What does SCSI (Ultra-3) refer to?

It is a generation of the Small Computer System Interface standard specifying a parallel SCSI interface revision used for block-level data transfers in storage subsystems.

What is IDE (UDMA mode 2)?

IDE (UDMA mode 2), also called ATA/33, is an Ultra DMA transfer mode for Parallel ATA interfaces with a theoretical transfer rate of about 33.3 MB/s.

Why convert between SCSI (Ultra-3) and IDE (UDMA mode 2)?

Converting helps compare and understand data transfer rates between different legacy storage interfaces, useful for troubleshooting and performance analysis.

How to Convert from SCSI (Ultra-3) to IDE (UDMA mode 2)?

Easily convert data transfer rates between SCSI (Ultra-3) and IDE (UDMA mode 2) standards used in legacy storage and PC hardware systems.

SCSI (Ultra-3)

IDE (UDMA mode 2)

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

SCSI (Ultra-3) to IDE (UDMA mode 2) Conversion Table

SCSI (Ultra-3)	IDE (UDMA mode 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.

SCSI (Ultra-3) to IDE (UDMA mode 2) Conversion Table
SCSI (Ultra-3)	IDE (UDMA mode 2)

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What Is This Tool?

This tool converts data transfer values from SCSI (Ultra-3), a parallel SCSI storage interface standard, to IDE (UDMA mode 2), an Ultra DMA transfer mode for Parallel ATA. It helps compare data transfer rates between these two distinct storage interface technologies.

How to Use This Tool?

Enter the data transfer amount in SCSI (Ultra-3) units
Select SCSI (Ultra-3) as the source unit
Choose IDE (UDMA mode 2) as the target unit
Click convert to see the equivalent value in IDE (UDMA mode 2)
Use the result to compare or analyze storage interface performance

Key Features

Converts data transfer units from SCSI (Ultra-3) to IDE (UDMA mode 2)
Provides conversion based on maximum theoretical transfer rates
Supports legacy storage interface comparison and benchmarking
Includes clear formula and example calculations
Browser-based and easy to use without installation

Examples

2 SCSI (Ultra-3) equals approximately 9.7 IDE (UDMA mode 2)
0.5 SCSI (Ultra-3) converts to about 2.42 IDE (UDMA mode 2)

Common Use Cases

Comparing throughput between enterprise SCSI storage and PC ATA drives
Diagnosing compatibility issues in legacy servers and storage arrays
Configuring PATA controller settings for older drives
Benchmarking parallel SCSI interface against older Parallel ATA modes
Troubleshooting device driver or firmware negotiations on PATA systems

Tips & Best Practices

Use this tool to estimate data transfer equivalency for legacy hardware
Apply conversions mainly for performance comparison, not exact throughput
Consider device condition and system factors that affect actual speeds
Verify interface compatibility beyond just data rate numbers
Refer to manufacturer documentation for specific device capabilities

Limitations

Conversion is theoretical and based on maximum transfer rates only
Actual throughput may differ due to overhead, hardware condition, or system setup
SCSI (Ultra-3) and IDE (UDMA mode 2) use distinct signaling and protocols
Conversion should be considered approximate for performance comparisons
Not intended for precise engineering or real-time data transfer measurements

Frequently Asked Questions

What does SCSI (Ultra-3) refer to?: It is a generation of the Small Computer System Interface standard specifying a parallel SCSI interface revision used for block-level data transfers in storage subsystems.
What is IDE (UDMA mode 2)?: IDE (UDMA mode 2), also called ATA/33, is an Ultra DMA transfer mode for Parallel ATA interfaces with a theoretical transfer rate of about 33.3 MB/s.
Why convert between SCSI (Ultra-3) and IDE (UDMA mode 2)?: Converting helps compare and understand data transfer rates between different legacy storage interfaces, useful for troubleshooting and performance analysis.

Key Terminology

SCSI (Ultra-3): A parallel storage interface standard generation that defines signaling and command framing for host to storage device block-level data transfers.
IDE (UDMA mode 2): An Ultra DMA transfer mode of Parallel ATA that enables approximately 33.3 MB/s data transfers using a particular signaling and timing profile.
Data transfer rate: The speed at which data is moved from one device or interface to another, commonly measured in megabytes per second.

Quick Knowledge Check

What type of interface is SCSI (Ultra-3)?

A USB storage standard

A parallel SCSI storage interface

A wireless data transfer protocol

What maximum transfer rate does IDE (UDMA mode 2) provide?

About 33.3 megabytes per second

About 100 megabytes per second

Less than 1 megabyte per second

Why is the conversion between these units approximate?

Because they use different signaling and protocols

Because the units are exactly the same

They are only used for wireless networks

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