Barracuda 2LP
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Capacity:
Speed:
Average Read Time:
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2.15 GB
7200 rpm
8 ms |
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ST-32550N SCSI-2 Fast (Barracuda 2LP)
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� REAR VIEW � (ST-32550N/ND)
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50 pin I/O Cable Connection
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͵:::::::::::::::::::::::::�ͳ 0 0 0 0 ���
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These pins not on differential --> (o o) back
model ND ������� o o
� o o front
� 2 1
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�� J1 Terminator options ��� (single-ended) ����������Ŀ
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� �o�o� o�o� �o�o �o�o� o o �
� 2���1 2 ��1 2; 1 2���1 2 1 �
� A B C D E �
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A - Term. power from drive (default)
B - Term. power to SCSI bus (only option available for differential ND)
C - Term. power from SCSI bus
D - Term. power to SCSI bus and drive
E - Enable SCSI terminator (jumper on pins 5-6)
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� RIGHT SIDE VIEW � (ST-32550N)
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BACK � J2 123456789 TOP (HDA) FRONT
OF I/O�����������������������P�W�A����������������������� OF
DRIVE �; ::::::::: BOTTOM DRIVE
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1-2 Reserved ���ٳ�������� Reserved 7-9
3 Parity Disable ����ٳ������� Delay Motor Start 6
4 Write Protect ������������� Motor Start Enable 5
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� FRONT VIEW � (ST-32550N)
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J4
TOP (HDA) 1
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BOTTOM ����������
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Reserved ����ٳ������ Reserved
ID 4 �����ٳ����� Remote LED (pin-3 +5v)
ID 2 ������ٳ���� Spindle Synchronization
ID 1 �������� (pin-6 REF SIG+)
ST-32550N
Barracuda 2LP
UNFORMATTED CAPACITY (MB) ________________2541.3
FORMATTED CAPACITY (xx SECTORS) (MB) _____2147.4
AVERAGE SECTORS PER TRACK ________________108 rounded down
ACTUATOR TYPE ____________________________ROTARY VOICE COIL
TRACKS ___________________________________38,610
CYLINDERS ________________________________3,510 user
HEADS ______PHYSICAL______________________11
DISCS (3.5 in) ___________________________6
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (1,7)
INTERNAL TRANSFER RATE (mbits/sec)________49.4 to 72.0
EXTERNAL TRANSFER RATE (mbyte/sec) _______5 Async
EXTERNAL TRANSFER RATE (mbyte/sec) _______2.5 to 10 Sync
SPINDLE SPEED (RPM) ______________________7,200
AVERAGE LATENCY (mSEC) ___________________4.17
BUFFER ___________________________________512 KByte
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________SCSI-2 FAST
ASA II
BYTES PER TRACK __________________________64,160 average
SECTORS PER DRIVE ________________________
TPI (TRACKS PER INCH) ____________________4,048
BPI (BITS PER INCH) ______________________72,680
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) ____________________800,000
SHOCK (G's):
operating (Read/Write) __________2
nonoperating ____________________50
ACOUSTICS (typ/max dBA) __________________4.7/
POWER DISSIPATION (watts/BTUs) Active ____11/35
Idle ______9/31
POWER REQUIREMENTS: +12V START-UP (amps) _1.26
+12V TYPICAL (amps) __0.88 idle
+5V START-UP (amps) __0.91
+5V TYPICAL (amps) ___0.33 idle
IDLE (watts) _________
LANDING ZONE (cyl) _______________________AUTO PARK
IBM AT DRIVE TYPE ________________________0 or NONE
Physical:
Height (inches/mm): 1.00/25.4
Width (inches/mm): 4.00/101.6
Depth (inches/mm): 5.75/146.05
Weight (lbs/g): 1.2/545
Already low-level formatted at the factory with 9 spare sectors
per cylinder and 1 spare cylinder per unit.
ZBR = Zone Bit Recording = Variable sectors per track
Seagate reserves the right to change, without notice, product
offerings or specifications. (05/20/96)
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