What Is This Tool?
This converter transforms data transfer rates from IDE (UDMA mode 4) to SCSI (Fast), helping users compare legacy Parallel ATA speeds to parallel SCSI throughput commonly used in older computing environments.
How to Use This Tool?
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Enter the value in IDE (UDMA mode 4) units you want to convert
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Select IDE (UDMA mode 4) as the source unit and SCSI (Fast) as the target unit
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Click convert to see the equivalent data transfer rate in SCSI (Fast)
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Use the results to compare or understand legacy data transfer speeds
Key Features
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Converts data transfer units between IDE (UDMA mode 4) and SCSI (Fast)
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Supports legacy storage device standards for accurate comparison
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Simple interface for quick conversion based on defined throughput rates
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Browser-based tool accessible without installation
Examples
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1 IDE (UDMA mode 4) equals 6.6 SCSI (Fast) units
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5 IDE (UDMA mode 4) equals 33 SCSI (Fast) units
Common Use Cases
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Comparing data rates between legacy Parallel ATA and parallel SCSI devices
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Interfacing or migrating storage in older PC and server systems
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Benchmarking or maintaining legacy storage hardware
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Performing data recovery from older IDE devices
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Configuring or troubleshooting DMA modes in BIOS of vintage computers
Tips & Best Practices
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Ensure the IDE cable is an 80-conductor type for reliable performance
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Use conversion results for comparison since actual speeds may vary in use
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Understand both units reflect legacy standards, now mostly replaced
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Check hardware condition and system setup when benchmarking
Limitations
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Conversion is theoretical based on maximum throughput rates
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Actual performance may differ due to hardware, cable quality, and protocols
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Both units represent older standards now surpassed by modern serial technologies
Frequently Asked Questions
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What does IDE (UDMA mode 4) represent?
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IDE (UDMA mode 4) is a Parallel ATA transfer mode using Ultra DMA protocol with a maximum theoretical throughput of about 66.7 megabytes per second.
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How fast is SCSI (Fast)?
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SCSI (Fast) typically doubles the classic 8-bit SCSI throughput to about 10 megabytes per second using faster timing on a parallel SCSI bus.
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Why would I convert between these two units?
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Converting helps compare data transfer speeds of legacy PATA devices to parallel SCSI devices, useful for maintaining or migrating older storage systems.
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Is this conversion exact in real-world usage?
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No, the conversion is theoretical, and actual speeds vary due to hardware conditions, cables, system architecture, and data protocol overhead.
Key Terminology
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IDE (UDMA mode 4)
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A Parallel ATA transfer mode using Ultra DMA protocol, also called Ultra DMA/66 (ATA-4), enabling theoretical throughput near 66.7 MB/s.
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SCSI (Fast)
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A parallel SCSI bus enhancement increasing original SCSI speeds to about 10 MB/s, used in legacy systems before modern serial interfaces.
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80-conductor IDE cable
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A type of IDE cable designed to support Ultra DMA modes by providing reliable signaling through additional ground wires.