What Is This Tool?
This converter allows you to translate data transfer rates from IDE (UDMA mode 1), a legacy PATA transfer mode, to SCSI (Fast Ultra Wide), a parallel SCSI interface mode. It helps compare theoretical maximum speeds between these older storage technologies.
How to Use This Tool?
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Enter the value in IDE (UDMA mode 1) units you want to convert.
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Select IDE (UDMA mode 1) as the source unit and SCSI (Fast Ultra Wide) as the target unit.
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Click convert to get the equivalent data transfer rate in SCSI (Fast Ultra Wide).
Key Features
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Converts data transfer units from IDE (UDMA mode 1) to SCSI (Fast Ultra Wide).
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Based on established theoretical maximum transfer rates defined by ATA/ATAPI and SCSI standards.
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Supports legacy computing scenarios involving PATA and parallel SCSI devices.
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Provides quick calculations using the fixed conversion rate of 1 IDE (UDMA mode 1) = 0.625 SCSI (Fast Ultra Wide).
Examples
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2 IDE (UDMA mode 1) equals 1.25 SCSI (Fast Ultra Wide).
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4 IDE (UDMA mode 1) equals 2.5 SCSI (Fast Ultra Wide).
Common Use Cases
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Benchmarking or comparing maximum throughput between PATA and SCSI storage interfaces in vintage PCs and legacy servers.
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Diagnosing BIOS or drive transfer modes on older hardware using UDMA or SCSI technology.
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Planning system upgrades or verifying hardware compatibility involving parallel SCSI and PATA devices.
Tips & Best Practices
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Use this conversion to understand theoretical transfer limits rather than actual device performance.
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Ensure your hardware settings match the intended UDMA mode or SCSI standard for accurate benchmarking.
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Apply this tool primarily in legacy system maintenance or analysis scenarios.
Limitations
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Conversion is based on theoretical maximum transfer rates and does not consider real-world factors like cable quality or controller overhead.
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These transfer modes are outdated and mostly relevant for legacy computing environments.
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Actual transfer speeds may vary due to device condition and interface bottlenecks.
Frequently Asked Questions
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What is IDE (UDMA mode 1)?
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IDE (UDMA mode 1) is an Ultra DMA transfer mode for older Parallel ATA devices providing a theoretical maximum raw transfer rate of about 25 MB/s.
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What does SCSI (Fast Ultra Wide) refer to?
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SCSI (Fast Ultra Wide) is a parallel SCSI mode that uses a wider data bus and faster signalling to enable higher sustained throughput than earlier narrow SCSI versions.
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Why convert between IDE (UDMA mode 1) and SCSI (Fast Ultra Wide)?
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Converting helps compare maximum data transfer rates between these legacy interfaces for performance benchmarking, hardware diagnostics, and system upgrade planning.
Key Terminology
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IDE (UDMA mode 1)
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An Ultra DMA transfer mode of Parallel ATA providing about 25 MB/s theoretical maximum throughput, mainly used in older PATA devices.
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SCSI (Fast Ultra Wide)
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A legacy parallel SCSI mode with a wider data bus and faster signalling, enabling higher sustained data transfer rates.
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Data Transfer Rate
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The speed at which data is transmitted between devices, commonly measured in megabytes per second (MB/s).