Azure-disk based storage

• Zone-redundant storage (ZRS) synchronously replicates an Azure managed disk across three Azure availability zones in the regions selected. This can be selected by setting skuname: Premium_ZRS in the yaml file for creating the storage class.

• ZRS disks are currently available in: Southeast Asia, Australia East, Brazil South, North Europe, West Europe, France Central, Japan East, Korea Central, Qatar Central, UK South, East US, East US 2, South Central US and West US 2.

• The following yaml file can be used:

  aks-disk
  kind: StorageClass
  apiVersion: storage.k8s.io/v1
  metadata:
    name: <storage class name>
  provisioner: disk.csi.azure.com
  reclaimPolicy: Retain
  allowVolumeExpansion: True
  volumeBindingMode: Immediate
  parameters:
    skuname: Premium_ZRS

EKS disk-based storage (EBS)

• Zone redundancy not supported. The snapshot backup to store backup at different S3 bucket can be used.

• Refer to the following document to take volume snapshot and restore it to the existing pod:

  Using Amazon EBS snapshots for persistent storage with your Amazon EKS cluster by leveraging add-ons

Azure file-based storage

• Zone-redundant storage (ZRS) replicates the storage account synchronously across three Azure availability zones in the primary region. This can be selected by setting skuname: Premium_ZRS in the yaml file for creating the storage class.

• ZRS for premium file shares is available in: Southeast Asia, Australia East, Brazil South, North Europe, West Europe, France Central, Japan East, Korea Central, Qatar Central, UK South, East US, East US 2, South Central US and West US 2.

• The following yaml file can be used:

  aks-file
  kind: StorageClass
  apiVersion: storage.k8s.io/v1
  metadata:
    name: <name of storage class>
  provisioner: file.csi.azure.com
  reclaimPolicy: Retain
  allowVolumeExpansion: True
  volumeBindingMode: Immediate
  parameters:
    skuName: Premium_ZRS
    protocol: nfs

EKS file-based storage (EFS)

• Zone redundancy is automatically supported within the region.

  For more information, see Resilience in Amazon Elastic File System.