Seagate ST3146707LC SCSI Hard Drive

Capacity: 146GB
Spindle Speed: 10,000RPM
Interface Type: SCSI 80pin SCA-2 (Hot-Swap)
Disk Size: 3.5"x1.0" (Low Profile Hard Drive)
Sustained Throughput (MBps): 59.5
Average Seek Time (read/write ms): 4.7 / 5.3
Electrical Interface Speed: SCSI LVD U320 - 320MBps 16-bit
On-Board Cache:

These drives will fit in all of our hot-swap trays for servers:

The Cheetah 10K.7 lowers cost of ownership with the industry'shighest reliability, designed for full duty cycle applications; Seagate-exclusive Background Media Scan; enhanced Error Correction Code; and low power and cooling requirements. Capacities include 300, 146 and 73 Gbytes, with Ultra320 SCSI or 2 Gbit/sec Fibre Channel interfaces.
Features	Benefits
Highest Reliablity Rating	Reliability has a significant influence on a disc drive's total cost of ownership. Cheetah 10K.7 has an 0.62 percent AFR, the best in the industry.
Full Duty Cycle Reliability	The Cheetah 10K.7 is designed to have the highest reliability, even when in used in demanding applications around the clock, 365 days per year.
Background Media Scan	Background Media Scan, a Seagate-exclusive feature, scans the media during drive idle time to preserve system bandwidth while enabling incipient errors to be corrected before data is lost.
Enhanced Error Correction Code	Decreased bit error rate better maintains performance throughout the life of the drive and results in a lower probability of lost data.
Fluid Dynamic Bearing Motor	No ball bearings means reduced acoustics and improved reliability.
Low Power and Cooling Requirements	Further reduces cost of ownership
Distinctions
Cheetah 10K.7 is designed and manufactured by the same teams that delivered the past six award-winning generations of Cheetah.

Compatibility

ST-3146707LW Ultra320 SCSI Wide (Cheetah 10K.7, LVD)

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  � REAR VIEW �  (ST-3146707LW only)
  �����������ͼ
        (TOP)                  J5 Auxiliary
          ___________________  ���  �1�/���������\
        �( �����������������1)ͳ::::::�� 0 0 0 0 ��
          \�����������ij����/  �  �� 2���5�G�G�12�
       68 pin I/O Cable�        ������
       Connection Male          ������   SCSI ID = 0 (none)
                                �������� SCSI ID = 1
                   pin-11 +5v ��ٳ������ SCSI ID = 2
                   pin-10 GND ���ٳ����� SCSI ID = 4
                                  ������ SCSI ID = 8
      pins 9 & 12 no connection   ������� or pin-8 Activity LED*

* These pins are driven low for 250ms after PWR ON and RESET
  to allow jumper selectable SCSI ID as shown above.


  �����������ͻ
  � REAR VIEW �  (ST-3146707LC only)
  �����������ͼ
                     80 pin I/O and DC Power Wall/bracket Connection
                     �  Female
    J1          /���ij���������������\      TOP (HDA)
     ����������/ �������������������� \����������
              (\�1������������������40/)    BOTTOM

     Notes on 80 pin I/O connector:
       pins  1 -  4 = +12v        41 - 44 = 12v GND
            34 - 36 = +5v         74 - 76 = 5v GND
                 37 = SYNC             77 = LEDC
                 38 = MTRON            78 = DLYDST
                 39 = SCSIA0           79 = SCSIA1
                 40 = SCSIA2           80 = SCSIA3

  Mating connector: AMP US p/n: 2-557103-1 straight-in, Male 80-pin
                                   2-557101-1 right angle to PCB

  �����������ͻ
  � SIDE VIEW �  (ST-3146707LW only)
  �����������ͼ

             FRONT    TOP (HDA)    J2  87654321              �͸
              OF ���������������������������������P�W�A�����͵J1
             DRIVE    BOTTOM           ::::::::              �;
                                       ��������
 Force SingAle-ended (LVD models only) �ٳ������ Term Power (LW only)�
           Start Delay (12 secs * ID) ��ٳ����� Reserved            �
                          Motor Start ���ٳ���� Reserved            �
                        Write Protect ��������� Parity Disable      �
                                                                    �
                                                                    �
                    ��������������������������������Ŀ              �
                    � Termination Power-source Table ����������������
                    ��������������������������������������Ŀ
                    �               ....�����PWA edge����� �
                    �                            2 1       �
                    � A Drive Supplies Bus        �ķ      �
                    �                            ��      �
                    �  (not used on LC model)    ���      �
                    �                             A        �
                    ����������Default no jumper ������������

     Note: LW and LC drives do not have internal terminators or
           any other way of adding internal terminators to the
           drive; use external active termination if required.
           Use active (ANSI SCSI-2 Alternative 2) terminators
           when terminating the bus.  Use active negation
           terminators when terminating a SCSI Ultra2 bus
           operating in Low Voltage Differential (LVD) mode.

  ������������ͻ
  � FRONT VIEW �  (ST-3146707LW/LC)
  ������������ͼ
                                  ��ĴReserved. Shipped with cover installed.
                                  �  �Do not remove. Do not install jumpers
                      TOP (HDA)  ����͸     1
     ��P�W�A��������������������͵::::�::::::���
                 *    BOTTOM     ����;123456
                 �               J6    ������
            LED ��                     ������
                            Remote LED ٳ���� ID 1
                           (pin-11 +A5v) ����� ID 2
                              Reserved �ٳ��� ID 4
                           (pin-10 GND)  ���� ID 8



                            ST-3146707LW
                            Cheetah 10K.7



       UNFORMATTED CAPACITY (GB) ________________
       FORMATTED CAPACITY (GB) __________________146.8
       AVERAGE SECTORS PER TRACK ________________789 rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________363,096
       CYLINDERS ________________________________90,774 user
       HEADS ______PHYSICAL______________________4
       DISCS (2.5 in) ___________________________2
       MEDIA TYPE _______________________________THIN FILM/GMR
       RECORDING METHOD _________________________PRML
       INTERNAL TRANSFER RATE (mbits/sec)________470 to 944
       INTERNAL FORMATTED TRANSFER RATE (MB/sec)_59 to 118
       EXTERNAL TRANSFER RATE (mbyte/sec) _______40 Sync
            Low Voltage Differential(LVD) _______80/320 Sync
       SPINDLE SPEED (RPM) ______________________10,008
       AVERAGE LATENCY (mSEC) ___________________3.00
       BUFFER ___________________________________8MB
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________Ultra-SCSI Wide
              Low Voltage Differential __________Ultra3-SCSI Wide
              ASA II, SCAM level 2 (1 default)
       BYTES PER TRACK __________________________556K avg
       SECTORS PER DRIVE ________________________286,749,488
       TPI (TRACKS PER INCH) ____________________105,000
       BPI (PEAK KBITS PER INCH) ________________658
       AVERAGE ACCESS (ms read/write)____________4.7/5.3
         Drive level without controller overhead
       SINGLE TRACK SEEK (ms read/write) ________0.2/0.5
       MAX FULL SEEK (ms read/write) ____________9.5/10.3
       ANNUALIZED FAILURE RATE (AFR) ____________0.62%
       SHOCK (G's, 11/2/.5 ms):
                operating (Read/Write) ___A_______15/60/
                abnormal ________________________40//
                nonoperating ____________________75/225/120
       ACOUSTICS (Bels typical, sound power) ____3.3
       POWER DISSIPATION (watts/BTUs) Active ____/
                                      Idle ______7.78/26.41
       POWER REQUIREMENTS: +12V START-UP (amps) _1.89
                           +12V TYPICAL (amps) __0.42 idle
                           +5V START-UP (amps) __0.76
                           +5V TYPICAL (amps) ___0.54 idle
                           IDLE (watts) _________

       Physical:
                        Height (inches/mm):      1.0/25.4
                        Width  (inches/mm):     4.00/101.6
                        Depth  (inches/mm):     5.75/146
                        Weight    (lbs/kg):      1.6/0.726


ZBR = Zone Bit Recording = Variable sectors per track


Seagate reserves the right to change, without notice, product 
offerings or specifications. (04/14/2005)