Barracuda 18
|
Capacity:
Speed:
Average Read Time:
|
18.21 GB
7200 rpm
7.9 ms |
|
ST-118273N Ultra-SCSI (Barracuda 18)
�����������ͻ
� REAR VIEW � (ST-118273N)
�����������ͼ
50 pin I/O Cable Connection
�
J1�������������������������1� /���������\ TOP (HDA)
͵:::::::::::::::::::::::::�ͳ 0 0 0 0 ���
�������������������������; ��5�G�G�12� BOTTOM
�����������ͻ
� SIDE VIEW � (ST-118273N)
�����������ͼ
FRONT TOP (HDA) J2 87654321 �
OF ���������������������������������P�W�A�����͵J1 Cable
DRIVE BOTTOM :::::::: �;
��������
Enable T-Res (N model only) ٳ������ Terminator Power�
Start Delay (12 secs * ID) �ٳ����� Terminator Power˙
Motor Start ��ٳ���� Reserved �
Write Protect �������� Parity Disable �
�
��������������������������������Ŀ �
� Termination Power-source Table ��������������������
����������������������������������������������Ŀ
� �����....�����....�����PWA edge����ͳ
� 2 1 2 1 2 1 �
� A Drive Supplies Bus �ķ �ķ �
� B Drive Supplies Own �� ��� ���� �
� C Bus Supplies Drive ��� ��� ���� �
� A+B is valid A B C �
�������������������������������Default����������
Note: ND drives do not have internal terminators or any other
way of adding internal terminators to the drive; use
external active termination if required.
������������ͻ
� FRONT VIEW � (ST-118273N)
������������ͼ
��ĴReserved. Shipped with cover installed.
� �Do not remove. Do not install jumpers
TOP (HDA) ���� 1
��P�W�A��������������������͵::::�::::::���
* BOTTOM ����;�����2
� J6 ������
LED �� ������
Remote LED ٳ���� ID 1
(pin-11 +5v) ����� ID 2
Reserved �ٳ��� ID 4
(pin-10 ground) �
Reserved ���
ST-118273N
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) _______20 Sync
SPINDLE SPEED (RPM) ______________________7,200
AVERAGE LATENCY (mSEC) ___________________4.17
BUFFER (/optional)________________________512/2048 KByte
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________Ultra-SCSI
ASA II, SCAM level 2
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. (04/14/98)
|
