Data Domain

This document highlights minimum, recommended, and latest code versions for Dell Technologies Enterprise and Datacenter Infrastructure products. We carefully evaluate and monitor code deployment data to ensure that product releases meet our stringent expectations to provide our customers with reliable products and solutions.

Veeam UI Displays Different Capacity Values When Data Domain Hard Limit Quota is Configured and Enabled.

PANIC: ddr/repl/lrepl_client.c: mrepl_send_file: 16808: repl ctx x:x: mrepl_send_file: file/filesystem is read-only.

After changing the time zone and rebooting the DD, DDOS generates alerts which show the scheduled cleaning failed to start.

How to determine which files were recently deleted or expired.

This article provides instructions for Customers, Partners, and Internal users to update Data Domain License File Formats (from ".lic" to ".xml" or from ".xml" to ".lic") for license compatibility with the DD OS Version.

This Knowledge Article outlines instructions for updating licenses from the Software Licensing Central (SLC) to correct License Locking ID mismatch on Data Domain Appliances.

This article outlines how to access your Data Domain Transformational Licensing Agreement (TLA) in My Account | Dell Software Licenses.

PowerProtect DD System Manager (DDSM/UI) is slow to load content.

This article outlines the procedure for performing an offline firmware update on Aries-KP model drives (HUS72604CLAR3000 and HUS72604CLAR4000) from version N9C0 to NE70.

This article describes an issue in Data Domain Operating System (DDOS) version 7.8 that prevents downloading core dumps from the web interface.

AWS is changing their server certificates from S3 to certificates issued by Amazon Trust Services CA. This change impacts Data Domain systems that are configured with Cloud Tier and Data Domain Virtual Edition (DDVE) deployed on AWS Cloud platform with Active Tier on Object Storage (ATOS).

This article describes how to migrate AWS Elastic Block Store (EBS) volume from gp2 to gp3 type for Data Domain Virtual Edition (DDVE) appliance deployed in AWS cloud platform.

This article provides estimates on scheduling lead time when booking RPS upgrades.

This article provides a quick check on the Data Domain to see if the Disk Library for Mainframes (DLm) is configured. From the Data Domain (DD) Command Line Interface (CLI) or ASUP output, perform a string search on 'dlmconfig' which is a decent DLm indicator. DLM PSNT and Serial number can possibly be found as well.

Avamar backups integrated with Data Domain (DD) fail. The ddrmaing.log reports "Token encryption failed with error", and the ddfs.info file reports "This key has an invalid key magic".

Replicated period for log backups for SQL is showing the wrong retention period on the Destination side.

The /ddvar (also known as /ddr/var) filesystem is the primary location that DDOS uses to store logs. This knowledge base article describes the common causes and steps to take to help alleviate or free up space inside /ddvar

A few Backup applications using NFSV4 Client backups to Data Domain receive Remote I/O Errors. Clients cannot resolve the same error.

Some customers may rely on GUI Data management-->Mtree -->'Daily Written' numbers to check their backup size, this is not accurate when there is data-movement on the same mtree as the diagram may show both Active and Cloud tier injestions, hence both backup and data-movement would be counted in resulting to misleading number for backup alone statistics.

How to diagnose a failed or absent Trust Platform Module (TPM) on a Data Domain system.

Attempts to delete a mtree or DDBoost that is empty and the retention-lock (enabled or disabled) fails.

Data Domain: Increase TCP Window size to improve Backup & Restore performance.

When attempting to upload an RPM file using the Data Domain System Manager UI, clicking "BROWSE" does nothing. The expected response is having File Explorer appear, enabling selection and upload of the upgrade file. This situation is more of a nuisance.

Basic troubleshooting steps to investigate data movement failures or issues.

File systems created before DDOS 7.5.x may panic after upgrading to DDOS 7.10.x or later if mtree replication is configured. The panic message is "ddr/dm/dmbt_iface.c: dmbt_get_entry_inode: 19746: !(ret == DD_ERR_NONE)."

There are circumstances where we would want to backup the historical database on a DD.

This article explains how to use the Goav dd check-ssl feature to resolve SSL connectivity issues between Avamar and Data Domain.

Data Domain: DDMC: Added DDs and DDVEs are not listed under Configure update section when using AD users

Data Domain Virtual Edition (DDVE) deployed in Microsoft Azure Cloud requires an operating disk, NVRAM disk, and as many metadata disks as necessary for storing backups. However, initially after deployment and with no storage manually added, a "System" disk appears which is not for DDVE, the operating system, or the NVRAM.