What Is This Tool?
This converter enables users to translate data transfer rates from IDE (DMA mode 2), a legacy PATA/IDE mode, into equivalent values for SCSI (Ultra-2), a parallel SCSI standard, facilitating comparisons and device configuration in various computing environments.
How to Use This Tool?
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Enter the data transfer amount in IDE (DMA mode 2) units
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Select IDE (DMA mode 2) as the source unit and SCSI (Ultra-2) as the target unit
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Click convert to see the equivalent transfer rate in SCSI (Ultra-2)
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Use the results to assist with performance tuning or migration planning
Key Features
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Converts data transfer values between IDE (DMA mode 2) and SCSI (Ultra-2) units
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Supports legacy and enterprise storage interface comparisons
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Browser-based and simple to use for quick calculations
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Displays conversion based on a fixed rate specific to these legacy standards
Examples
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5 IDE (DMA mode 2) converts to approximately 1.0375 SCSI (Ultra-2)
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10 IDE (DMA mode 2) converts to approximately 2.075 SCSI (Ultra-2)
Common Use Cases
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Configuring or diagnosing legacy PATA/IDE drives to use DMA modes
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Comparing transfer rates when migrating from legacy IDE to SCSI storage
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Assessing performance during enterprise server upgrades involving SCSI peripherals
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Maintaining or troubleshooting legacy systems using mixed storage standards
Tips & Best Practices
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Ensure correct unit selection to avoid misinterpretation of data rates
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Use the converter when planning hardware migration between IDE and SCSI systems
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Consider system-specific factors like firmware and cable quality alongside conversion results
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Use results primarily for relative performance comparison rather than exact throughput predictions
Limitations
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Conversion reflects relative transfer capabilities, not exact performance
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Actual data rates may vary due to system architecture and hardware specifics
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Differences in signalling and command protocols prevent direct equivalency
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Primarily useful for legacy system maintenance and integration scenarios
Frequently Asked Questions
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What does IDE (DMA mode 2) mean?
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IDE (DMA mode 2) is a data transfer mode for Parallel ATA devices allowing direct memory access with low CPU overhead, part of legacy PATA/IDE interfaces.
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What is SCSI (Ultra-2)?
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SCSI (Ultra-2) is a parallel Small Computer System Interface standard using Low Voltage Differential signaling to provide higher performance and longer cable lengths compared to earlier SCSI types.
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Why convert between IDE (DMA mode 2) and SCSI (Ultra-2)?
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This conversion helps compare data transfer rates for legacy PATA/IDE and higher-performance SCSI interfaces when diagnosing, tuning, or migrating storage systems.
Key Terminology
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IDE (DMA mode 2)
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A Parallel ATA data transfer mode allowing devices to move data directly to/from memory with low CPU overhead, used in legacy PATA/IDE systems.
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SCSI (Ultra-2)
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A parallel SCSI interface standard using Low Voltage Differential signaling for higher performance and longer cables, applied in enterprise block storage.
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Data Transfer Rate
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The speed at which data is moved from one device or system to another, measured in units relevant to the interface technology.