What Is This Tool?
This converter allows you to translate data transfer values from SCSI (Ultra-2), a high-performance parallel interface standard, to IDE (UDMA mode 1), a legacy Ultra DMA mode of Parallel ATA devices. It facilitates comparison of data transfer rates between these two storage interface standards.
How to Use This Tool?
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Enter the value in SCSI (Ultra-2) data transfer units you want to convert
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Select SCSI (Ultra-2) as the source unit and IDE (UDMA mode 1) as the target unit
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Click the convert button to obtain the equivalent value in IDE (UDMA mode 1)
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Use the result to compare theoretical data transfer capabilities between the two standards
Key Features
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Simple conversion between SCSI (Ultra-2) and IDE (UDMA mode 1) data transfer units
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Based on defined conversion rate: 1 SCSI (Ultra-2) equals 3.2 IDE (UDMA mode 1)
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Useful for IT diagnostics, vintage PC maintenance, and hardware compatibility assessments
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Browser-based and easy to use with no installation required
Examples
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2 SCSI (Ultra-2) converts to 6.4 IDE (UDMA mode 1) based on the 3.2 multiplication factor
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0.5 SCSI (Ultra-2) converts to 1.6 IDE (UDMA mode 1) using the same conversion ratio
Common Use Cases
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Comparing data transfer performance between enterprise-grade SCSI and legacy IDE devices
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Diagnosing BIOS or drive transfer settings on older PATA systems by knowing equivalent rates
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Restoring vintage PCs requiring knowledge of UDMA modes and transfer speeds
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Assessing compatibility and performance in IT infrastructure and data centers
Tips & Best Practices
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Understand that conversion reflects theoretical transfer rates, not actual throughput
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Use this tool for diagnostic and compatibility assessment purposes, not for hardware control
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Check device protocols and physical interface compatibility separately from transfer rate
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Keep in mind environmental and hardware factors can affect real-world performance
Limitations
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Conversion only provides theoretical transfer rate equivalence between different protocols
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Differences in signaling and interface mean actual performance and compatibility vary
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Does not account for cable quality, hardware condition, or environmental influences
Frequently Asked Questions
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What does this converter compare between SCSI (Ultra-2) and IDE (UDMA mode 1)?
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It compares the theoretical data transfer rates using a fixed conversion factor, enabling performance comparison between the two standards.
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Can I use this tool to control hardware transfer settings directly?
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No, this tool is for conversion and comparison only and does not affect hardware settings or compatibility.
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Why is the conversion factor 3.2 between SCSI (Ultra-2) and IDE (UDMA mode 1)?
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It is based on the defined equivalence of their maximum theoretical transfer rates as specified in the standards.
Key Terminology
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SCSI (Ultra-2)
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A parallel Small Computer System Interface standard using Low Voltage Differential signaling for higher data-transfer performance and longer cables.
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IDE (UDMA mode 1)
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An Ultra DMA transfer mode of Parallel ATA that provides a theoretical maximum raw transfer rate of about 25 MB/s for older PATA devices.
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Data Transfer Rate
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The amount of data transmitted per unit time, measured here to compare storage interface performance.
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Low Voltage Differential (LVD)
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Electrical signaling method used by SCSI (Ultra-2) for improved speed and cable length.
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Ultra DMA (UDMA)
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A mode of Parallel ATA interface controlling timing and error-checking for data transfer.