What Is This Tool?
This converter allows users to translate data transfer rates from IDE (UDMA mode 3), a legacy Parallel ATA transfer mode, into equivalent values in SCSI (Fast Ultra), which is a parallel SCSI signalling mode combining Fast and Ultra standards to enhance throughput and reduce latency.
How to Use This Tool?
-
Enter the data transfer value in IDE (UDMA mode 3) units
-
Select IDE (UDMA mode 3) as the source unit and SCSI (Fast Ultra) as the target unit
-
Click the convert button to see the result in SCSI (Fast Ultra)
-
Use the conversion to assess or compare performance for legacy and SCSI-based storage devices
Key Features
-
Transfers data rates from IDE (UDMA mode 3) to SCSI (Fast Ultra)
-
Uses a fixed conversion factor based on theoretical maximum transfer speeds
-
Supports comparing legacy PATA/IDE interface rates with SCSI throughput
-
Browser-based and easy to use with clear input and output units
Examples
-
Converting 2 IDE (UDMA mode 3) units results in 5 SCSI (Fast Ultra) units
-
Converting 0.4 IDE (UDMA mode 3) units yields 1 SCSI (Fast Ultra) unit
Common Use Cases
-
Comparing throughput of legacy PATA/IDE hard drives with SCSI devices
-
Configuring BIOS or drive firmware on older systems for compatibility
-
Benchmarking and troubleshooting storage interfaces in mixed environments
-
Setting up RAID arrays and connecting tape libraries in server environments
Tips & Best Practices
-
Use this conversion to understand relative maximum speeds, not actual sustained throughput
-
Verify unit selections carefully to ensure accurate calculations
-
Consider hardware condition and firmware differences when interpreting results
-
Apply the tool for legacy system maintenance and mixed interface performance comparisons
Limitations
-
Conversion is based on theoretical maximum transfer rates, not real-world sustained speeds
-
Actual performance may vary due to overhead, hardware state, or firmware
-
IDE (UDMA mode 3) represents legacy technology that may not align with modern standards
Frequently Asked Questions
-
What does IDE (UDMA mode 3) represent?
-
IDE (UDMA mode 3) is a transfer mode for Parallel ATA interfaces providing a maximum raw transfer rate of about 44.4 MB/s and enables minimal CPU involvement through DMA.
-
Why convert IDE (UDMA mode 3) to SCSI (Fast Ultra)?
-
The conversion helps compare data transfer capabilities between legacy PATA/IDE devices and SCSI peripherals, aiding in system upgrades, compatibility checks, and performance benchmarking.
-
Is the conversion rate exact for actual system performance?
-
No, the conversion reflects theoretical maximum throughput and does not guarantee real sustained speeds, which depend on various factors including hardware and firmware.
Key Terminology
-
IDE (UDMA mode 3)
-
An Ultra DMA transfer mode for Parallel ATA interfaces with a maximum raw transfer speed of about 44.4 MB/s, used in legacy PATA/IDE drives.
-
SCSI (Fast Ultra)
-
A parallel SCSI signalling mode combining Fast and Ultra SCSI standards to increase throughput and reduce latency while remaining compatible with SCSI command sets.
-
Conversion Rate
-
The factor used to translate values from IDE (UDMA mode 3) units to SCSI (Fast Ultra) units, which is 2.5 in this converter.