Azure Disks
- Azure used to support disks as part of storage account and are called as page blobs. In Azure Max IOPS is given to storage account.
- Azure has launched Azure Disks
- In Azure number of Disks is depending on VM size and almost every vm gets a local storage.
- In Azure data disk size can be increased while vm is running where as os disk size resize requires the vm to be stopped, resized and then started.
- In the regions where zones are enabled, the vm and disk should be in the same zone.
- Azure Disk types
- Ultra Disks
- Premium
- Standard SSD
- Standard HDD
- OS Disk cannot be ultra. datadisks can be ultra disks
- Comparision
- Decision tree

Snapshot
- Individual disk snapshots can be created in full or incremental model
- To copy snapshots to other region use copy snapshot
- Azure give
- Backup vaults: Backup
- Recovery Service Valults: Failover/disaster recovery
