An IT department deploys an Azure Virtual Machine (VM) to run testing workloads during business hours. To reduce spending, an administrator stops and deallocates the virtual machine every evening and over the weekend. Which component of the virtual machine infrastructure will continue to incur billing charges while the virtual machine is in a stopped (deallocated) state?

The attached OS and data managed disks: ### What Managed Disks Are **Azure Managed Disks** are block-level storage volumes managed by Microsoft Azure and used with **Azure Virtual Machines**. They function like physical hard drives in on-premises servers and store the **operating system (OS)**, custom applications, and workload data. ### How It Meets the Scenario Requirements When an Azure Virtual Machine is transitioned to the **stopped (deallocated)** state, Azure releases the physical hardware resources such as **vCPUs** and **system memory (RAM)**, stopping all compute billing meters. However, the data stored on the virtual machine must be preserved for when the VM is started again. Therefore, the **managed storage disks** remain allocated in Azure storage infrastructure and continue to accrue standard storage capacity charges. ### Key Advantages and Billing Characteristics - **Data persistence**: Preserves the file system, installed applications, and database state regardless of VM operational status. - **Independent billing lifecycle**: Disks are billed based on provisioned disk tier and storage size rather than VM execution status. - **Predictable disk performance**: Provides defined IOPS and throughput performance tiers (such as Standard HDD, Standard SSD, and Premium SSD). - **High durability and availability**: Replicates data across storage clusters to protect against local hardware failures. ### Why This Is the Correct Factor Understanding the separation between **compute costs** and **storage costs** is fundamental in Azure cloud architecture. While stopping and deallocating a virtual machine pauses compute hourly consumption rates, non-compute resources such as **persistent managed disks** continuously incur monthly storage fees until explicitly deleted.