What Is This Tool?
This converter enables users to translate data transfer rates between IDE (PIO mode 4), an older CPU-controlled ATA timing mode, and SCSI (Fast Wide), a faster SCSI-2 interface mode with a wider bus. It assists in comparing and assessing performance across these legacy storage protocols.
How to Use This Tool?
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Enter the data transfer value in IDE (PIO mode 4) units.
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Select IDE (PIO mode 4) as the source unit and SCSI (Fast Wide) as the target unit.
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Click convert to get the equivalent value in SCSI (Fast Wide).
Key Features
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Converts data transfer units between IDE (PIO mode 4) and SCSI (Fast Wide).
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Based on the conversion rate where 1 IDE (PIO mode 4) equals 0.83 SCSI (Fast Wide).
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Supports legacy technology comparison for storage configurations.
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Browser-based and easy to use without installation.
Examples
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1 IDE (PIO mode 4) converts to approximately 0.83 SCSI (Fast Wide).
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10 IDE (PIO mode 4) converts to approximately 8.3 SCSI (Fast Wide).
Common Use Cases
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Configuring or diagnosing legacy IDE and SCSI storage devices in older PCs or embedded systems.
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Benchmarking performance when planning upgrades involving IDE and SCSI interfaces.
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Ensuring compatibility in industrial environments that use historical data transfer methods.
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Connecting legacy disk drives and RAID controllers in servers or workstations.
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Comparing throughput of tape drives, CD/DVD drives, and removable storage linked via SCSI.
Tips & Best Practices
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Use this converter for performance comparison rather than exact transfer speeds.
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Consider physical and system factors like cable quality and device negotiation when interpreting results.
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Verify the mode and timing settings of devices for accurate conversion relevance.
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Account for differences in signaling types and bus widths that affect throughput.
Limitations
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Theoretical throughput values do not always match real-world speeds due to hardware constraints.
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Signal types and bus widths influence actual performance, so conversions are approximations.
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System overhead, cable quality, and negotiation affect achievable transfer rates.
Frequently Asked Questions
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What does IDE (PIO mode 4) represent?
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IDE (PIO mode 4) is a CPU-driven timing mode for ATA/IDE drives defining how data transfers are controlled between the CPU and drive.
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What is SCSI (Fast Wide)?
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SCSI (Fast Wide) is a SCSI-2 mode featuring a 16-bit wide data bus and 10 MHz timing to provide higher data transfer rates compared to original SCSI.
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Why convert IDE (PIO mode 4) rates to SCSI (Fast Wide)?
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Converting helps compare performance and ensure compatibility between legacy ATA and faster SCSI interfaces in storage configurations.
Key Terminology
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IDE (PIO mode 4)
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A Programmed Input/Output mode where the CPU manages data transfer timing for legacy ATA/IDE devices.
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SCSI (Fast Wide)
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A SCSI-2 mode with 10 MHz timing and a 16-bit data bus enabling higher throughput than earlier SCSI implementations.
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Data Transfer Rate
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The amount of data moved from one device to another per unit time, often measured in megabytes per second (MB/s).