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Seagate ST318203LC SCSI Hard Drive

Item Number: SGT-ST318203LC-UP-OE
Manufacturer's Part Number: ST318203LC
Contact us about ST318203LCGet help regarding ST318203LC

Seagate Cheetah 18LP 18GB 10K U160 80pin SCA-2 SCSI Hard Drive ST318203LC - Used Pull OEM

ST318203LC SCSI Hard Drive Photo

ST318203LC SCSI Hard Drive Photo ST318203LC SCSI Hard Drive Photo ST318203LC SCSI Hard Drive Photo ST318203LC SCSI Hard Drive Photo
Price: $59.95
Condition: Used Pull - What does this mean?
Warranty: 1 Year DiscTech - What does this mean?

Capacity: 18GB
Spindle Speed: 10,000RPM
Interface Type: SCSI 80pin SCA-2 Hot-Swap
Disk Size: 3.5inx1.0in LFF Hard Drive
Sustained Throughput (MBps): 29.5
Average Seek Time (read/write ms): 5.4
Electrical Interface Speed: SCSI LVD U160 - 160MBps 16-bit
On-Board Cache: 1MB

Used Pull - What does this mean?
1 Year DiscTech - What does this mean?

The Cheetah 18LP family has the following standard features:

• Integrated Ultra/Ultra2 SCSI controller (ST318203 and ST39103 models)
• Integrated Ultra160 SCSI controller (ST318233 and ST39133 models)
• Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD)
• 16 bit I/O data bus
• Asynchronous and synchronous data transfer protocol
• Firmware downloadable via SCSI interface
• Selectable even byte sector sizes from 512 to 4,096 bytes/sector
• Programmable sector reallocation scheme
• Flawed sector reallocation at format time
• Programmable auto write and read reallocation
• Reallocation of defects on command (post format)
• Enhanced ECC correction capability up to 185 bits
• Sealed head and disc assembly
• No preventative maintenance or adjustment required
• Dedicated head landing zone
• Embedded servo design
• Self diagnostics performed when power is applied to the drive
• 1:1 Interleave
• Zoned bit recording (ZBR)
• Vertical, horizontal, or top down mounting
• Dynamic spindle brake
• 1,024 kbyte data buffer (4,096 kbytes on LWV/LCV models)
• Hot plug compatibility (Section lists proper host connector needed) for “LC’ and “LCV’ model drives
• SCAM (SCSI Configured Automatically) plug-n-play level 2 compliant, factory set to level 1

Media characteristics

• The media used on the drive has a diameter of approximately 3.3 inches (84 mm).
• The aluminum substrate is coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection.


• Supports industry standard Ultra2 SCSI interface (ST318203 and ST39103 models)
• Supports industry standard Ultra160 SCSI interface (ST318233 and ST39133 models)
• Programmable multi-segmentable cache buffer (see Section 3.1)
• 10,016 RPM spindle. Average latency = 2.99 ms
• Command queuing of up to 64 commands
• Background processing of queue
• Supports start and stop commands (spindle stops spinning)


• 1,000,000 hour MTBF
• LSI circuitry
• Balanced low mass rotary voice coil actuator
• Incorporates industry-standard Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.)


                         SEAGATE TECHNOLOGY, INC.
                            (C)opyright 1998

ST-318203LW Ultra2 SCSI Wide (Cheetah 18LP, LVD)

  º REAR VIEW º  (ST-318203LW only)
        (TOP)                  J5 Auxiliary
          ___________________  ÚÄÄ  Ä1¿/ÍÍÍÍÍÍÍÍÍ\
        Í( ×××××××××××××××××1)ͳ::::::³³ 0 0 0 0 ÆÍ
       68 pin I/O CableÙ        ³³³³³³
       Connection Male          ³³³³³³   SCSI ID = 0 (none)
                                ³³³³³ÀÄÄ SCSI ID = 1
                   pin-11 +5v ÄÄÙ³³³ÀÄÄÄ SCSI ID = 2
                   pin-10 GND ÄÄÄÙ³ÀÄÄÄÄ SCSI ID = 4
                                  ÃÄÄÄÄÄ SCSI ID = 8
      pins 9 & 12 no connection   ÀÄÄÄÄÄÄ 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.

  º REAR VIEW º  (ST-318203LC only)
                     80 pin I/O and DC Power Wall/bracket Connection
                     ³  Female
    J1          /ÄÄÄijÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ\      TOP (HDA)
     ÍÍÍÍÍÍÍÍÍÍ/ ×××××××××××××××××××× \ÍÍÍÍÍÍÍÍÍÍ
              (\Ä1ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ40/)    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

  º SIDE VIEW º  (ST-318203LW/LC)

             FRONT    TOP (HDA)    J2  87654321              Õ͸
             DRIVE    BOTTOM           ::::::::              Ô;
 Force Single-ended (LVD models only) ÄÙ³³³³³³À Term Power (LW only)¿
           Start Delay (12 secs * ID) ÄÄÙ³³³³ÀÄ Reserved            ³
                          Motor Start ÄÄÄÙ³³ÀÄÄ Reserved            ³
                        Write Protect ÄÄÄÄÙÀÄÄÄ Parity Disable      ³
                    ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿              ³
                    ³ Termination Power-source Table ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
                    ³               ....ÍÍÍÍÍPWA edgeÍÍÍÍÍ ³
                    ³                            2 1       ³
                    ³ A Drive Supplies Bus        ÖÄ·      ³
                    ³                            øºøº      ³
                    ³  (not used on LC model)    øÓø½      ³
                    ³                             A        ³
                    ÀÄÄÄÄÄÄÄÄÄDefault no jumper ÄÄÄÄÄÄÄÄÄÄÄÙ

     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.

  º FRONT VIEW º  (ST-318203LW/LC)
                                  ÚÄÄ´Reserved. Shipped with cover installed.
                                  ³  ÀDo not remove. Do not install jumpers
                      TOP (HDA)  ÕØÍÍ͸     1
                 *    BOTTOM     ÔÍÍÍ;123456
                 ³               J6    ³³³³³³
            LED ÄÙ                     ³³³³³³
                            Remote LED Ù³³³³À ID 1
                           (pin-11 +5v) ³³³ÀÄ ID 2
                              Reserved ÄÙ³ÀÄÄ ID 4
                           (pin-10 GND)  ÀÄÄÄ ID 8


       UNFORMATTED CAPACITY (GB) ________________21.6
       FORMATTED CAPACITY (GB) __________________18.21
       AVERAGE SECTORS PER TRACK ________________303 rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________117,612
       CYLINDERS ________________________________9,801 user
       HEADS ______PHYSICAL______________________12
       DISCS (3.0 in) ___________________________6
       MEDIA TYPE _______________________________THIN FILM/MR
       RECORDING METHOD _________________________PRML 16/17 EPR4
       INTERNAL TRANSFER RATE (mbits/sec)________193 to 308
       EXTERNAL TRANSFER RATE (mbyte/sec) _______40 Sync
            Low Voltage Differential(LVD) _______80 Sync
       SPINDLE SPEED (RPM) ______________________10,016
       AVERAGE LATENCY (mSEC) ___________________2.99
       BUFFER (/optional)________________________1024/4096 KByte
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________Ultra2 SCSI
              ASA II, SCAM level 2 (1 default)
       BYTES PER TRACK __________________________153,284-229,045
       SECTORS PER DRIVE ________________________35,566,480
       TPI (TRACKS PER INCH) ____________________12,580
       BPI (PEAK KBITS PER INCH) ________________252
       AVERAGE ACCESS (ms read/write)____________5.4/6.0
         Drive level without controller overhead
       SINGLE TRACK SEEK (ms read/write) ________0.7/0.9
       MAX FULL SEEK (ms read/write) ____________12.2/13.2
       MTBF (power-on hours) ____________________1,000,000
       SHOCK (G's, 11/2/.5 ms):
                operating (Read/Write) __________5
                abnormal ________________________10
                nonoperating ____________________75/200/100
       ACOUSTICS (Bels typical, sound power) ____4.3
       POWER DISSIPATION (watts/BTUs) Active ____/
                                      Idle ______10.75/36.7
       POWER REQUIREMENTS: +12V START-UP (amps) _2.4
                           +12V TYPICAL (amps) __0.6 idle
                           +5V START-UP (amps) __1.03
                           +5V TYPICAL (amps) ___0.71 idle
                           IDLE (watts) _________
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE

                        Height (inches/mm):      1.0/25.4
                        Width  (inches/mm):     4.00/101.6
                        Depth  (inches/mm):     5.75/146
                        Weight    (lbs/kg):      1.3/0.589

Already low-level formatted at the factory with x spare sectors at
the end of each x cylinder region.  

ZBR = Zone Bit Recording = Variable sectors per track

Seagate reserves the right to change, without notice, product 
offerings or specifications. (01/11/2000)

Click here to view the manufacturers item description/brochure

These drives will fit in any of our SCSI hard drive trays:

Dell 8FKXC / 08FKXC SAS / SATA 2.5" Hard Drive Tray/Caddy

Brand New - $39.00

Dell F238F / X968D SAS / SATA Hard Drive Tray/Caddy

Brand New - $59.00

Dell KG1CH 0KG1CH 58CWC SAS / SATA 3.5" Hard Drive Tray/Caddy

Brand New - $45.00

Dell F238F / X968D SAS / SATA Hard Drive Tray/Caddys

Used Pull - $29.00

Dell F238F / X968D SATA / SAS Hard Drive Tray

New Pull - $49.00

Dell CC852 Tray and PN939 Interposer Kit

Brand New - $75.00