What does IDE (PIO mode 4) represent?

IDE (PIO mode 4) is a timing and handshaking mode for ATA/IDE storage devices controlled directly by the CPU, primarily used in older systems.

How is SCSI (Ultra-2) different from IDE (PIO mode 4)?

SCSI (Ultra-2) is a parallel interface standard using Low Voltage Differential signaling to enable higher transfer speeds and longer cable lengths compared to the CPU-driven IDE (PIO mode 4).

Can I use this tool to convert actual file sizes or storage capacities?

No. This conversion applies only to data transfer rates or relative throughput, not to physical storage amounts.

Convert IDE (PIO mode 4) to SCSI (Ultra-2) Data Transfer Units

Easily convert data transfer values from IDE (PIO mode 4) timing mode to SCSI (Ultra-2) standard. Compare and translate performance metrics between legacy ATA CPU-driven transfers and advanced SCSI protocols.

IDE (PIO mode 4)

SCSI (Ultra-2)

Please check your input. It must be a valid numeric value.

IDE (PIO mode 4) to SCSI (Ultra-2) Conversion Table

IDE (PIO mode 4)	SCSI (Ultra-2)

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

IDE (PIO mode 4) to SCSI (Ultra-2) Conversion Table
IDE (PIO mode 4)	SCSI (Ultra-2)

Explore More Data Transfer Units Converter

What Is This Tool?

This online converter allows you to translate data transfer values from IDE (PIO mode 4), an older CPU-controlled ATA timing mode, to SCSI (Ultra-2), a higher-performance parallel SCSI interface standard. It facilitates comparison and benchmarking between legacy and modern storage data transfer rates.

How to Use This Tool?

Enter the data transfer value in IDE (PIO mode 4) units
Select IDE (PIO mode 4) as the source unit
Choose SCSI (Ultra-2) as the target unit
Click convert to obtain the equivalent data transfer value in SCSI (Ultra-2)
Use the results to compare or analyze storage performance across technologies

Key Features

Converts units from IDE (PIO mode 4) to SCSI (Ultra-2) using a fixed conversion rate
Supports data transfer rate comparisons for legacy and modern storage technologies
User-friendly, browser-based tool ideal for quick calculations
Provides examples demonstrating conversion calculations
Helps in understanding performance differences between storage interfaces

Examples

1 IDE (PIO mode 4) equals 0.2075 SCSI (Ultra-2)
5 IDE (PIO mode 4) equals 1.0375 SCSI (Ultra-2) calculated as 5 × 0.2075

Common Use Cases

Benchmarking legacy IDE/ATA storage devices against SCSI systems
Configuring or diagnosing older PCs and embedded systems with IDE timing modes
Integrating legacy storage with modern enterprise SCSI infrastructure
Comparing performance in RAID and data center storage environments
Supporting industrial and retro-computing compatibility assessments

Tips & Best Practices

Use this converter for relative performance comparison rather than exact storage capacity conversion
Consider system overhead and hardware specifics when interpreting results
Use consistent units for fair benchmarking between different storage protocols
Validate conversion results in your specific environment for accuracy
Combine conversion outcomes with other diagnostic and performance tools for comprehensive analysis

Limitations

Conversion relates to relative data throughput, not actual physical data units
Differences in hardware and protocol implementation can affect performance beyond conversion results
Conversion does not guarantee equivalent real-world speeds or compatibility
IDE (PIO mode 4) is a timing protocol mode, not a physical storage unit
SCSI (Ultra-2) offers improved signaling and longer cable support, creating intrinsic performance variances

Frequently Asked Questions

What does IDE (PIO mode 4) represent?: IDE (PIO mode 4) is a timing and handshaking mode for ATA/IDE storage devices controlled directly by the CPU, primarily used in older systems.
How is SCSI (Ultra-2) different from IDE (PIO mode 4)?: SCSI (Ultra-2) is a parallel interface standard using Low Voltage Differential signaling to enable higher transfer speeds and longer cable lengths compared to the CPU-driven IDE (PIO mode 4).
Can I use this tool to convert actual file sizes or storage capacities?: No. This conversion applies only to data transfer rates or relative throughput, not to physical storage amounts.

Key Terminology

IDE (PIO mode 4): An ATA/IDE CPU-driven timing and handshaking mode for data transfer with a theoretical max throughput around 16.7 MB/s.
SCSI (Ultra-2): A parallel SCSI standard using Low Voltage Differential signaling to achieve higher transfer performance and longer cable distances.
Data Transfer: The measurement of the rate at which data is transmitted between devices or storage interfaces.

Quick Knowledge Check

What type of transfer mode is IDE (PIO mode 4)?

A physical storage size unit

A CPU-controlled timing mode for ATA devices

A signal voltage standard for SCSI

Which feature is true about SCSI (Ultra-2)?

Uses CPU to control data transfers

Employs Low Voltage Differential signaling for improved performance

Is an older ATA timing protocol

Why is this conversion important?

For measuring physical disk size

To compare legacy and modern data transfer rates

For calculating data storage duration

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