How to Create Database Availability Groups/DAG with Shell/Command on Microsoft Exchange Server

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This article describes How to Create Database Availability Groups/DAG with Shell/Command on Microsoft Exchange Server

Microsoft is a leading global vendor of computer software; hardware for computer, mobile and gaming systems; and cloud services. Microsoft's corporate headquarters is located in Redmond, Wash., and it has offices in more than 60 countries.

Windows Server refers to any type of server instance that is installed, operated and managed by any of the Windows Server family of operating systems.

Windows Server exhibits and provides the same capability, features and operating mechanism of a standard server operating system and is based on the Windows NT architecture.

Windows Server is generally capable of providing server-oriented services, such as the ability to host a website, user management, resource management across users and applications, messaging, security and authorization and many other server-focused services.

Microsoft Windows Server OS (operating system) is a series of enterprise-class server operating systems designed to share services with multiple users and provide extensive administrative control of data storage, applications and corporate networks.

Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs exclusively on Windows Server operating systems.

The first version was called Exchange Server 4.0, to position it as the successor to the related Microsoft Mail 3.5. Exchange initially used the X.400 directory service but switched to Active Directory later. Until version 5.0 it came bundled with an email client called Microsoft Exchange Client. This was discontinued in favor of Microsoft Outlook.

Exchange Server primarily uses a proprietary protocol called MAPI to talk to email clients, but subsequently added support for POP3, IMAP, and EAS. The standard SMTP protocol is used to communicate to other Internet mail servers.

Exchange Server is licensed both as on-premises software and software as a service (SaaS). In the on-premises form, customers purchase client access licenses (CALs); as SaaS, Microsoft charges a monthly service fee instead.

Microsoft designed Exchange Server to give users access to the messaging platform on smartphones, tablets, desktops and web-based systems. Telephony capabilities in Exchange Server support voice messages. Exchange users collaborate through calendar and document sharing. Storage and security features in the platform let organizations archive content, perform searches and execute compliance tasks.

Windows PowerShell is a shell initially developed by Microsoft for the purposes of task automation and configuration management. PowerShell is now an open source project, and it can be installed on Windows, macOS, and Linux platforms. This shell is based on the .NET framework, and it includes a command-line shell and a scripting language.

The Exchange Management Console (EMC) is a graphical user interface (GUI) that allows administrators to manage their Exchange organizations. Formerly known as the Exchange System Manager, the Exchange Management Console was announced as part of Exchange Server 2007.

The Exchange admin center (EAC) is the web-based management console in Exchange Server that's optimized for on-premises, online, and hybrid Exchange deployments. The EAC was introduced in Exchange Server 2013, and replaces the Exchange Management Console (EMC) and the Exchange Control Panel (ECP), which were the two management interfaces in Exchange Server 2010.

A database availability group (DAG) is the base component of the Mailbox server high availability and site resilience framework built into Microsoft Exchange Server. A DAG is a group of up to 16 Mailbox servers that hosts a set of databases and provides automatic database-level recovery from failures that affect individual servers or databases.

A DAG is created by using the New-DatabaseAvailabilityGroup cmdlet. A DAG is initially created as an empty object in Active Directory. This directory object is used to store relevant information about the DAG, such as server membership information and some DAG configuration settings. When you add the first server to a DAG, a failover cluster is automatically created for the DAG. This failover cluster is used exclusively by the DAG, and the cluster must be dedicated to the DAG.

Use the Add-DatabaseAvailabilityGroupServer cmdlet to add a Mailbox server to a database availability group (DAG). A DAG is a set of Mailbox servers that use continuous replication and managed availability to provide automatic database-level recovery from database, server, or network failures.
Add-DatabaseAvailabilityGroupServer cmdlet is available only in on-premises Exchange.

Use the Add-MailboxDatabaseCopy cmdlet to create a passive copy of an existing active mailbox database.
Add-MailboxDatabaseCopy cmdlet is available only in on-premises Exchange.

Now you can find some examples in this video.

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