDA) ���� ����1
��P�W�A��������������������͵::::�::::::���
* BOTTOM ����;������
� J6 ��� ��� Ground
LED �� ������� Active LED
������� Ground
������� Remote LED (pin-11 +5v)
ST318203FC drives have two independent FC-AL ports. These
ports may be connected on independent loops or on the same
loop. Port A and Port B may be connected in any order or
combination.
ST-318203FC
UNFORMATTED CAPACITY (GB) ________________21.6
FORMATTED CAPACITY (GB) __________________18.21
AVERAGE SECTORS PER TRACK ________________302 rounded down
ACTUATOR TYPE ____________________________ROTARY VOICE COIL
TRACKS ___________________________________117,612
CYLINDERS ________________________________9,801 user
HEADS ______PHYSICAL______________________12
DISCS (3.0 in) ___________________________6
MEDIA TYPE _______________________________THIN FILM/MR
RECORDING METHOD _________________________PRML 16/17 EPR4
INTERNAL TRANSFER RATE (mbits/sec)________193 to 308
INTERNAL FORMATTED TRANSFER RATE (MB/sec)_22.7 to 36.2
EXTERNAL TRANSFER RATE (mbyte/sec/port)___106.3 Sync
SPINDLE SPEED (RPM) ______________________10,016
AVERAGE LATENCY (mSEC) ___________________2.99
BUFFER (/optional)________________________1024/ KByte
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________FC-AL
Fibre Channel - Arbitrated Loop, ASA II
BYTES PER TRACK __________________________153,284-229,045
SECTORS PER DRIVE ________________________35,566,480
TPI (TRACKS PER INCH) ____________________12,580
BPI (PEAK KBITS PER INCH) ________________252
AVERAGE ACCESS (ms read/write)____________5.4/6.0
Drive level without controller overhead
SINGLE TRACK SEEK (ms read/write) ________0.7/0.9
MAX FULL SEEK (ms read/write) ____________12.2/13.2
MTBF (power-on hours) ____________________1,000,000
SHOCK (G's, 11/2/.5 ms):
operating (Read/Write) __________5
abnormal ________________________10
nonoperating ____________________75/175/100
ACOUSTICS (Bels typical, sound power) ____4.3
POWER DISSIPATION (watts/BTUs) Active ____/
Idle ______11.8/40
POWER REQUIREMENTS: +12V START-UP (amps) _1.4
+12V TYPICAL (amps) __0.57 idle
+5V START-UP (amps) __1.1
+5V TYPICAL (amps) ___1.0 idle
IDLE (watts) _________
LANDING ZONE (cyl) _______________________AUTO PARK
IBM AT DRIVE TYPE ________________________0 or NONE
Physical:
Height (inches/mm): 1.0/25.4
Width (inches/mm): 4.00/101.6
Depth (inches/mm): 5.75/146
Weight (lbs/kg): 1.3/0.589
Already low-level formatted at the factory with x spare sectors at
the end of each x cylinder region.
ZBR = Zone Bit Recording = Variable sectors per track
Seagate reserves the right to change, without notice, product
offerings or specifications. (03/24/99)
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