What Is This Tool?
This converter transforms data sizes measured in E.P.T.A. 1 (payload), a protocol-specific unit representing user data payload in E.P.T.A. 1 frames, into SCSI (Async) units that denote asynchronous data transfer mode of the SCSI protocol. It helps users compare data throughput and performance between different communication protocols.
How to Use This Tool?
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Enter the value in E.P.T.A. 1 (payload) units you want to convert
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Select E.P.T.A. 1 (payload) as the input unit and SCSI (Async) as the output unit
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Click the convert button to get the equivalent value in SCSI (Async) units
Key Features
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Converts payload data units from E.P.T.A. 1 frames to asynchronous SCSI transfer units
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Supports benchmarking and diagnostic measurements for legacy and embedded systems
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Browser-based tool requiring no installation
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Facilitates comparison between different protocols' data transfer behaviors
Examples
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5 E.P.T.A. 1 (payload) converts to 0.8 SCSI (Async)
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10 E.P.T.A. 1 (payload) converts to 1.6 SCSI (Async)
Common Use Cases
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Calculating throughput and bandwidth for links carrying E.P.T.A. 1 traffic
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Benchmarking performance of legacy SCSI devices operating asynchronously
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Configuring and testing embedded or retrocomputing systems using asynchronous SCSI
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Logging and telemetry for systems reporting in E.P.T.A. 1 payload units
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Troubleshooting SCSI bus timing and handshake issues
Tips & Best Practices
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Understand that the converter translates nominal payload equivalences, not instantaneous transfer rates
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Use this tool mainly within the context of protocol-specific data transfer analysis
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Combine conversion results with device performance knowledge when benchmarking
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Account for asynchronous SCSI handshake and bus arbitration delays not fully captured by conversion
Limitations
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Does not include protocol overhead or header sizes in payload measurements
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Conversion may not reflect latency or timing variations inherent in asynchronous transfers
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Primarily intended for specialized use in protocol and device performance comparisons
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Not suitable for general-purpose data transfer measurement without protocol context
Frequently Asked Questions
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What does E.P.T.A. 1 (payload) measure?
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It measures the size of user or application data carried within a single E.P.T.A. 1 frame, excluding protocol overhead or headers.
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What is SCSI (Async)?
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SCSI (Async) refers to the asynchronous data-transfer mode of the SCSI protocol where data exchanges use request/acknowledge handshakes without a shared clock.
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Why convert between E.P.T.A. 1 (payload) and SCSI (Async)?
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Converting helps compare throughput, performance, and data rates between different protocols with differing transfer mechanisms and overhead.
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Can I use this converter for general data transfer measurements?
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No, this conversion is specialized and depends on protocol-specific context; it is not intended for general-purpose measurements.
Key Terminology
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E.P.T.A. 1 (payload)
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A unit representing the size of user/application data in an E.P.T.A. 1 frame, excluding overhead.
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SCSI (Async)
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An asynchronous data transfer mode in the SCSI protocol using request/acknowledge handshakes rather than a shared clock.
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Protocol Overhead
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Additional data such as headers and control information not counted in payload data measurements.
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Throughput
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The amount of data transferred successfully over a communication link in a given time.