What Is This Tool?
This tool converts data transfer rates between SCSI (Async), which uses asynchronous transfer mode, and IDE (UDMA-66), a Parallel ATA transfer mode. It helps translate performance metrics of legacy storage devices for applications such as benchmarking, configuration, and troubleshooting.
How to Use This Tool?
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Enter the data transfer rate value in SCSI (Async) units.
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Select SCSI (Async) as the source unit and IDE (UDMA-66) as the target unit.
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Click convert to see the equivalent value in IDE (UDMA-66) units.
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Use the results for benchmarking or configuring legacy storage devices.
Key Features
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Converts from SCSI (Async), an asynchronous SCSI transfer mode.
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Converts to IDE (UDMA-66), a Parallel ATA transfer mode with burst rates up to 66.7 MB/s.
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Facilitates comparisons of legacy SCSI and IDE device transfer rates.
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Useful for benchmarking, troubleshooting, and configuration of older hardware.
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Browser-based and easy to use without additional software.
Examples
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10 SCSI (Async) equals approximately 0.227 IDE (UDMA-66).
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100 SCSI (Async) converts to about 2.273 IDE (UDMA-66).
Common Use Cases
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Benchmarking throughput of legacy storage devices in SCSI asynchronous mode.
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Configuring and testing embedded or retrocomputing systems with asynchronous SCSI.
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Verifying maximum transfer rates of older PATA (IDE) drives using IDE (UDMA-66).
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Diagnosing transfer errors and performance on legacy IDE systems.
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Comparing or translating legacy SCSI asynchronous rates to IDE burst capabilities.
Tips & Best Practices
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Confirm device and cable compatibility before interpreting conversion results.
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Use the conversion as a nominal guideline, allowing for device and protocol differences.
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Validate transfer rates with physical benchmarks for accurate performance assessment.
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Apply this tool primarily for retrocomputing, legacy hardware troubleshooting, and archival purposes.
Limitations
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Conversion reflects theoretical rates and may not represent actual sustained speeds.
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Asynchronous transfer nature and protocol overhead limit direct performance equivalence.
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Real-world results depend on device implementations, cable quality, and controller support.
Frequently Asked Questions
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What does SCSI (Async) indicate?
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It refers to the asynchronous data transfer mode of SCSI devices where data exchange relies on request/acknowledge handshakes without a shared clock.
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What is IDE (UDMA-66)?
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IDE (UDMA-66) is a Parallel ATA transfer mode that defines a maximum raw data rate of 66.7 MB/s and requires specific cabling and hardware support.
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Why convert from SCSI (Async) to IDE (UDMA-66)?
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To compare or translate data rates between legacy SCSI and PATA devices, useful for benchmarking, configuration, and troubleshooting.
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Can conversion results be used for precise speed measurements?
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No, due to protocol and hardware differences, the conversion provides nominal values that might not reflect sustained transfer speeds.
Key Terminology
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SCSI (Async)
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An asynchronous data transfer mode of the SCSI protocol using request/acknowledge handshakes instead of a shared clock.
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IDE (UDMA-66)
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A Parallel ATA transfer mode supporting up to 66.7 MB/s burst data rates requiring 80-conductor cables and compatible devices.
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Data Transfer Rate
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The speed at which data is moved from one device or medium to another, often measured in megabytes per second.