What Is This Tool?
This converter allows users to translate data transfer rates from IDE (UDMA mode 4) to SCSI (Async), facilitating performance comparison and benchmarking between these two legacy storage interface standards.
How to Use This Tool?
-
Enter the value you want to convert from IDE (UDMA mode 4).
-
Select IDE (UDMA mode 4) as the from unit and SCSI (Async) as the to unit.
-
Click convert to see the equivalent data transfer rate in SCSI (Async).
-
Use the results to compare throughput or perform benchmarking for legacy devices.
Key Features
-
Supports conversion between IDE (UDMA mode 4) and SCSI (Async) data transfer units.
-
Based on theoretical standardized throughput for accurate comparisons.
-
Useful for maintaining, troubleshooting, and benchmarking legacy storage hardware.
-
Browser-based and easy to use without installing software.
Examples
-
1 IDE (UDMA mode 4) = 44 SCSI (Async)
-
2 IDE (UDMA mode 4) = 88 SCSI (Async)
Common Use Cases
-
Comparing data transfer performance between IDE (UDMA mode 4) and SCSI (Async) devices.
-
Benchmarking legacy hard drives and tape drives operating in asynchronous SCSI mode.
-
Troubleshooting timing and compatibility problems in SCSI bus communications.
-
Supporting embedded or retrocomputing systems with asynchronous SCSI connections.
-
Configuring DMA settings in BIOS or firmware for older PC systems.
Tips & Best Practices
-
Ensure the hardware devices being compared support the selected transfer modes.
-
Use standardized throughput rates for benchmarking, but consider device-specific performance.
-
Recognize the impact of bus arbitration and handshaking on asynchronous SCSI throughput.
-
Use this tool as a reference in legacy storage maintenance and data recovery workflows.
Limitations
-
Conversion relies on theoretical throughput values which can vary with hardware and system configuration.
-
Real-world SCSI (Async) performance may be affected by device response times and bus arbitration delays.
-
This tool does not consider synchronous negotiation or other transfer modes outside IDE (UDMA mode 4) and SCSI (Async).
Frequently Asked Questions
-
What does IDE (UDMA mode 4) represent?
-
It is a Parallel ATA transfer mode that moves data between drive and host using Ultra DMA at about 66.7 MB/s, requiring an 80-conductor IDE cable.
-
What is SCSI (Async) mode?
-
SCSI (Async) is an asynchronous transfer method using request/acknowledge handshakes without a shared clock, affecting throughput by device response and bus arbitration.
-
Why convert between IDE (UDMA mode 4) and SCSI (Async)?
-
To compare and translate data transfer rates for benchmarking, troubleshooting, or maintaining legacy storage hardware using different interface standards.
Key Terminology
-
IDE (UDMA mode 4)
-
A Parallel ATA transfer mode using Ultra DMA protocol at about 66.7 MB/s, dependent on an 80-conductor IDE cable.
-
SCSI (Async)
-
An asynchronous SCSI data transfer mode exchanging data through request/acknowledge handshakes without a common clock.
-
Bus Arbitration
-
The process of managing access to the communication bus among multiple SCSI devices to prevent conflicts.