About Disks and Images in Azure
Updated: July 14, 2014
All virtual machines in Azure are configured with at least two disks when you create the virtual machine – one is an operating system disk and the other is a temporary local disk, sometimes called a resource disk. The operating system disk is created from an image, and both the operating system disk and the image are actually virtual hard disks (VHDs) stored in an Azure storage account. Virtual machines also can have data disks, and those are also stored at VHDs.
|Don’t store data on the temporary disk. This disk provides temporary storage for applications and processes and is intended to only store transient data such as page or swap files. To remap this disk for a Windows VM, see Change the drive letter of the Windows temporary disk.|
For details about each of these items, see the following: