March 28, 2023

Top 20 AWS Application Migration Service (AWS MGN) Interview Questions and Answers

  

The main migration service advised for lift-and-shift migrations to Amazon is AWS Application Migration Service (AWS MGN). For upcoming migrations, customers who presently use Server Migration Service (SMS) are urged to transition to Application Migration Service.

Your transfer to the cloud is sped up and made simpler by Amazon Application Migration Service. You may instantly reap the rewards of moving applications to the cloud without making changes and with little to no downtime.

You can move your applications to AWS from physical infrastructure, VMware vSphere, Microsoft Hyper-V, Amazon Elastic Compute Cloud (AmazonEC2), Amazon Virtual Private Cloud (Amazon VPC), and other clouds using the AWS Application Migration Service.

 

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Ques. 1): What key distinctions exist between Amazon Server Migration Service and AWS Application Migration Service?

Answer:

The Application Migration Service (MGN) offers minute-long cutover windows and continuous, block-level replication. The Server Migration Service (SMS) offers cutover windows of a few hours and gradual, snapshot-based replication.

The main service advised for moving your apps to AWS is Application Migration Service. You have until March 31, 2023, to use SMS APIs in the event that Application Migration Service is not offered in a certain AWS Region.

 

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Ques. 2): How long can my server volumes be replicated from my local environment to AWS?

Answer:

Your local servers can be replicated to Amazon for up to 90 days (per server). Use time is measured from the start of a server replication till the replication task is stopped. Your replication task will be automatically cancelled after 90 days. Please discuss your use case with the AWS Support team if you want to raise this restriction.

 

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Ques. 3): What are the main advantages of transferring on-premise Hyper-V VMs using AWS Server Migration Service?

Answer:

SMS enables users to greatly decrease human effort in migration by automating an incremental replication of live server volumes to the AWS cloud as AMIs. By letting users schedule replications and monitor the progress of a group of servers, SMS manages server migrations, easing the logistical strain of organising massive server migrations. Customers may test server migrations with ease thanks to incremental replication capability.


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Ques. 4): What does AWS Server Migration Service's multi-server migration entail?

Answer:

Applications can now more easily and affordably be moved from on-premises datacenters to Amazon EC2 thanks to the multi-server migration functionality provided by AWS Server Migration Service. Instead of moving each server separately, multi-server migration enables you to move whole application stacks. Applications can be divided into groups of servers, and you can replicate them all together and keep track of their migration progress. With an automatically created CloudFormation Template, you can easily run and configure the migrated application.


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Ques. 5): How can I use Server Migration Service's multi-server migration feature?

Answer:

The first step after importing the on-premises server catalogue into Server Migration Service via the SMS Connector is configuring an application using the CLI or APIs. There is no need to take any more step if you are already utilising Server Migration Service and have setup an SMS role using a managed policy. A new role is necessary for multi-server migration in order to use CloudFormation to launch instances.


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Ques. 6): What kind of consistency is offered by AWS Server Migration Service for snapshots?

Answer:

For the servers that are a part of an application group, AWS Server Migration Service generates crash consistent snapshots. All of the servers inside an application's framework are prompted to take these snapshots at roughly the same time. Moreover, you can use Volume Shadow Copy Service (VSS) to take application consistent snapshots on servers running Windows operating systems in VMware environments.

 

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Ques. 7): What does the AWS Server Migration Service produce?

Answer:

Each duplicated server disc is saved as a fresh Amazon Machine Image (AMI), which is then usable to start an EC2 instance (virtual machine) in the AWS cloud. Server Migration Service will launch the servers in a CloudFormation stack using an automatically created CloudFormation template if you are utilising application groups.


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Ques. 8): In my virtualization environment, is it safe to deploy the AWS Server Migration Service Connector?

Answer:

Absolutely, confidential data is not collected by the AWS Server Migration Service Connector; it simply obtains snapshots of server volumes and basic VM inventory data from VMware vCenter.


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Ques. 9): What System Center permissions are necessary to deploy SMS Connector and begin migration?

Answer:

With the SCVMM server, the SMS connection securely connects using the Windows remote management protocol (WinRM). A non-admin AD user must be added to the SCVMM host's "Remote Management Users" group, have restricted access to the CMIV2 and SCVMM WMI objects, and be a member of the "Delegated administrator" group in order to use the connector. To securely communicate remote commands from Connector deployed on a private network inside your datacenter, a firewall port must be opened on the SCVMM server. Also, the Hyper-V machine's VM data storage needs to provide the AD user read access. For additional security, customers may configure WinRM to allow only encrypted traffic over SSL using self-signed certificate and limit access to Connector IP/hostname alone. 

 

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Ques. 10): How does AWS Server Migration Service's multi-server support function?

Answer:

A replicated application can be launched from a landing zone that you designate, as well as from a group of on-premises servers that can include one or more subgroups. You can also set a replication frequency, offer configuration scripts, and group on-premises servers into an application. After all of the AMIs are available, the Server Migration Service will organise the migration of all the underlying servers that make up the application groups before creating a CloudFormation Template that can be started in the landing zone. Server Migration Service will setup the application in accordance with your selected configuration scripts after you start it using the automatically generated CloudFormation Template.

 

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Ques. 11): After I launch my application in the AWS cloud, how do I reconfigure it?

Answer:

For each server, you can specify a unique configuration script when defining an application. The service will execute the configuration script on your behalf when the server has been launched and transferred to the AWS cloud. For instance, instead of logging into each instance and manually updating it, you can use a configuration script to update database connection strings on your application servers.


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Ques. 12): The Amazon Server Migration Service Connector: What is it?

Answer:

It is a pre-configured FreeBSD virtual computer called the connector appliance (in OVA format). You must first install the Amazon Server Migration Service Connector virtual appliance on your on-premises VMware vCenter system before configuring AWS Server Migration Service.

 

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Ques. 13): Who can benefit from AWS Server Migration Service for Hyper-V?

Answer:

Hyper-V support in SMS is advantageous for any customer looking to move their Microsoft Hyper-V virtual machines managed by SCVMM or standalone Hyper-Vs to AWS. These may include business clients, System integrators, and IT consulting companies who assist business clients in moving their Hyper-V workloads to AWS.

 

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Ques. 14): AWS Server Migration Service is already something I use. How does having this talent help me?

Answer:

With multi-server migration, you can migrate all of your servers at once rather than having to create specialised tooling to manage the migrations of the many servers that make up your application. You may use a CloudFormation Template to launch all of the servers automatically, and you can keep it continuously updated with the most recent AMIs created for each replication run. Without requiring any new setup, you can begin using the multi-server migration.

 

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Ques. 15): Which operating systems are supported by AWS Server Migration Service?

Answer:

Windows Server 2003, 2008, 2012, and 2016 as well as Windows 7, 8, and 10 can be migrated using the AWS Server Migration Service. Red Hat Enterprise Linux (RHEL), SUSE/SLES, CentOS, Ubuntu, Oracle Linux, Fedora, and Debian Linux are all supported.

 

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Ques. 16): What elements does the AWS Server Migration Service for moving Hyper-V virtual machines have?

Answer:

The SMS Connector, an on-premises appliance for SMS, communicates with the AWS service. The SMS service produces the AMI gradually from the transmitted volume after receiving volumes of active Hyper-V VMs from the Connector.

 

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Ques. 17): Can I use Amazon Server Migration Service to transfer the applications listed in AWS Application Discovery Service?

Answer:

Unfortunately, Server Migration Service does not support the application groupings created using AWS Application Discovery Service. For multi-server migration, support is being introduced for apps found or defined in the Application Discovery Service to be made immediately available in the Server Migration Service.

 

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Ques. 18): Which operating systems are supported by AWS Server Migration Service?

Answer:

Windows Server 2003, 2008, 2012, and 2016 as well as Windows 7, 8, and 10 can be migrated using the AWS Server Migration Service. Red Hat Enterprise Linux (RHEL), SUSE/SLES, CentOS, Ubuntu, Oracle Linux, Fedora, and Debian Linux are all supported.

 

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Ques. 19): What vCenter permissions are needed by the AWS Server Migration Service Connector?

Answer:

The ability to create and delete snapshots on VMs that need to be moved to Amazon is a bare minimum need for the AWS Server Migration Service Connector.

 

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Ques. 20): Both VMware and Hyper-V setups are ones I manage. Can I simultaneously move VMware and Hyper-V virtual machines?

Answer:

Sure, but to simultaneously migrate VMs from both VMware and Hyper-V environments, you will require two distinct SMS Connectors.


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