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� J01 - Terminator Power Jumpers ������������������Ŀ
���������������������������������� �
Terminator power from the drive. �1�ķ
(default) ���
� �
Terminator power from pin 26 on the �ķ
SCSI bus. ����
���
Terminator to the SCSI bus on pin 26. �ķ
����
���
Terminator power to the SCSI bus and ���ķ
drive. �����
����
Note: ST-11950ND (differential model) does not come with any
provision to use Termination resistors. Therefore, SCSI bus
needs to be externally terminated.
ST-11950N
UNFORMATTED CAPACITY (MB) ________________2030
FORMATTED CAPACITY (xx SECTORS) (MB) _____1689
AVERAGE SECTORS PER TRACK ________________81 rounded down
ACTUATOR TYPE ____________________________ROTARY VOICE COIL
TRACKS ___________________________________40,665
CYLINDERS ________________________________2,706 user
HEADS ______PHYSICAL______________________15
DISCS (3.5 in) ___________________________8
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (1,7)
INTERNAL TRANSFER RATE (mbits/sec)________34.3 to 56.5
EXTERNAL TRANSFER RATE (mbyte/sec) _______5 Async
EXTERNAL TRANSFER RATE (mbyte/sec) _______10 Sync
SPINDLE SPEED (RPM) ______________________7,200
AVERAGE LATENCY (mSEC) ___________________4.17
BUFFER ___________________________________1024 KByte
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________SCSI-2 FAST
BYTES PER TRACK __________________________50,888 average
SECTORS PER DRIVE ________________________3,291,790
TPI (TRACKS PER INCH) ____________________3,047
BPI (BITS PER INCH) ______________________52,187
AVERAGE ACCESS (ms) (read/write)__________8.0/9.0
Drive level without controller overhead
SINGLE TRACK SEEK (ms) ___________________0.6/0.9
MAX FULL SEEK (ms) _______________________17/19
MTBF (power-on hours) ____________________500,000
POWER REQUIREMENTS: +12V START-UP (amps) _2.18
+12V TYPICAL (amps) __0.83 idle
+5V START-UP (amps) __1.0
+5V TYPICAL (amps) ___0.76 idle
IDLE (watts) _________12.5
LANDING ZONE (cyl) _______________________AUTO PARK
IBM AT DRIVE TYPE ________________________0 or NONE