What Is This Tool?
This tool allows users to convert data transfer rates from IDE (UDMA mode 2), a legacy PATA transfer mode, to SCSI (Ultra-2), a parallel SCSI standard. It helps in comparing and translating performance characteristics of older computer interfaces.
How to Use This Tool?
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Enter the value in IDE (UDMA mode 2) units you want to convert
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Select the target unit as SCSI (Ultra-2)
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Click the convert button to obtain the equivalent data transfer rate
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Review the result alongside practical examples for context
Key Features
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Converts data transfer values from IDE (UDMA mode 2) to SCSI (Ultra-2) units
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Based on theoretical maximum transfer rates of each interface
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Supports comparison for legacy hardware and data center storage configurations
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Simple browser-based interface for quick conversions
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Includes practical examples for better understanding
Examples
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1 IDE (UDMA mode 2) equals 0.4125 SCSI (Ultra-2)
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10 IDE (UDMA mode 2) equals 4.125 SCSI (Ultra-2)
Common Use Cases
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Configuring legacy PC BIOS or drive-controller settings for ATA/33 performance
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Comparing throughput of PATA/IDE devices and parallel SCSI systems
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Troubleshooting hardware compatibility and driver issues on older systems
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Managing enterprise storage arrays and RAID controllers in data centers
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Interfacing backup devices and removable media libraries using SCSI Ultra-2
Tips & Best Practices
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Use this tool to help benchmark and compare legacy hardware performance
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Confirm compatibility of devices before relying on conversion results
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Understand that actual transfer speeds may vary due to operational factors
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Apply conversions for system integration and troubleshooting tasks
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Refer to device specifications alongside conversion values for accuracy
Limitations
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Conversion is based on theoretical maximum transfer rates only
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Does not reflect real-world impact of cable quality or protocol overhead
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Actual speeds may be affected by device-specific or system bottlenecks
Frequently Asked Questions
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What does IDE (UDMA mode 2) refer to?
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IDE (UDMA mode 2) is a Parallel ATA interface mode, commonly called ATA/33, that provides a maximum theoretical transfer rate of about 33.3 megabytes per second for synchronous host-drive data transfers.
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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 enable higher data-transfer performance and longer cable lengths than earlier SCSI types.
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Why convert between IDE (UDMA mode 2) and SCSI (Ultra-2)?
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Users convert to compare or translate data transfer capabilities between legacy PATA/IDE systems and parallel SCSI environments to assist in performance benchmarking, system integration, and troubleshooting.
Key Terminology
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IDE (UDMA mode 2)
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An Ultra DMA transfer mode for Parallel ATA interfaces providing approximately 33.3 MB/s theoretical transfer rate for legacy PATA devices.
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SCSI (Ultra-2)
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A parallel SCSI standard using Low Voltage Differential signaling for enhanced data transfer and longer cabling compared to single-ended SCSI.
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Data transfer rate
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The speed at which data is transmitted between devices, often measured in megabytes per second.