virtual machines overview acrolinx refresh

tomvcassidy · tomvcassidy · commit 5cf00d273846 · 2024-07-01T10:21:04.000-04:00
diff --git a/articles/virtual-machines/overview.md b/articles/virtual-machines/overview.md
@@ -5,7 +5,7 @@ author: ju-shim
 ms.service: virtual-machines
 ms.collection: linux
 ms.topic: overview
-ms.date: 01/02/2024
+ms.date: 07/01/2024
 ms.author: jushiman
 ms.custom: mvc, engagement-fy23
 ---
@@ -14,7 +14,7 @@ ms.custom: mvc, engagement-fy23
 
 **Applies to:** :heavy_check_mark: Linux VMs :heavy_check_mark: Windows VMs :heavy_check_mark: Flexible scale sets 
 
-Azure virtual machines are one of several types of [on-demand, scalable computing resources](/azure/architecture/guide/technology-choices/compute-decision-tree) that Azure offers. Typically, you choose a virtual machine when you need more control over the computing environment than the other choices offer. This article gives you information about what you should consider before you create a virtual machine, how you create it, and how you manage it.
+Azure virtual machines (VMs) are one of several types of [on-demand, scalable computing resources](/azure/architecture/guide/technology-choices/compute-decision-tree) that Azure offers. Typically, you choose a virtual machine when you need more control over the computing environment than the other choices offer. This article gives you information about what you should consider before you create a virtual machine, how you create it, and how you manage it.
 
 An Azure virtual machine gives you the flexibility of virtualization without having to buy and maintain the physical hardware that runs it. However, you still need to maintain the virtual machine by performing tasks, such as configuring, patching, and installing the software that runs on it.
 
@@ -46,18 +46,18 @@ The default resources supporting a virtual machine and how they're billed are de
 | Resource | Description | Cost | 
 |-|-|-|
 | Virtual network | For giving your virtual machine the ability to communicate with other resources | [Virtual Network pricing](https://azure.microsoft.com/pricing/details/virtual-network/) |
-| A virtual Network Interface Card (NIC) | For connecting to the virtual network  | There is no separate cost for NICs. However, there is a limit to how many NICs you can use based on your [VM's size](sizes.md). Size your VM accordingly and reference [Virtual Machine pricing](https://azure.microsoft.com/pricing/details/virtual-machines/linux/). | 
+| A virtual Network Interface Card (NIC) | For connecting to the virtual network  | There's no separate cost for NICs. However, there's a limit to how many NICs you can use based on your [VM's size](sizes.md). Size your VM accordingly and reference [Virtual Machine pricing](https://azure.microsoft.com/pricing/details/virtual-machines/linux/). | 
 | A private IP address and sometimes a public IP address. | For communication and data exchange on your network and with external networks | [IP Addresses pricing](https://azure.microsoft.com/pricing/details/ip-addresses/) |
 | Network security group (NSG) | For managing the network traffic to and from your VM. For example, you might need to open port 22 for SSH access, but you might want to block traffic to port 80. Blocking and allowing port access is done through the NSG.| There are no additional charges for network security groups in Azure. |
-| OS Disk and possibly separate disks for data. | It's a best practice to keep your data on a separate disk from your operating system, in case you ever have a VM fail, you can simply detach the data disk, and attach it to a new VM. | All new virtual machines have an operating system disk and a local disk. <br> Azure doesn't charge for local disk storage. <br> The operating system disk, which is usually 127GiB but is smaller for some images, is charged at the [regular rate for disks](https://azure.microsoft.com/pricing/details/managed-disks/). <br> You can see the cost for attach Premium (SSD based) and Standard (HDD) based disks to your virtual machines on the [Managed Disks pricing page](https://azure.microsoft.com/pricing/details/managed-disks/). |
+| OS Disk and possibly separate disks for data. | It's a best practice to keep your data on a separate disk from your operating system, in case you ever have a VM fail, you can detach the data disk, and attach it to a new VM. | All new virtual machines have an operating system disk and a local disk. <br> Azure doesn't charge for local disk storage. <br> The operating system disk, which is usually 127GiB but is smaller for some images, is charged at the [regular rate for disks](https://azure.microsoft.com/pricing/details/managed-disks/). <br> You can see the cost for attach Premium (SSD based) and Standard (HDD) based disks to your virtual machines on the [Managed Disks pricing page](https://azure.microsoft.com/pricing/details/managed-disks/). |
 | In some cases, a license for the OS | For providing your virtual machine runs to run the OS | The cost varies based on the number of cores on your VM, so [size your VM accordingly](sizes.md). The cost can be reduced through the [Azure Hybrid Benefit](https://azure.microsoft.com/pricing/hybrid-benefit/#overview). |
 
-You can also choose to have Azure can create and store public and private SSH keys - Azure uses the public key in your VM and you use the private key when you access the VM over SSH. Otherwise, you will need a username and password.
+You can also choose to have Azure can create and store public and private SSH keys - Azure uses the public key in your VM and you use the private key when you access the VM over SSH. Otherwise, you need a username and password.
 
 By default, these resources are created in the same resource group as the VM. 
 
 ### Locations
-There are multiple [geographical regions](https://azure.microsoft.com/regions/) around the world where you can create Azure resources. Usually, the region is called **location** when you create a virtual machine. For a virtual machine, the location specifies where the virtual hard disks will be stored.
+There are multiple [geographical regions](https://azure.microsoft.com/regions/) around the world where you can create Azure resources. Usually, the region is called **location** when you create a virtual machine. For a virtual machine, the location specifies where the virtual hard disks are stored.
 
 This table shows some of the ways you can get a list of available locations.
 
@@ -70,7 +70,7 @@ This table shows some of the ways you can get a list of available locations.
 
 ## Availability
 There are multiple options to manage the availability of your virtual machines in Azure. 
-- **[Availability Zones](../availability-zones/az-overview.md)** are physically separated zones within an Azure region. Availability zones guarantee virtual machine connectivity to at least one instance at least 99.99% of the time when you've two or more instances deployed across two or more Availability Zones in the same Azure region. 
+- **[Availability Zones](../availability-zones/az-overview.md)** are physically separated zones within an Azure region. Availability zones guarantee virtual machine connectivity to at least one instance at least 99.99% of the time when you have two or more instances deployed across two or more Availability Zones in the same Azure region. 
 - **[Virtual Machine Scale Sets](../virtual-machine-scale-sets/overview.md)** let you create and manage a group of load balanced virtual machines. The number of virtual machine instances can automatically increase or decrease in response to demand or a defined schedule. Scale sets provide high availability to your applications, and allow you to centrally manage, configure, and update many virtual machines. Virtual machines in a scale set can also be deployed into multiple availability zones, a single availability zone, or regionally.
 
 Fore more information see [Availability options for Azure virtual machines](availability.md) and [SLA for Azure virtual machines](https://azure.microsoft.com/support/legal/sla/virtual-machines/v1_9/). 
@@ -90,7 +90,7 @@ Managed Disks handles Azure Storage account creation and management in the backg
 You can also manage your custom images in one storage account per Azure region, and use them to create hundreds of virtual machines in the same subscription. For more information about Managed Disks, see the [Managed Disks Overview](managed-disks-overview.md).
 
 ## Distributions 
-Microsoft Azure supports a variety of Linux and Windows distributions. You can find available distributions in the [marketplace](https://azuremarketplace.microsoft.com), Azure portal or by querying results using CLI, PowerShell and REST APIs. 
+Microsoft Azure supports various Linux and Windows distributions. You can find available distributions in the [marketplace](https://azuremarketplace.microsoft.com), Azure portal or by querying results using CLI, PowerShell, and REST APIs. 
 
 This table shows some ways that you can find the information for an image.
 
@@ -101,12 +101,12 @@ This table shows some ways that you can find the information for an image.
 | REST APIs |[List image publishers](/rest/api/compute/platformimages/platformimages-list-publishers)<BR>[List image offers](/rest/api/compute/platformimages/platformimages-list-publisher-offers)<BR>[List image skus](/rest/api/compute/platformimages/platformimages-list-publisher-offer-skus) |
 | Azure CLI |[az vm image list-publishers](/cli/azure/vm/image) --location *location*<BR>[az vm image list-offers](/cli/azure/vm/image) --location *location* --publisher *publisherName*<BR>[az vm image list-skus](/cli/azure/vm) --location *location* --publisher *publisherName* --offer *offerName*|
 
-Microsoft works closely with partners to ensure the images available are updated and optimized for an Azure runtime.  For more information on Azure partner offers, see the [Azure Marketplace](https://azuremarketplace.microsoft.com/marketplace/apps?filters=partners%3Bvirtual-machine-images&page=1)
+Microsoft works closely with partners to ensure the images available are updated and optimized for an Azure runtime. For more information on Azure partner offers, see the [Azure Marketplace](https://azuremarketplace.microsoft.com/marketplace/apps?filters=partners%3Bvirtual-machine-images&page=1)
 
 
 ## Cloud-init 
 
-Azure supports for [cloud-init](https://cloud-init.io/) across most Linux distributions that support it.  we're actively working with our Linux partners in order to have cloud-init enabled images available in the Azure Marketplace. These images will make your cloud-init deployments and configurations work seamlessly with virtual machines and virtual machine scale sets.
+Azure supports for [cloud-init](https://cloud-init.io/) across most Linux distributions that support it. We're actively working with our Linux partners to make cloud-init enabled images available in the Azure Marketplace. These images make your cloud-init deployments and configurations work seamlessly with virtual machines and virtual machine scale sets.
 
 For more information, see [Using cloud-init on Azure Linux virtual machines](linux/using-cloud-init.md).
 
@@ -129,9 +129,9 @@ Microsoft provides a Service Level Agreement (SLA) for its services as a commitm
 
 Azure already has many built-in platform features that support highly available applications. For more about these services, read [Disaster recovery and high availability for Azure applications](/azure/architecture/framework/resiliency/backup-and-recovery).
 
-This article covers a true disaster recovery scenario, when a whole region experiences an outage due to major natural disaster or widespread service interruption. These are rare occurrences, but you must prepare for the possibility that there is an outage of an entire region. If an entire region experiences a service disruption, the locally redundant copies of your data would temporarily be unavailable. If you have enabled geo-replication, three additional copies of your Azure Storage blobs and tables are stored in a different region. In the event of a complete regional outage or a disaster in which the primary region isn't recoverable, Azure remaps all of the DNS entries to the geo-replicated region.
+This article covers a true disaster recovery scenario, when a whole region experiences an outage due to major natural disaster or widespread service interruption. These are rare occurrences, but you must prepare for the possibility that there's an outage of an entire region. If an entire region experiences a service disruption, the locally redundant copies of your data would temporarily be unavailable. If you enabled geo-replication, three additional copies of your Azure Storage blobs and tables are stored in a different region. In the event of a complete regional outage or a disaster in which the primary region isn't recoverable, Azure remaps all of the DNS entries to the geo-replicated region.
 
-To help you handle these rare occurrences, we provide the following guidance for Azure virtual machines in the case of a service disruption of the entire region where your Azure virtual machine application is deployed.
+In the case of a service disruption of the entire region where your Azure virtual machine application is deployed, we provide the following guidance for Azure virtual machines.
 
 ### Option 1: Initiate a failover by using Azure Site Recovery
 You can configure Azure Site Recovery for your VMs so that you can recover your application with a single click in matter of minutes. You can replicate to Azure region of your choice and not restricted to paired regions. You can get started by [replicating your virtual machines](../site-recovery/azure-to-azure-quickstart.md). You can [create a recovery plan](../site-recovery/site-recovery-create-recovery-plans.md) so that you can automate the entire failover process for your application. You can [test your failovers](../site-recovery/site-recovery-test-failover-to-azure.md) beforehand without impacting production application or the ongoing replication. In the event of a primary region disruption, you just [initiate a failover](../site-recovery/site-recovery-failover.md) and bring your application in target region.
@@ -140,7 +140,7 @@ You can configure Azure Site Recovery for your VMs so that you can recover your
 ### Option 2: Wait for recovery
 In this case, no action on your part is required. Know that we're working diligently to restore service availability. You can see the current service status on our [Azure Service Health Dashboard](https://azure.microsoft.com/status/).
 
-This is the best option if you have not set up Azure Site Recovery, read-access geo-redundant storage, or geo-redundant storage prior to the disruption. If you have set up geo-redundant storage or read-access geo-redundant storage for the storage account where your VM virtual hard drives (VHDs) are stored, you can look to recover the base image VHD and try to provision a new VM from it. This isn't a preferred option because there are no guarantees of synchronization of data. Consequently, this option isn't guaranteed to work.
+This option is the best if you don't set up Azure Site Recovery, read-access geo-redundant storage, or geo-redundant storage prior to the disruption. If you set up geo-redundant storage or read-access geo-redundant storage for the storage account where your VM virtual hard drives (VHDs) are stored, you can look to recover the base image VHD and try to provision a new VM from it. This option isn't preferred because there are no guarantees of synchronization of data, which means this option isn't guaranteed to work.
 
 
 > [!NOTE]
