[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-08-11。"],[[["\u003cp\u003eThe Backup and DR agent is a small process installed on hosts that provides capabilities such as discovering and backing up applications, quiescing applications for consistent backups, and managing transaction logs.\u003c/p\u003e\n"],["\u003cp\u003eThe agent enables change block tracking for incremental backups, rescans storage buses, prepares application volumes for restores, and supports agent-based backup images for pRDMs and vRDMs on VMware VMs.\u003c/p\u003e\n"],["\u003cp\u003eFour different installer files are available for various operating systems (Red Hat, CentOS, SLES, Debian, Ubuntu, and Windows Server), and can be downloaded from the management console's Agent Management section.\u003c/p\u003e\n"],["\u003cp\u003eCommunication between the backup/recovery appliance and the agent is encrypted over SSL and uses port 5106, which must be open in the firewall, and the agent process should be excluded from antivirus monitoring.\u003c/p\u003e\n"],["\u003cp\u003eThe agent manages data movement by using a staging disk to store changed application data during each snapshot.\u003c/p\u003e\n"]]],[],null,["# About the Backup and DR agent\n\nThis page describes the Backup and DR agent, including\n[How to obtain the right Backup and DR agent for your host](#right-connector).\nThe Backup and DR agent is a small-footprint process that you install\non your hosts.\n\nBackup and DR agent capabilities\n--------------------------------\n\nThe Backup and DR agents:\n\n- Discover and backup individual and groups of applications, including\n Microsoft SQL Server clusters.\n\n- Quiesce applications for application consistency during backup.\n\n- Enable change block tracking on Windows hosts and low-splash on non-Windows\n hosts for incremental-forever backup.\n\n- Backup and manage transaction logs, including truncating database\n transaction logs and rolling database transaction logs forward for\n point-in-time recovery.\n\n- Rescan storage buses, bring new devices online, assign drive letters,\n import volume groups, and mount file systems based on the operating system\n of the application host.\n\n- Prepare application volumes for restore operations.\n\n- Enable agent-based backup images of applications on pRDMs and vRDMs on\n VMware VMs to avoid potential virtual server stun issues caused by VMware\n snapshots. Also, Backup and DR agents enable backups of Microsoft SQL Server\n clusters running on VMware VMs.\n\n- When the Backup and DR agent manages data movement, the backup/recovery appliance\n presents a staging disk to store a copy of changed application\n data during each snapshot job.\n\nObtain the right Backup and DR agent for your host\n--------------------------------------------------\n\nThe management console has four different Backup and DR agent installer files.\nEach is of a file type appropriate to its intended host type.\n\nDownload a Backup and DR agent installer file\n---------------------------------------------\n\nYou can download a Backup and DR agent installer file with a web browser from\nthe management console using the following steps:\n\n1. In the management console, go to the **Manage** drop-down menu and click\n **Appliances**.\n\n2. Right-click an appliance and select **Configure Appliance**.\n\n3. Select **Agent Management**. The four installer files appear at the top\n of the window. Download the agent installer file that you need.\n\n4. Depending on your host operating system, install the Backup and DR agent:\n\n - To install the Backup and DR agent on the Linux host, refer to\n [Install the Backup and DR agent on a Linux host](/backup-disaster-recovery/docs/configuration/linux-agent).\n\n - To install the Backup and DR agent on the Windows host, refer to\n [Install the Backup and DR agent on a Windows host](/backup-disaster-recovery/docs/configuration/windows-agent).\n\n | **Note:** Port 5106 must be open for `UDSAgent` to ensure that the backup/recovery appliance can communicate with the Backup and DR agent on the host. This requires an ingress firewall rule where the backup/recovery appliance is the source, the host running the agent is the target, and the target port is 5106. Also, you don't need to add port 5106 to the default ingress rule created for the appliance, as this specifies the appliance as the target.\n5. When the installation is complete, a secret key displays. Save the\n secret key in a notepad or in a text editor, you need to add this in the\n Backup and DR agent section in [Linux](/backup-disaster-recovery/docs/configuration/add-linux-hosts)\n or [Windows](/backup-disaster-recovery/docs/configuration/supported-windows)\n hosts. This secret key is valid for two hours.\n\nNetwork traffic\n---------------\n\nTraffic between the backup/recovery appliances and the Backup and DR agent on\nyour hosts is encrypted and communicates by SSL. The Backup and DR agent uses\nport 5106 by default for communication from the appliance. Make sure your\nfirewall permits communication through this port. If you have existing services\nusing this port, contact Support for assistance.\n\nAntivirus software\n------------------\n\nThese are some high-level recommendations for antivirus software. Specific\nantivirus or security products may call things by different names, not support\nsome features as process exclusion is commonly not supported, and are configured\nby different means.\n\n- **Exclude the `udsagent` process from Antivirus Monitoring** : This is\n typically called process exclusion or process threat level. Excluding\n anything that `UDSAgent.exe` for Windows or `udsagent` for Linux does from\n scanning provides the best performance for the backup and the least chance\n that the antivirus software blocks anything.\n\n- **Exclude scanning of mounted staging disks**: Prevent the antivirus\n software from scanning the files that Backup and DR Service writes to the\n staging disk. This is typically slower than reading files on the\n protected volume already.\n\n ### Windows\n\n C:\\Windows\\act\\*.*\n C:\\Windows\\act\\\n C:\\Program Files\\Google Cloud Backup and DR\\UDSAgent.exe\n C:\\Program Files\\Google Cloud Backup and DR\\driver\\aamservice.exe\n C:\\Program Files\\Google Cloud Backup and DR\\log\\*.*\n C:\\Program Files\\Google Cloud Backup and DR\\tmpdata\\*.*\n C:\\Program Files\\Google Cloud Backup and DR\\act_scripts\n\n ### Linux\n\n /opt/act/bin/udsagent\n /act/mnt\n\n | **Note:** You might still have failures if the antivirus software blocks the Backup and DR agent from opening or reading a file on the protected volume.\n- **Disable antivirus heuristics**: This is not required, but may help in\n some cases. Antivirus heuristics typically block operations that look\n suspicious. When the Backup and DR agent is running a backup of a system\n volume, it looks suspicious since it is reading the contents of the\n Windows directory and recreating it on the staging disk.\n\n In some cases, disabling the antivirus software fails to prevent backup\n failures, but disabling the antivirus software heuristics allows backup\n images to succeed.\n\nWhat's next\n-----------\n\n- To install Backup and DR agent on a Linux host, see [Install the Backup and DR agent on a Linux host](/backup-disaster-recovery/docs/configuration/linux-agent)\n\n- To install Backup and DR agent on a Windows host, see [Backup and DR agent on Windows hosts](/backup-disaster-recovery/docs/configuration/windows-agent)\n\n- To upgrade Backup and DR agent, see [Maintain Backup and DR agents on hosts](/backup-disaster-recovery/docs/configuration/manage-agent)"]]
