This includes the OS disk and any other data disks that are attached.Ĭustom images are often used as gold images because once you have a generalized custom image, you can then deploy as many VMs as you need right from that single custom image. When you capture an image of an Azure virtual machine, the image will contain all managed disks that are associated with the VM. Custom images can be created from VHDs that reside in a storage account and from generalized virtual machines. In addition to supporting snapshots, managed disks also support the creation of custom images. You can even use snapshots to create new managed disks that you can attach to other virtual machines. By taking a snapshot of the OS disk of a VM prior to making changes, you can ensure you have an easy way to roll back your changes. A snapshot is a good way to backup your managed disk prior to performing any kind of patching or upgrade on your virtual machine. This crash-consistent copy is then stored as a standard managed disk. When you take a managed disk snapshot, what you get is a crash-consistent copy of that disk. In this lesson, we're going to take a look at disk snapshots, custom images, and the differences between the two. Hello and welcome to Snapshots and Images. To get the most out of this course, you should have some basic knowledge of working with Azure. This course is intended for those who wish to learn about disks, snapshots, and images in Microsoft Azure.
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