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Seagate ST318452FC Cheetah X15 FC 
18.3GB FC-AL 15,000RPM Hard Drive



Description:


Cheetah X15 FC drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a Fibre Channel interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers.

Features:

  • 2-Gbit Fibre Channel interface. For 2 gigabit operation, the block size must be divisable by 8.
  • Integrated dual port FC-AL controller
  • Concurrent dual port transfers
  • Support for FC arbitrated loop, private and public attachment
  • Differential copper FC drivers and receivers
  • Downloadable firmware using the FC-AL interface
  • Supports SCSI enclosure services via interface connector
  • 128-deep task set (queue)
  • Supports up to 32 initiators
  • Drive selection ID and configuration options are set on the FC-AL backpanel or through interface commands. Jumpers are not used on the drive.
  • Supports SCSI Enclosure Services through the interface connector
  • Fibre Channel worldwide name uniquely identifies the drive and each port
  • User-selectable logical block size (512 to 704 bytes per logical block). For 2 gigabit operation, the block size must be divisable by 8.
  • Selectable frame sizes from 256 to 2,112 bytes
  • Industry standard 3.5-inch low profile form factor dimensions
  • Programmable logical block reallocation scheme
  • Flawed logical block reallocation at format time
  • Programmable auto write and read reallocation
  • Reed-Solomon error correction code
  • Sealed head and disc assembly (HDA)
  • No preventive maintenance or adjustments required
  • Dedicated head landing zone
  • Automatic shipping lock
  • Embedded Grey Code track address to eliminate seek errors
  • Self-diagnostics performed at power on
  • 1:1 interleave
  • Zone bit recording (ZBR)
  • Vertical, horizontal, or top down mounting
  • Dynamic spindle brake
  • 8,192 Kbyte data buffer. See Section 4.5
  • Embedded servo design
  • Reallocation of defects on command (Post Format)
  • Fibre Channel interface transports SCSI protocol



Specifications:

UNFORMATTED CAPACITY (GB) 23.7
FORMATTED CAPACITY (GB) 18.35
AVERAGE SECTORS PER TRACK 484 rounded down
ACTUATOR TYPE ROTARY VOICE COIL
TRACKS 73,988
CYLINDERS 18,497 user
HEADS (PHYSICAL) 4
DISCS (3.0 in) 2
MEDIA TYPE THIN FILM/GMR
RECORDING METHOD PRML 16/17 EPR4
INTERNAL TRANSFER RATE (mbits/sec) 548 to 706
INTERNAL FORMATTED TRANSFER RATE (MB/sec) 51.8 to 68.1
EXTERNAL TRANSFER RATE (mbyte/sec/port) 106 Sync
SPINDLE SPEED (RPM) 15k
AVERAGE LATENCY (mSEC) 2.0
BUFFER 8MB
INTERFACE
Fibre Channel - Arbitrated Loop
FC-AL
BYTES PER TRACK 316,155
SECTORS PER DRIVE 35,843,670
TPI (TRACKS PER INCH) 38,000
BPI (PEAK KBITS PER INCH) 482
AVERAGE ACCESS (ms read/write) 3.6/4.2
SINGLE TRACK SEEK (ms read/write) 0.4/0.8
MAX FULL SEEK (ms read/write) 7.0/8.0
MTBF (power-on hours) 1,200,000
POWER REQUIREMENTS:
  • +12V START-UP (amps) _1.44
  • +12V TYPICAL (amps) __0.51 idle
  • +5V START-UP (amps) __0.90
  • +5V TYPICAL (amps) ___0.83 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): 1.5/0.68


  • Product Content:

    • Seagate ST318452FC Cheetah X15 FC 18.3GB FC-AL 15,000RPM 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: Contact us for availability

    Seagate ST318452FC Cheetah X15 FC 18.3GB FC-AL 15,000RPM Hard Drive
    ST318452FC
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