�����������������ͻ
� RIGHT SIDE VIEW �
�����������������ͼ
BACK � J2 87654321 TOP (HDA) FRONT
OF J1�����������������������P�W�A����������������������� OF
DRIVE �; :::::::: BOTTOM DRIVE
��������
�Terminator Power ٳ������ Reserved
ڴTerminator Power �ٳ����� Start Delay (16 secs * ID)
� Factory Use ��ٳ���� Motor Start
� Parity Enable ������� Write Protect
�
�
� ��������������������������������Ŀ
�Ĵ Termination Power-source Table �
���������������������������������������������Ŀ
� 8 7 8 7 8 7 �
� �ķ �ķ A Drive Supplies Bus �
� ���� ���� ��� B Drive Supplies Own �
� ��� ��� � �� C Bus Supplies Drive �
� A B C �
������....�����....�����PWA edge����� �
� �
�������Default����������������������������������
����������������ͻ
� LEFT SIDE VIEW �
����������������ͼ If these ID jumpers are used,
then ID jumpers shown in front
view ARE NOT USED.
FRONT TOP (HDA) J5 ���1� �BACK
OF ��������P�W�A������������������������������͵:::�͵J1 OF
DRIVE BOTTOM ���; �;DRIVE
���
Note: On early drives � ID 1 �ٳ�� ID 4
with PCB# 75782480 these� ID 2
ID jumpers are reversed.��� ID 4 ID 1
������������ͻ
� FRONT VIEW �
������������ͼ
TOP (HDA) J6 ������1�
��P�W�A�������������������������͵::::::��
* BOTTOM ������;
� 123456
LED �� ������
ID 4 ٳ���� Reserved
ID 2 �ٳ��� Remote LED (pin-3 +5v)
ID 1 ����� Spindle Synchronization
(pin-6 REF SIG+)
If these ID jumper are used, then
ID jumpers shown in left side
view ARE NOT USED.
ST-3500N
UNFORMATTED CAPACITY (MB) ________________502
FORMATTED CAPACITY (xx SECTORS) (MB) _____426
AVERAGE SECTORS PER TRACK ________________
ACTUATOR TYPE ____________________________ROTARY VOICE COIL
TRACKS ___________________________________10,829
CYLINDERS __PHYSICAL______________________1,547 (user)
HEADS ______PHYSICAL______________________7
DISCS (3.5 in) ___________________________4
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (1,7)
INTERNAL TRANSFER RATE (mbits/sec)________21.7 to 31.9
EXTERNAL TRANSFER RATE (mbyte/sec) _______4 Async
EXTERNAL TRANSFER RATE (mbyte/sec) _______10 Sync
SPINDLE SPEED (RPM) ______________________4,535
AVERAGE LATENCY (mSEC) ___________________6.61
BUFFER ___________________________________240 KByte
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________SCSI-2 FAST
SECTORS PER DRIVE ________________________
TPI (TRACKS PER INCH) ____________________2150
AVERAGE ACCESS (ms) (read/write)__________9.9/11.4
SINGLE TRACK SEEK (ms) ___________________2
MAX FULL SEEK (ms) _______________________26
MTBF (power-on hours) ____________________200,000
POWER REQUIREMENTS: +12V START-UP (amps) _1.5
+12V TYPICAL (amps) __0.4
+5V START-UP (amps) __
+5V TYPICAL (amps) ___0.2
TYPICAL (watts) ______5
MAXIMUM (watts) ______
WRITE PRECOMP (cyl) ______________________N/A
REDUCED WRITE CURRENT (cyl) ______________N/A
LANDING ZONE (cyl) _______________________AUTO PARK
IBM AT DRIVE TYPE ________________________0 or NONE
Already low-level formatted at the factory with one spare sector
per track and two spare cylinders/unit.
ZBR = Zone Bit Recording = Variable sectors per track
Seagate reserves the right to change, without notice, product
offerings or specifications. (08/08/94)