# Migration

**URL:** <https://community.sonatype.com/t/migration/7267>\
**Category:** Best Practices\
**Tags:** nexus-repository\
**Created:** [September 9, 2021, 5:53pm UTC](https://community.sonatype.com/t/migration/7267 "2021-09-09T17:53:47Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![mpiggott](https://avatars.discourse-cdn.com/v4/letter/m/f0a364/32.png) [@mpiggott](https://community.sonatype.com/u/mpiggott)\
**Post date:** [September 9, 2021, 7:54pm UTC](https://community.sonatype.com/t/migration/7267/2 "2021-09-09T19:54:40Z")

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Yes, Nexus may delete files which are not referenced in the database.

If you were starting from new when creating the s3 blobstores you could utilize the _prefix_ option with distinct values for each instance, however that cannot be changed once the blobstore has been created.

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_[View the full topic](https://community.sonatype.com/t/migration/7267)._