Data Domain: How to resolve issues with high space utilisation or a lack of available capacity on Data Domain Restorers (DDRs)

Environment:

Data Domain

 

Description:

This document contains a step by step procedure to assist with issues around high space utilisation or a lack of available capacity on Data Domain Restorers (DDRs)

 

Resolution:

Initially determine whether active tier clean needs to be run, then check for large amounts of replication lag against source replication contexts.Check for mtrees which are no longer required,and old/superfluous mtree snapshots. Also, check for an unexpected number of old files on the system,backups which include a large number of small files, lower than expected de-duplication ratio. Check whether the system is a source for collection replication and whether data movement is being regularly run, then add additional storage to the active tier.

 

For a detailed step by step resolution please refer to DELL EMC Support Solution 333479 https://support.emc.com/kb/333479

 

 

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