Data Domain: Top Services Topics

This document contains the list of Top Services Topics for Data Domain, identified by EMC Support as the most trending topics for the month of February 2019.

It is recommended that you also check for important information such as advisories (ETAs, ESAs), and other key resources on the Support by Product pages on the EMC Online Support portal.


Data Domain: Space usage in Data Collection has exceeded 90% threshold

Data Domain sends alerts that is almost full (90-100%) and The Backup software is reporting a Data Integrity issue. This article will help to analyze the real cause if there is any issue in deletion of file or the DD is filled up to its limit.

Data Domain: Data Domain System Manager fails to open the login page, rather shows error as "The GUI Service is temporarily unavailable" while trying to login using Web Browser

User is unable to launch Data Domain System Manager from any Web Browser, error displayed is "The GUI Service is temporarily unavailable. Please refresh your browser. If the problem persists, please contact DataDomain support for assistance".  

Data Domain: Manual deletion of data from a DataDomain FAQ

This document aims to answer questions about why data might need to be deleted from a DataDomain, and how this can be achieved.

Data Domain: Data Domain Operating System (DDOS) upgrades from DDOS 5.x to DDOS 6.x may fail during the precheck stage stating that 'index files are in an old format'[1]

When upgrading the Data Domain Operating System (DDOS) from DDOS 5.x to 6.x the upgrade may fail in the precheck stage stating that on disk index files are in an old format which is not supported by DDOS 6.x.

DDMC FAQ and issue scenarios

DDMC FAQ and issue scenarios

Data Domain upgrade failed: file system shutdown error

During a DDOs upgrade, you can experience a rare race condition which causes the Filesystem to not be able to shutdown in preparation for the DDOS upgrade to take place.  You will see an alert saying the filesystem failed to cleanly shutdown & a core generated.   

Data Domain Management Center: How DataDomain Management Center (DDMC) gathers DD historical data, and guidance for resolving related alerts

DataDomain Management Center (DDMC for short) is a software released to customers, which installs on some VM hypervisros, to help with managing up to 100 DDs per DDMC instance from a single modern, comprehensive and useful graphical interface.

EVT-GC-00002: Unable to start scheduled file system cleaning

Any time the Data Domain Filesystem is not operational, and a scheduled cleaning is automatically started according to the preset schedule, the following alert will post as a reminder to the administrator, that a cleaning cycle has been skipped.


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