Azure Virtual Machines - Handson.txt - On-Premises vs Azure Virtual Machines In Microsoft Data-centers Azure Virtual Machines(VMs are hosted on Windows

Azure Virtual Machines - Handson.txt - On-Premises vs Azure...

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On-Premises vs Azure Virtual MachinesIn Microsoft Data-centers, Azure Virtual Machines (VMs) are hosted on Windows Server 2012 R2 Hyper-V servers. But these VMs are different from On-Premises VMsin the following aspects:Console access for Azure VMs can be given by enabling monitoring option.Azure supports Generation 1 VMs only.Azure VMs do not support VHDX format.Azure VMs do not support OS upgrade.Azure VMs depend on the VM size and support more than 1 NICs.Deployment ScenariosTypical deployment scenarios of VMs are listed below,Create Test and Dev EnvironmentsExtending your data center to the cloudHosting certain applications in the cloud that can leverage benefits of the cloud. Example - Seasonal Applications.Installing Recovery Site using IaaS-based DRS approach that provides significantcosts savings.High-performance computing to solve complex problems involving millions of variables or calculations such as an earthquake.Big data analysis that involves processing and mining massive datasets.Planning ConsiderationsWhile planning for the virtual machine deployment, you have to consider the following,1.Suitable and Unsuitable Workloads2.Supported and Unsupported Server Roles3.Supported and Unsupported Server Features1. Suitable WorkloadsAzure VMs can be used for the following Workloads.Highly available service workloads. E.g., Online Stores.Unpredictable Spikes - E.g., News Channels.Periodic workloads - E.g., Retail sales spurt during Holiday Season.Steady workloads - E.g., Extend or offload existing infrastructure to the cloud.Unsuitable WorkloadsWhen Planning Azure VMs, it is also important to understand that not every application or service is a suitable fit for the cloud.ExamplesLow volume or limited growth workloads - such services or applications can be run on commodity hardware on-premise and will be less expensive than in the cloud.Regulated environment workloads - Certain data is regulated by an organization or the local government. Such restricted and confidential data must be kept on-premises.2. Unsupported Server RolesMost of the Windows Roles can be enabled on Azure VMs, but few Roles are not supported in Azure VM.Dynamic Host Configuration Protocol ServerHyper-V (Hyper-V role is supported in Azure Ev3 and Dv3 series VMs only)Rights Management ServicesWindows Deployment Services3. Unsupported Server FeaturesThe following significant features are not supported.
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BitLocker Drive Encryption (on the operating system hard disk, may be used on data disks)Internet Storage Name ServerMultipath I/ONetwork Load BalancingPeer Name Resolution ProtocolRRASDirectAccessSNMP ServicesStorage Manager for SANsWindows Internet Name ServiceWireless LAN ServiceAzure Cost Optimization ToolsNow you know the consideration, the next major planning factors with any cloud-based service are:Availability of resourcesCost optimization.
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