About the Cloud Catalyst migration -dryrun option
The -dryrun option can be added to the nbdecommission -migrate_cloudcatalyst command. The -dryrun may be useful in some environments as a test run for the migration. The -dryrun option does not perform all migration steps and so a successful execution with this option does not guarantee success when the actual migration is attempted. This option is useful to identify any errors that can be addressed before the actual migration.
The -dryrun option creates the new MSDP cloud tier server and migrates the Cloud Catalyst data. Then it deletes the newly added MSDP cloud tier server before your environment is returned to the previous state.
Note:
The -dryrun option does not modify the master server catalog entries to move the images to the new MSDP cloud tier server. Therefore, you cannot do a test restore or other operations to access the data when using the -dryrun option.
After using the -dryrun option you must manually delete the newly added cloud volume in the cloud storage (for example: AWS, Azure, or other cloud vendor) using the cloud console or other interface. If you do not delete this new volume, then future migration operations are affected.