A consultant is working on a data migration to NPSP that includes tens of millions...

For a data migration involving tens of millions of records to NPSP over a weekend, the Bulk API is recommended due to its ability to handle large volumes of data efficiently:

Prepare Data for Migration:

Ensure all data is cleaned and formatted correctly for import into Salesforce.

Segment the data into manageable batches to optimize the migration process.

Use Bulk API for Migration:

The Bulk API is designed for loading large data sets and operates asynchronously, allowing for high performance.

Create a Bulk API job to import the data.

Upload data batches and monitor the job status to ensure successful data import.

Minimize System Downtime:

Schedule the data migration to occur during a weekend to reduce the impact on users and minimize system downtime.

Inform stakeholders about the migration schedule and expected downtime.

Verify Data Integrity:

After the migration, run data integrity checks to ensure that all records have been accurately imported.

Compare source data with the imported data in Salesforce to verify completeness.

Using the Bulk API will ensure that the large volume of data is migrated efficiently within the limited timeframe, minimizing disruption to the organization’s operations.