3.3 Introduction to Azure Site Recovery

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Time
18 hours 58 minutes
Difficulty
Intermediate
CEU/CPE
9
Video Transcription
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>> Welcome back. In this episode,
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we're going to discuss an introduction
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to Azure Site Recovery.
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Our objectives include understanding
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Azure Site Recovery and then also
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understanding Azure Backup services.
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As always, let's ask the question,
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what is Azure Site Recovery?
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Azure Site Recovery is all about
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business continuity and disaster recovery.
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It is a service that keeps
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your workloads and business applications up and
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running during outages and
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it stores backup data for Recovery.
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Azure Site Recovery encompasses two different services.
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The first is a Site Recovery Service.
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This is responsible for replicating
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>> your applications and
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>> virtual machines to another region
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in the event of a disaster outage.
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When the outage occurs in the primary site,
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you can failover to
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the secondary location and
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access your workloads from there.
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Once the primary is available again, you can fail back.
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There's also the Azure Backup Services.
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This is responsible for keeping your data
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safe and recoverable, like virtual machines.
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This is similar how you might protect
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your servers on-premises by utilizing
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a utility to backup files and
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applications on a server to disk or tape storage.
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Let's talk a little bit more about
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the specifics of Azure Site Recovery.
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Azure Site Recovery is an integral part of
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your business continuity and disaster recovery plan.
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It's responsible for orchestrating and
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replicating servers to another Azure region.
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You don't have to wait until there's
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a disaster to perform a failover.
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You can use this service for
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maintenance events in order to
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keep your workloads running,
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and Azure Site Recovery also
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>> provides the ability to have
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>> test runs to verify
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your failover strategy is going to be successful.
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What's really cool, is Azure Site Recovery
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is not just for Azure Virtual Machines.
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You can also replicate on-premises
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virtual machines and physical
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>> servers in the data center.
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>> This means you can take your on-premises servers and
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workloads and replicate them to
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Azure for disaster recovery purposes.
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There's no need to build
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another data center in another location.
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You can use Azure as your disaster recovery site.
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Even if you do have a secondary data center,
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you can still use Azure Site Recovery to replicate
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your on-premises servers to
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that secondary data center through
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Azure. I think that's pretty neat.
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Don't you think that's neat? Even on top of that,
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you can take workloads over an Amazon Web Services or
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AWS and use Azure as your recovery site.
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This introduces the idea of having
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a multi-Cloud strategy when it comes to Cloud Services.
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Site Recovery can also
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replicate several applications running on
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supported machines.This
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includes workloads like Active Directory,
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web apps using IIS and SQL,
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SharePoint Exchange,
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SAP, Windows file servers, and many more.
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We've been talking about Azure Site Recovery
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for disaster recovery scenarios,
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but we can also use it for migration.
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If we look at our exam objectives,
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it does list migrating servers
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to Azure using Azure Site Recovery.
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This is a different process than what we
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discussed in previous episodes.
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If you also remember from that episode,
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I mentioned there was a previous version
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of the Azure Migrate tools.
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In the previous version,
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it did not support migration of
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>> Hyper-V virtual machines.
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>> At the time, using Azure Site Recovery was
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the only option for Hyper-V virtual machine migration.
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Again, this is where I mentioned that
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exam objectives and test questions
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may not be 100 percent up-to-date
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just yet with the Cloud technology.
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So understanding a few historical things,
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in this case, is going to serve you well on the exam.
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This is why it's also important to
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review exam objectives before you sit for
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the exam because they often do and
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list updates that are going to
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>> be made to the objectives.
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>> You might be asking, what's the
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>> difference between using
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>> Site Recovery for business continuity
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and using it for migrations.
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It's actually pretty simple.
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You would still set up replication from
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on-premises machines to Azure and perform a failover.
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But once a failover is complete,
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you simply don't failback.
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If you're taking on-premises servers to Azure after
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the failover is completed and workloads are verified,
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you would turn off or decommission
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the on-premises resource and
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just use the new one running in Azure.
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This process can also use if you want to
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migrate Azure virtual machines from
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one region to another region or
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migrate an AWS instance into Azure.
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Next, let's discuss Azure Backup.
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What Azure Backup does is pretty evident from his name.
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It provides backup services utilizing the Azure Cloud.
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Keeping with the theme of Azure Recovery Services,
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Azure Backup is not just for Azure Virtual Machines.
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You can also backup on-premises servers and workloads,
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thereby offloading any on-premises
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backup solutions you might have hosted now.
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What Azure Backup provides is app consistent,
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automatic, and secure backup solution.
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You can backup at granular levels
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on the server such as files,
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folders, machine system states,
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and Apple ware data backups.
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You don't have to worry about expanding storage,
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management, or replication,
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and you can use replication
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>> technologies like LRS or GRS,
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>> which is a concept we learned from
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our storage account discussions
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>> in our earlier episodes.
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>> Also, you only have to pay for the
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>> storage that you use.
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>> You might be asking yourself,
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why would I use Azure Backup over Azure Site Recovery?
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Azure Backup provides data backup
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and recovery at a granular level,
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while Azure Site Recovery is for
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the entire server and requires failing it over.
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With Azure Backup, you can just restore files, folders,
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or machine system states,
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instead of replicating the entire server
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and performing a failover.
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Azure Backup has a couple of different components.
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The first is a recovery services vault.
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This vault is a resource that can be configured
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inside of most Azure resources like virtual machines.
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The Recovery Service Vault must be in
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the same location or region
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as the virtual machines being backed up.
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Via virtual machines and multiple regions,
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you will need a vault in each of those regions.
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The next component is a backup policy.
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This defines how backups are
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taken and how long they should be retained.
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You can set different retention periods for the daily,
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weekly, monthly, and even yearly backups.
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Here on the right, we have a screenshot
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of what the backup policy looks like
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and we'll take a further look at
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these in our demo in the next episode.
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Finally, there is the MARS agent or
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the Microsoft Azure Recovery Services agent.
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This is used by Azure Backup to back up the files,
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folders, and system state from
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on-premises and Azure servers.
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It's responsible for sending the data to
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the recovery services vault inside of Azure.
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You can also combine this agent with
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the on-premises product
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System Center Data Protection Manager Server.
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You can have the servers backup
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to this on-premises server,
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then have the Data Protection Manager backup to
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evolve in Azure using the mars agent.
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That does it for discussing
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Azure Site Recovery and Azure Backup.
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I think it's best in the next episode
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if we jump into a demo so we can look at
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how we configure the services and
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get a better understanding of these concepts.
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See you in the next episode.
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