What Is This Tool?
This converter translates data transfer rates from STM-4 (signal), an optical telecom transmission standard, to IDE (UDMA mode 4), a legacy Parallel ATA storage interface mode. It helps compare high-speed telecom data streams with historical PC storage transfer rates.
How to Use This Tool?
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Enter the data value in STM-4 (signal) units
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Select STM-4 (signal) as the source unit
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Choose IDE (UDMA mode 4) as the target unit
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Click convert to view the equivalent data transfer rate
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Use the result to assess data throughput comparisons or for planning legacy system integration
Key Features
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Supports conversion between STM-4 (signal) and IDE (UDMA mode 4) data rates
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Based on standardized definitions of telecommunications and storage interfaces
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Browser-based tool enabling quick and easy data transfer rate comparisons
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Useful for telecom network and legacy hardware integration planning
Examples
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1 STM-4 (signal) equals approximately 1.178 IDE (UDMA mode 4)
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5 STM-4 (signal) corresponds to about 5.89 IDE (UDMA mode 4)
Common Use Cases
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Comparing optical backbone data transmission speeds to legacy IDE storage interfaces
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Planning migration or integration between telecom SDH infrastructure and older PC storage systems
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Benchmarking and maintaining legacy storage devices using IDE (UDMA mode 4)
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Translating telecom-grade transfer rates into familiar personal computer data speeds for understanding or reporting
Tips & Best Practices
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Use this converter as an estimation tool rather than an exact equivalence
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Consider overhead and hardware limitations when interpreting converted data rates
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Apply conversions mainly for conceptual understanding or legacy system comparisons
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Cross-check with actual device specifications before making system decisions
Limitations
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Does not include overhead or signaling inefficiencies in throughput values
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STM-4 (signal) and IDE (UDMA mode 4) represent fundamentally different technologies
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Direct conversions serve mainly illustrative purposes, not precise technical equivalency
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Hardware constraints and compatibility are not addressed by this tool
Frequently Asked Questions
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What does STM-4 (signal) represent?
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STM-4 (signal) is a high-speed optical transmission frame in the Synchronous Digital Hierarchy used to transport digital traffic at a nominal rate of 622.08 Mbit/s.
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What is IDE (UDMA mode 4)?
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IDE (UDMA mode 4), also known as Ultra DMA/66, is a Parallel ATA transfer mode supporting data transfer rates up to about 66.7 megabytes per second using an 80-conductor cable.
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Why convert STM-4 (signal) to IDE (UDMA mode 4)?
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Converting these units helps compare telecom-grade optical data rates to familiar legacy PC storage speeds, aiding in infrastructure planning and legacy system benchmarking.
Key Terminology
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STM-4 (signal)
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A standardized optical transmission frame in the Synchronous Digital Hierarchy operating at 622.08 Mbit/s for multiplexing digital traffic and management signals.
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IDE (UDMA mode 4)
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A Parallel ATA transfer mode using Ultra DMA protocol with a theoretical maximum throughput of about 66.7 MB/s, requiring an 80-conductor cable.
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Synchronous Digital Hierarchy (SDH)
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A telecom standard for optical network transmission frames, including STM-4, used for high-speed data transport.