What Is This Tool?
This unit converter enables the translation of data transfer rates from IDE (PIO mode 2), a legacy CPU-driven transfer mode, to SCSI (Sync), a synchronous mode in the SCSI protocol offering higher throughput and consistent timing.
How to Use This Tool?
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Enter the value in IDE (PIO mode 2) units that you wish to convert.
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Select IDE (PIO mode 2) as the original unit and SCSI (Sync) as the target unit.
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Perform the conversion to get the corresponding SCSI (Sync) value.
Key Features
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Converts IDE (PIO mode 2) data transfer rates to SCSI (Sync) equivalents using a defined conversion rate.
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Supports analysis of legacy storage device performance and migration planning.
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Provides examples to illustrate conversion calculations.
Examples
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Converting 2 IDE (PIO mode 2) results in 3.32 SCSI (Sync)
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Converting 0.5 IDE (PIO mode 2) equals 0.83 SCSI (Sync)
Common Use Cases
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Assessing and configuring legacy BIOS or firmware settings for older IDE drives.
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Analyzing legacy PC performance where OS reverts from DMA to PIO mode.
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Comparing transfer speeds between older IDE devices and synchronous SCSI modes in storage arrays.
Tips & Best Practices
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Use this conversion primarily for legacy system diagnostics and restoration projects.
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Validate conversion results against actual device reports when possible due to protocol and hardware differences.
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Remember that IDE PIO mode is outdated compared to modern DMA and synchronous transfer methods.
Limitations
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Conversion is approximate since IDE and SCSI operate with different timing and protocols.
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Real throughput can differ because of hardware specifics, overhead, and negotiated parameters.
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The IDE PIO mode is mostly obsolete and significantly slower than current transfer technologies.
Frequently Asked Questions
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What does IDE (PIO mode 2) mean?
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IDE (PIO mode 2) refers to a legacy CPU-driven data transfer timing specification for IDE devices using programmed input/output cycles.
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Why convert IDE (PIO mode 2) to SCSI (Sync)?
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To compare data transfer performances between legacy IDE storage modes and more deterministic synchronous SCSI protocols for diagnostics and migration.
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Is this conversion exact?
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No, the conversion is approximate due to different timing mechanisms and protocol overhead between IDE and SCSI transfers.
Key Terminology
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IDE (PIO mode 2)
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A legacy ATA/IDE interface timing standard for CPU-driven data transfers using programmed I/O cycles on older IDE drives.
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SCSI (Sync)
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The synchronous transfer mode in the SCSI protocol where data is transferred in sync with a negotiated clock to provide higher throughput.
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Conversion Rate
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A value indicating how much one unit equals in another; here, 1 IDE (PIO mode 2) equals 1.66 SCSI (Sync).