Large File Upload Speed Test
Evaluate blob storage upload performance across Azure's global infrastructure by testing file transfer speeds to different regions.
- Select your target Azure region from the dropdown
- Choose a test file and configure block size/concurrency settings as needed
- Click "Start Test" to begin the evaluation
Note: Test results may vary between runs due to network congestion, routing changes, local connectivity quality, and system resource usage.
Test Configuration
Frequently Asked Questions
The performance test tool:
- Uploads your test file to temporary Azure Blob storage in your selected region
- Measures actual transfer speeds accounting for network conditions
- Calculates and displays detailed performance metrics
- Automatically removes the test file after completion
Results can vary based on network conditions, file size, and selected parameters.
Block Size: Larger blocks (4MB+) typically work better for files over 100MB but require more memory.
Concurrency: Higher values can improve speed but may be limited by:
- Available bandwidth
- System resources
- Azure Storage account limits
Start with default values and adjust based on your results.
Performance variations are normal and can be attributed to multiple factors:
- Network path changes and internet traffic conditions
- Regional network congestion
- Local network quality and bandwidth availability
- Distance to the selected Azure region
- System resource availability
For the most accurate assessment, we recommend running multiple tests at different times and comparing the results.