<p>I have AKS cluster and I would like to check a node disk type. I know there  are 4 types of disk at the moment: standard HDD, standard SSD, premium SSD and ultra SSD (in preview). The node itself is set up to be <code>Standard_DS2_v2</code> (via terraform) but there is no option (or I dont see it) for setting up certain disk type. How can I check disk type on Kubernetes node(s)?</p>

sobi3ch
<p>Terraform, just like the Azure portal and <code>az aks create</code>, only allows you to select a predefined VM size.</p>

<p><a href="https://learn.microsoft.com/en-us/azure/virtual-machines/windows/sizes-general#dsv2-series" rel="noreferrer">Standard_DS2_v2</a> has "Premium SSD". All AKS nodes use SSD storage, in the provided link the ones with "Premium SSD" are listed as "Premium Storage: Supported".</p>

<p>Alternatively in the Azure Portal, create a new AKS resource (no need to really create it, just open the wizard), then in the first step, click the link "Change size" next to "Node size" and you'll get a list of available VM sizes with a column "Premium Disk Supported".</p>

<p>On an existing cluster, if you are using VMSS, you can also check the storage tier in the portal under the VMSS "Storage" tab, or by issuing <code>az vmss list</code> (storageProfile.osDisk.managedDisk.storageAccountType). Otherwise simply check the disk type in the virtual machine nodes AKS creates.</p>
