What Is This Tool?
This unit converter facilitates the translation of data transfer rates between STM-4 (signal), an optical transmission standard in telecommunications, and SCSI (Fast Wide), a legacy storage interface. It helps users compare and integrate different technologies by converting nominal throughput values.
How to Use This Tool?
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Enter the quantity of STM-4 (signal) units you want to convert.
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Select STM-4 (signal) as the source unit and SCSI (Fast Wide) as the target.
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Click the convert button to see the equivalent value in SCSI (Fast Wide).
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Review the output, which applies the conversion rate of 1 STM-4 (signal) = 3.888 SCSI (Fast Wide).
Key Features
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Converts between STM-4 (signal) and SCSI (Fast Wide) data transfer units.
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Uses a precise conversion factor based on nominal line rates and interface speeds.
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Supports performance comparison across telecom optical networks and storage subsystems.
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Browser-based and easy-to-use interface for quick conversions.
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Displays results using a standardized conversion formula.
Examples
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2 STM-4 (signal) equals 7.776 SCSI (Fast Wide).
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0.5 STM-4 (signal) equals 1.944 SCSI (Fast Wide).
Common Use Cases
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Translating high-capacity optical network data rates into legacy storage bandwidth measurements.
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Comparing telecom backbone throughput with storage subsystem capabilities.
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Planning compatibility and integration between SDH optical networks and SCSI storage solutions.
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Evaluating performance for data centers balancing network and storage infrastructure.
Tips & Best Practices
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Understand that STM-4 (signal) and SCSI (Fast Wide) use different units (Mbps vs MB/s) and overhead may affect payload rates.
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Use the conversion primarily for nominal throughput comparison, not direct protocol translation.
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Consider physical factors like cable length and device settings in actual SCSI transfer rates when interpreting results.
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Always verify compatibility between telecommunications equipment and storage devices beyond numeric conversion.
Limitations
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STM-4 (signal) measures line rate in Mbps, while SCSI (Fast Wide) throughput is in megabytes per second (MB/s), so conversions exclude overhead effects.
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Real-world SCSI throughput may vary due to hardware implementation, cable length, and device negotiation.
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The tool performs nominal throughput comparisons only; it does not translate data formats or communication protocols.
Frequently Asked Questions
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What does STM-4 (signal) represent?
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STM-4 (signal) is a standardized optical transmission frame in SDH with a nominal line rate of 622.08 Mbit/s, used for multiplexing and transporting digital traffic in telecom networks.
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What is SCSI (Fast Wide)?
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SCSI (Fast Wide) is a SCSI-2 interface mode combining Fast timing at 10 MHz with a 16-bit wide data bus, offering a theoretical maximum throughput of about 20 megabytes per second.
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Can this converter be used for data format or protocol translation?
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No, this converter only provides nominal throughput conversions and does not translate data formats or communication protocols.
Key Terminology
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STM-4 (signal)
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Synchronous Transport Module level-4 in SDH with a nominal line rate of 622.08 Mbit/s, used for multiplexing digital traffic including payload and management overhead.
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SCSI (Fast Wide)
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A SCSI-2 mode combining 10 MHz Fast timing with a 16-bit data bus, providing a theoretical maximum data transfer rate around 20 MB/s.
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Nominal Throughput
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The standardized data transfer rate, excluding overhead and other practical implementation factors.