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 December 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.


Upgrade Data Domain: Historical database pruning failed (particularly after upgrade to DDOS 6.2.x), with "Database error(sqlite3 1 no such table: hd_perf_clgrp)" or similar error

Data Domain Restorers (DDRs) use a historical database to record events (such as various performance metrics) over time. 

Upgrade Process related to DD High Availability can cause a kernel PANIC and reboot due to a memory leak

A kernel PANIC can occur on either the active or the standby node on a DD HA cluster, with with following strings being logged to "ha.log":  

Upgrade How to import a CA signed certificate for HTTPS access to Data Domain System Manager

Importing a CA signed certificate allows for HTTPS access to Data Domain System Manager without needing the default self-signed certificate for https installed to the browser

Upgrade Data Domain: Data Domain Virtual Edition(DDVE) which are Cloud deployed (ATOS), may run out of Local-Metadata Storage

Data Domain Virtual Edition(DDVE), is a software-only storage Appliance, which can be either on-prem or cloud deployed

Upgrade Data Domain ConnectEMC disabled settings after the DDOS upgrade to

After a DDOS upgrade to the previous ConnectEMC notification settings is rollback to email and new Alerts are not sent to us.

Upgrade To set and change System passphrase on Data Domain system

The system passphrase must be set before the system can support data encryption,  

Upgrade Data Domain: Filesystem space utilization alerts

All Data Domain Restorers (DDRs) contain a pool/area of storage known as the 'active tier

Upgrade Data Domain - Hostname missing from Daily Alert Summary email subject line

In some versions of DDOS 6.2, the system hostname may not appear in the subject line of Daily Alert Summary emails, but does appear in daily Autosupport subject lines, as shown below.

Upgrade Cloud DR - Log collection of Cloud Disaster Recovery Agent(CDRA) and Cloud Disaster Recovery Server (CDRS)

From the CDRA page ( select System menu option, click Log Collection

Upgrade Data Domain: EVT-QUOTA-00001: Mtree Quota Soft limit reached

The cause for this alert is that soft quota is assigned to an MTree in the DD and the amount of data (pre-comp) in such MTree has exceeded the configured soft limit


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