What Is This Tool?
This converter tool helps translate data transfer mode values from IDE (PIO mode 4) to SCSI (Sync). It facilitates performance comparison and evaluation between older CPU-driven IDE timings and faster synchronous SCSI protocols.
How to Use This Tool?
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Enter the value in IDE (PIO mode 4) units you want to convert
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Select SCSI (Sync) as the target data transfer mode
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Click the convert button to see the equivalent SCSI (Sync) value
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Use the results to analyze or compare storage device performance
Key Features
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Converts IDE (PIO mode 4) transfer mode values into SCSI (Sync) equivalents
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Browser-based and user-friendly interface for quick conversions
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Supports performance analysis for legacy and modern storage protocols
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Provides predefined conversion rate based on standardized transfer mode metrics
Examples
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1 IDE (PIO mode 4) converts to 3.32 SCSI (Sync)
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2 IDE (PIO mode 4) converts to 6.64 SCSI (Sync)
Common Use Cases
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Configuring or diagnosing legacy IDE/ATA drives and BIOS or driver settings
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Benchmarking legacy storage devices for performance comparisons
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Assessing upgrade paths for older PC or embedded systems
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High-throughput storage I/O evaluation on servers and workstations
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Setting up RAID controllers and storage arrays needing consistent transfer rates
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Negotiating transfer speeds for legacy SCSI devices
Tips & Best Practices
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Understand that conversion reflects relative performance, not exact throughput
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Use conversion results to aid system migration and upgrade evaluations
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Apply conversions when analyzing compatibility in retro or industrial computing
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Complement this tool’s results with device-specific benchmarks for precise assessments
Limitations
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Conversion indicates relative transfer timing performance, not direct data amounts
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IDE (PIO mode 4) and SCSI (Sync) characterize protocols, not standardized units
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Exact throughput can vary depending on device implementation and negotiated parameters
Frequently Asked Questions
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What does IDE (PIO mode 4) mean?
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IDE (PIO mode 4) is a CPU-controlled timing mode for ATA/IDE drives with a maximum theoretical throughput around 16.7 MB/s, used mainly in older storage devices.
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Why convert IDE (PIO mode 4) to SCSI (Sync)?
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Converting helps compare legacy IDE performance to synchronous SCSI modes, useful for migration, upgrade evaluation, or interoperability tasks.
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Is this conversion exact in data quantities?
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No, the conversion reflects relative transfer mode performance rather than precise data amounts, since these modes define timing protocols.
Key Terminology
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IDE (PIO mode 4)
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A CPU-controlled timing mode for ATA/IDE devices where data transfers are managed directly by the CPU with a theoretical max throughput of approximately 16.7 MB/s.
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SCSI (Sync)
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A synchronous SCSI transfer mode where data is transferred in sync with a negotiated clock, resulting in higher throughput and more deterministic timing than asynchronous modes.