Data Domain Encryption

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此知识库文章介绍了 DD PCR 在压缩后报告大于 DD 文件系统活动层大小的 MTree 的症状。

Data Domain 在 Avamar 用户界面中显示为红色和/或 AUI 是由几个不同的问题引起的。这是一条解决方法路径，可将您指向这些主题的现有知识库文章。

当存储区 Data Domain 填满时，症状包括容量使用率高、重复数据消除率低和到期失败。根本原因是容量规划不充分、备份配置不正确以及跨 DD、Networker、Avamar 和 Cyber Recovery 数据避风港的存储集积累不受控制。

This article describes a known limitation where a Data Domain system fails to join an Active Directory (AD) domain if the AD join account password contains multi-byte characters. A workaround is provided.

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)."

Data Domain (DD) appliances support a Key Management Interoperability Protocol (KMIP) compliant key manager. This article provides the steps to configure the external key manager to encrypt the DD File System (DDFS). (The setup of the external key manager is not covered here. The customer is responsible for setting up the KMIP key manager as a prerequisite.)

本文介绍了 Data Domain Virtual Edition （DDVE） 文件系统由于潜在的非易失性随机存取存储器 （NVRAM） 不匹配而无法启动的情况。它还提供了一种经过验证的解决方法来恢复文件系统可用性。

Dell EMC Data Domain workaround and mitigation is available before remediation for the Apache Log4j Remote Code Execution Vulnerability that may be exploited by malicious users to compromise the affected system. Dell recommends implementing this remediation as soon as possible in light of the critical severity of the vulnerability.

This article provides download links and status information for current PowerProtect Data Domain Operating System (DDOS) releases, including feature and Long‑Term Support (LTS) versions. It also outlines upgrade considerations, documentation references, and supported platforms.

Data Domain Capacity Resolution Path.

FastCopy behavior on Retention Locked MTree subdirectory in backups or Managed File Replication (MFR) causes 'filesys show compression' of '0' on Globally and Locally compressed row.

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.

使用 OP 将存储迁移到 8 TB 包时的注意事项

Directly attaching failover interfaces back-to-back between two DDR may fail to be able to transfer data.

更换高速缓存层 SSD 后，Data Domain 文件系统 （DDFS） 可能会崩溃并导致设备重新启动，因为已编制索引的高速缓存条目变得不可读。

This article explains how to change the sync alert threshold using the command line. By default, the sync alert threshold is set to 24 hours. However, based on specific requirements, it may need to be adjusted for a particular mtree to prevent the error: “Sync-as-of time is more than 24 hours ago.”

This KB describes an issue that HA Rolling upgrade may fail for external enclosure firmware upgraded

How to reset or regenerate certificates due to expiration (or misconfiguration).

DDBMA: DDBMA cannot detect the new changed SQL hostname.

EVT-SPACE-00004: Space usage in cloud metadata storage has exceeded the 90% threshold.

This KB article describes about the alert that appears after the upgrade due to new security compliance audit introduced in DDOS 7.5.x and above

This article provides a table of supported stream counts for Data Domain OS version 7.x by Data Domain System Model.

Data Domain Virtual Edition (DDVE) system upgrade fails with filesystem shutdown error.

Data Domain Enterprise Manager (DDEM) / System Manager graphical user interface (GUI) is not accessible after upgrading to DDOS 7.x

写入 Data Domain 时，大型存储集的备份间歇性失败。观察到的错误是“5057-文件句柄过时”。这可能会在各种数据类型上观察到，但特定于跨数小时的大型备份。

调查数据移动故障或问题的基本故障处理步骤。

尝试删除空的 mtree 或 DDBoost，并且保留锁定（已启用或禁用）失败。

本文介绍在启用了保留锁定合规性的戴尔 Data Domain 系统上为 iDRAC 配置 SNMP 的过程。

本文概述了如何在 Data Domain 文件系统 （DDFS） 崩溃时修复问题并重新启用文件系统，并显示以下 PANIC 字符串：PANIC： ddr/dm/dmbt_iface.c： dmbt_update_entry_nolock