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Seagate ST318438LW Barracuda 36ES2 - 19.92GB 
Ultra SCSI Wide 68-Pin 7200RPM Hard Drive




Description:

Barracuda 36ES2 drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a wide SCSI Ultra160 interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers.

Ultra160 SCSI uses negotiated transfer rates. These transfer rates will occur only if your host adapter supports these data transfer rates and is compatible with the required hardware requirements of the I/O circuit type. This drive also operates at Ultra160 data transfer rates.



Features:

  • Integrated Ultra160 SCSI controller
  • Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD)
  • 16 bit I/O data bus on LW models. 8 bit I/O data bus on the N model.
  • 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 maximum burst correction length of 240 bits with a guaranteed burst correction length of 233 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
  • 2,048 kbyte data buffer
  • Drive Self Test (DST)



Specifications:



FORMATTED CAPACITY (GB) 19.923
AVERAGE SECTORS PER TRACK 748 rounded down
ACTUATOR TYPE ROTARY VOICE COIL
TRACKS 52,000
CYLINDERS 26,000 user
HEADS (PHYSICAL) 2
DISCS (3.5 in) 1
MEDIA TYPE THIN FILM/GMR
RECORDING METHOD PRML 16/17 EPR4
INTERNAL TRANSFER RATE (mbits/sec) 434 to 500
INTERNAL FORMATTED TRANSFER RATE (MB/sec) 32.3 to 52.2
EXTERNAL TRANSFER RATE (mbyte/sec) 40 Sync
Low Voltage Differential(LVD) 80/160 Sync
SPINDLE SPEED (RPM) 7,200
AVERAGE LATENCY (mSEC) 4.17
BUFFER
Read Look-Ahead, Adaptive, Multi-Segmented Cache
2048KB
INTERFACE Ultra SCSI Wide
Low Voltage Differential
ASA II, SCAM level 2 (1 default)
Ultra3-SCSI Wide
BYTES PER TRACK 401Kbytes avg
SECTORS PER DRIVE 38,914,048
TPI (TRACKS PER INCH) 58,480
BPI (PEAK KBITS PER INCH) 480
AVERAGE ACCESS (ms read/write)
Drive level without controller overhead4
8.5/9.3
SINGLE TRACK SEEK (ms read/write) 0.6/1.0
MAX FULL SEEK (ms read/write) 10.0/10.7
MTBF (power-on hours) 800,000
POWER REQUIREMENTS:
  • +12V START-UP (amps) 2.05
  • +12V TYPICAL (amps) 0.31 idle
  • +5V START-UP (amps) 0.82
  • +5V TYPICAL (amps) 0.78 idle
  • Physical:
  • Height (inches/mm): 1.0/25.4
  • Width (inches/mm): 4.00/101.6
  • Depth (inches/mm): 5.75/146
  • Weight (lbs/kg): 1.2/0.54



  • Product Content:


    • Seagate ST318438LW Barracuda 36ES2 - 19.92GB Ultra SCSI Wide 68-Pin 7200RPM Hard Drive

    Before you purchase this item, please ensure that you have verified compatibility with system by visiting the manufacturer's web site.
    We assume no responsibility and will not accept full refunds for items purchased that are not compatible with your system configuration
    .



    Conditions:





    Warranty:


    • 30 Day



    Availability: Usually ships the same business day

    Seagate ST318438LW Barracuda 36ES2 - 19.92GB Ultra SCSI Wide 68-Pin 7200RPM Hard Drive
    ST318438LWP.O & Phone Orders: $99.00ON-LINE SPECIAL: $79.00
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