What Is This Tool?
This converter allows users to translate data transfer rates from the SCSI (Fast Wide) standard to the IDE (UDMA-66) mode. It assists in comparing and configuring legacy storage interfaces by providing a straightforward conversion based on their theoretical throughput capabilities.
How to Use This Tool?
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Enter the data transfer value in SCSI (Fast Wide) units
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Select the source unit as SCSI (Fast Wide)
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Choose IDE (UDMA-66) as the target unit
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Click convert to obtain the equivalent IDE (UDMA-66) value
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Use the result to inform storage device and controller configuration
Key Features
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Converts data transfer values specifically between SCSI (Fast Wide) and IDE (UDMA-66)
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Browser-based and easy to use for legacy storage system comparison
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Supports clear understanding of maximum theoretical transfer rates
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Helps configure legacy hardware through unit conversion
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Includes practical examples to illustrate conversions
Examples
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1 SCSI (Fast Wide) equals approximately 0.303 IDE (UDMA-66)
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10 SCSI (Fast Wide) converts to 3.03 IDE (UDMA-66)
Common Use Cases
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Configuring legacy servers and workstations with different storage interfaces
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Comparing throughput capabilities of disk drives, tape drives, and optical devices
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Managing archival and backup systems with legacy hardware
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Diagnosing and optimizing performance on older PATA and SCSI devices
Tips & Best Practices
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Verify cable quality and connection types to approach theoretical transfer rates
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Use conversion results to assist BIOS or system configuration for legacy devices
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Consider device negotiation and physical limitations when interpreting converted values
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Apply conversions primarily for older storage technology assessments
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Cross-reference conversion results with actual hardware performance tests
Limitations
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Conversion reflects theoretical maximum rates, not actual throughput
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Performance depends on factors such as cable quality and device negotiation
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Relevant only to legacy technologies less common in current systems
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Does not account for physical interface or controller limitations
Frequently Asked Questions
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What does SCSI (Fast Wide) represent?
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SCSI (Fast Wide) is a SCSI-2 interface combining 10 MHz Fast timing with a 16-bit wide bus, allowing a maximum theoretical throughput of 20 MB/s for single-ended implementations.
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What is IDE (UDMA-66)?
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IDE (UDMA-66), also known as Ultra DMA Mode 4 or ATA-66, is a Parallel ATA transfer mode with a theoretical maximum raw data rate of 66.7 MB/s, requiring an 80-conductor cable.
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Why would I need to convert between these units?
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Users convert to compare or configure legacy storage devices and controllers with differing interface speeds, ensuring compatibility and optimum performance.
Key Terminology
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SCSI (Fast Wide)
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A SCSI-2 interface mode with Fast timing at 10 MHz and a 16-bit wide data bus, enabling up to 20 MB/s theoretical throughput.
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IDE (UDMA-66)
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A Parallel ATA transfer mode known as Ultra DMA Mode 4 or ATA-66, with a maximum theoretical data rate of 66.7 MB/s, utilizing an 80-conductor cable.
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Data Transfer Rate
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The amount of data transferred from one device to another over a given interface in a second.