To understand how you can design applications for connectivity considerations, see these examples:. The first step for your application failover is to specify this replica as primary. This step assumes you already have a domain controller in the secondary.
The step may not be necessary if you choose to do an auto-failover. Fail over your web and application tiers only after the database failover is completed. If you have helped to protect the SQL machines with Site Recovery, you just need to create a recovery group of these machines and add their failover in the recovery plan. Create a recovery plan with application and web tier virtual machines.
The following steps show how to add failover of the database tier:. Import the scripts into your Azure Automation account. Follow the instructions available in the script to create an automation variable. This variable provides the name of the availability groups.
We recommend the following approach only when using such technologies. Before triggering test failover of the recovery plan, recover the VM from the backup taken in the previous step. Force a quorum in the VM that was restored from backup. Ensure that the load balancer in the failover network has one IP address, from the front-end IP address pool that corresponding to each availability group listener, and with the SQL Server VM in the back-end pool.
In later recovery groups, add failover of your application tier followed by your web tier for this recovery plan. After you add the script in Step 3 and validate it in Step 4, you can do a failover of the recovery plan created in Step 3. The failover steps for application and web tiers should be the same in both test failover and failover recovery plans.
Site Recovery doesn't provide guest cluster support when replicating to an Azure region. SQL Server Standard edition also doesn't provide a low-cost disaster recovery solution. In this scenario, we recommend you protect the SQL Server cluster to a standalone SQL Server instance in the primary location and recover it in the secondary.
Configure an additional standalone SQL Server instance on the primary Azure region or at on-premises site. Configure the instance to serve as a mirror for the databases you want to help protect. Configure mirroring in high-safety mode. As it's a high-safety mirror copy, it will be synchronized with the primary cluster but replicated using Site Recovery replication. This operation is done from the mirror instance to the original cluster with re-establishment of the mirror.
This coverage applies to all Site Recovery scenarios: on-premises to Azure disaster recovery and cross-region Azure IaaS disaster recovery. Remove From My Forums. Answered by:. Archived Forums. Sign in to vote. Hello, we have 2 sites in the USA. We also have 2 Dell SANs replicating to each other. Our servers are running Server r2 and we are using SQL server Also they are being replicated to SAN at site b.
S and SQL software. If you don't have the option to disable geo-replication on the storage account, keep all data and log files for a database on the same disk. If you must use more than one disk due to the size of the database, deploy one of the disaster recovery solutions listed earlier to ensure data redundancy.
Decide if an availability group or a failover cluster instance is the best business continuity solution for your business. Then review the best practices for configuring your environment for high availability and disaster recovery. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Is this page helpful? Please rate your experience Yes No. Any additional feedback? Submit and view feedback for This product This page.
View all page feedback. In this article. Availability replicas running in Azure VMs in the same region provide high availability. You need to configure a domain controller VM, because Windows failover clustering requires an Active Directory domain. For higher redundancy and availability, the Azure VMs can be deployed in different availability zones as documented in the availability group overview.
Shared managed disks are an Azure product that allow attaching a managed disk to multiple virtual machines simultaneously. For shared storage and data replication solutions from Microsoft partners, contact the vendor for any issues related to accessing data on failover. Availability replicas running across multiple datacenters in Azure VMs for disaster recovery.
This cross-region solution helps protect against a complete site outage. Within a region, all replicas should be within the same cloud service and the same virtual network. Because each region will have a separate virtual network, these solutions require network-to-network connectivity. For more information, see Configure a network-to-network connection by using the Azure portal.
Principal and mirror and servers running in different datacenters for disaster recovery. You must deploy them by using server certificates. Production databases backed up directly to Blob storage in a different datacenter for disaster recovery.
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