Sync Time Calculator
Estimate sync time for initial load and ongoing data changes
Input Parameters
Results
Calculating...
How it works
Understand how long it will take to achieve synchronization between source and target when data is continuously changing during the migration process. Accounts for the impact of ongoing changes (CDC - Change Data Capture) during the initial data transfer.
Formula
Total Transfer Time = Initial Data Size ÷ (Throughput - Change Rate)
Usage
- Initial Data Size: Enter the volume of data at the start of migration
- Observed Throughput: Enter the actual transfer speed (not theoretical bandwidth)
- Change Rate: Enter how data is being modified on the source
When to use this calculator
- Planning migrations where data changes during the transfer (CDC scenarios)
- Estimating synchronization time for live database migrations
- Determining if throughput is sufficient to overcome change rate
- Understanding the impact of ongoing changes on migration duration
- Planning cutover windows and downtime requirements
Important Note
If the change rate exceeds throughput, synchronization will never be achieved. In such cases, either increase the throughput or implement a migration strategy that can handle this scenario, such as application downtime.