Barracuda 2LP Product Manual, Rev. D 7
4.0 Standard features
Barracuda 2LP drives have the following standard features:
• Integrated SCSI controller
• Single-ended or differential SCSI drivers and receivers
• Asynchronous and synchronous data-transfer protocols
• Firmware downloadable using a SCSI interface
• Selectable sector size from 180 to 4,096 bytes per sector
• Programmable sector-reallocation scheme
• Flawed sector reallocation at format time
• Programmable auto-write and auto-read reallocation
• Reallocation of defects on command (post format)
• 96-bit Reed-Solomon error-correction code
• Sealed head and disc assembly (HDA)
• No preventive maintenance or adjustments required
• Dedicated head-landing zone
• Automatic shipping lock
• Automatic thermal compensation
• 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
• Active IC terminators (N/W models only)
• Synchronous spindle capability
• 512 Kbyte data buffer (see Section 5.5)
• Low audible noise for office environment
• Low power consumption
4.1 Performance
• Programmable multi-segmentable cache buffer
• 7,200 RPM spindle; average latency = 4.17 msec
• Command queuing of up to 64 commands
• Background processing of queue
• Supports start and stop commands
• Provides synchronized spindle capability
• Adaptive seek velocity; improved seek performance
4.1.1 Reliability
• 800,000 hour MTBF
• LSI circuitry
• Balanced low-mass rotary voice-coil actuator
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