What Is This Tool?
This converter allows users to change data transfer rates from IDE (UDMA mode 2), a parallel ATA transfer mode, to SCSI (Sync), the synchronous transfer mode of the SCSI protocol. It aids in comparing performance between two different legacy storage interfaces.
How to Use This Tool?
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Enter the data transfer value in IDE (UDMA mode 2) units.
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Select the conversion to SCSI (Sync) mode.
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View the converted rate based on the conversion formula.
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Use the result to compare or analyze legacy device performance.
Key Features
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Converts data transfer units from IDE (UDMA mode 2) to SCSI (Sync).
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Supports legacy storage protocols and hardware performance analysis.
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Browser-based and easy to use for various technical and troubleshooting tasks.
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Uses a fixed conversion rate for consistency.
Examples
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1 IDE (UDMA mode 2) equals 6.6 SCSI (Sync).
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3 IDE (UDMA mode 2) converts to 19.8 SCSI (Sync).
Common Use Cases
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Configuring legacy PC BIOS or drive-controller settings for ATA/33 devices.
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Comparing legacy disk throughput between PATA and SCSI hardware.
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Troubleshooting compatibility or performance issues in mixed storage setups.
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Tuning RAID controllers or managing server storage arrays with diverse protocols.
Tips & Best Practices
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Always verify that device settings correspond to the correct transfer mode.
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Use the conversion to help interpret benchmark results across different hardware types.
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Consider protocol differences when analyzing throughput or latency data.
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Apply this tool mainly for legacy device performance comparisons and configuration.
Limitations
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Conversion is approximate since IDE (UDMA mode 2) and SCSI (Sync) use distinct signaling methods.
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Actual throughput varies by hardware implementation and protocol overhead.
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SCSI transfer rates depend on negotiated clock and offset parameters not reflected in a fixed conversion rate.
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Not suitable for detailed real-time performance modeling.
Frequently Asked Questions
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What does IDE (UDMA mode 2) represent?
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IDE (UDMA mode 2) is a Parallel ATA Ultra DMA transfer mode known as ATA/33, offering a maximum theoretical transfer rate of about 33.3 megabytes per second.
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What is SCSI (Sync) mode?
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SCSI (Sync) refers to the synchronous transfer mode in the SCSI protocol where data is transferred with a negotiated clock for reliable and high-throughput performance.
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Why convert between these two units?
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Conversion helps compare and correlate data rates between legacy PATA/IDE and SCSI systems, especially in mixed hardware environments for performance or compatibility assessments.
Key Terminology
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IDE (UDMA mode 2)
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An Ultra DMA mode for Parallel ATA providing about 33.3 MB/s transfer rate, also known as ATA/33.
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SCSI (Sync)
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Synchronous transfer mode in the SCSI protocol with data transferred based on a shared clock for consistent performance.
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Conversion Rate
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The factor (6.6) used to convert a value from IDE (UDMA mode 2) units to SCSI (Sync) units in this tool.