AEM Bulk Import Tool Upper Limit

Hi ​@gagandeepsaluja 
Adobe's public documentation does not specify a fixed maximum total dataset size (for example, a TB limit per job). Bulk Import is intended for large-scale asset ingestion, and Adobe's asset-ingestion guidance identifies it for hundreds of GB to TB-scale imports. This should not be interpreted as unlimited or as a guarantee that any dataset will complete in one run.

For a multi-TB migration, I'd recommend running a dry run and a representative pilot first. Consider splitting the import into logical batches if that will make progress tracking, recovery, and validation easier. The feasible size and duration depend on the specific import and environment.

 

There is no published hard upper limit (for example, a maximum TB size per import job) for the AEM Assets Bulk Import Tool. Adobe positions the tool for large-scale migrations ranging from hundreds of GB to multiple TBs of assets.

However, Adobe does not describe it as unlimited. The practical limit depends on factors such as:

• Number of assets
• Asset sizes
• Asset processing requirements (renditions, metadata extraction, Asset Compute)
• AEM environment capacity and performance
• Source storage performance (S3, Azure Blob, etc.)

For very large migrations (multi-TB), Adobe generally recommends performing a pilot run and, where appropriate, splitting the migration into logical batches for easier monitoring and recovery

ref. Migrating 15TB Asset to AEM cloud. | Community 

ref. Using Bulk Import with AEM Assets | Adobe Experience Manager as a Cloud Service