I assume you use DDBEA?  You should move you question to DD forum - this is general area reserved for questions about DECN only.

Do you see those also after they were supposed to expire AND DD cleanup has run?  (typically once per week)

I have the same problem too. I've noticed that it's only about databases with simple recovery model. DD cleaning runs every Tuesday but expired backups stay. I've already created the SR.

You have to run a command to purge the expired backups. We include this command in the backup job, as an additional step after the backup is performed.

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@Grime121 wrote:

You have to run a command to purge the expired backups. We include this Wegmans Login command in the backup job, as an additional step after the backup is performed.

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I've noticed that it's only about databases with simple recovery model. DD cleaning runs every Tuesday but expired backups stay. I've already created the SR.

To configure Data Domain Boost to remove old backup directories before starting a backup operation

Whether this is problematic or not depends on many factors  If you're not compressing your backups with SQL Server, the Data Domain will be able to deduplicate the data more efficiently, but more data will have to travel through the network.

Thanks for sharing

hello sir did you get your sollution?

TellPopeyes

Just an obvious question.

What actually deletes the data on the Data Domain is the cleaning process.

Is the cleaning configured and scheduled?

If the cleaning is scheduled and runs regularly, then we need to investigate if MSSQL communicates with Data Domain properly what sets have expired, so Data Domain can delete them.

Data Domain only deletes what is told to delete.

Hope it helps

Gonzalo