What Is This Tool?
This tool helps convert data transfer measurements from the SCSI (Fast Wide) mode to the SCSI (Async) mode, allowing users to assess and compare the performance of these two SCSI interface modes.
How to Use This Tool?
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Enter the value in SCSI (Fast Wide) units you want to convert
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Select SCSI (Fast Wide) as the source unit and SCSI (Async) as the target unit
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Click convert to get the equivalent value in SCSI (Async) units
Key Features
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Performs data transfer unit conversion between SCSI (Fast Wide) and SCSI (Async)
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User-friendly interface suitable for legacy hardware and troubleshooting scenarios
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Browser-based and easily accessible without the need for special software
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Provides quick comparisons between synchronous and asynchronous SCSI transfer modes
Examples
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1 SCSI (Fast Wide) equals 13.3333333333 SCSI (Async)
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2 SCSI (Fast Wide) equals 26.6666666666 SCSI (Async)
Common Use Cases
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Connecting disk drives and RAID controllers in legacy servers to analyze throughput
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Benchmarking legacy SCSI devices when running in asynchronous mode
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Troubleshooting SCSI bus timing, handshake, and compatibility issues
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Configuring or testing embedded and retrocomputing systems with asynchronous SCSI
Tips & Best Practices
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Understand that actual throughput can vary due to device and cable specifics
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Use this conversion to compare and diagnose performance differences between modes
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Leverage the tool for retrocomputing or legacy system maintenance and testing
Limitations
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Throughput results depend heavily on hardware factors such as cable length and negotiation
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Asynchronous mode performance is influenced by device response times, possibly limiting speed compared to Fast Wide mode
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Conversion rates represent theoretical values and may differ in real-world scenarios
Frequently Asked Questions
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What does SCSI (Fast Wide) mean?
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SCSI (Fast Wide) is a SCSI-2 interface mode combining Fast timing at 10 MHz and a 16-bit wide data bus, designed to increase sustained transfer rates up to 20 MB/s.
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What is the main difference between SCSI (Fast Wide) and SCSI (Async)?
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SCSI (Fast Wide) uses synchronous data transfer with a shared clock and wider bus, while SCSI (Async) uses asynchronous transfer with request/acknowledge handshakes, affecting throughput and device negotiation.
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Why would I convert between these two units?
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Conversion helps understand and compare transfer rates, troubleshoot legacy devices, and configure systems using different SCSI transfer modes.
Key Terminology
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SCSI (Fast Wide)
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A synchronous SCSI-2 interface mode combining 10 MHz timing with a 16-bit data bus to increase data transfer rates.
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SCSI (Async)
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An asynchronous SCSI mode where data transfer is controlled by request and acknowledge handshakes without a shared clock.
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Data Transfer Rate
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The speed at which data is transmitted from one device to another, often measured in megabytes per second.