Creating Premium SSD v2 Disks

Premium SSD v2 disks launched in October 2022 can be used with FlashGrid Cluster deployments. This article provides necessary steps to create new disks and additional details regarding their usage.

Creating and attaching Premium SSD v2

Create and attach disks using the Azure CLI (Azure CLI version should be 2.38.0 or later, use az --version to check). It is not recommended to use Azure Portal GUI for creating v2 disks.

• Create a new disk (the sector size must be set to 512 as in the command below):

  az disk create --sku PremiumV2_LRS \
             --encryption-type EncryptionAtRestWithPlatformKey \
             --os-type Linux \
             --logical-sector-size 512 \
             --resource-group <resource_group> \
             --name <disk_name, e.g. disks_rac1_lun10> \
             --disk-iops-read-write <disk_iops, e.g. 16000> \
             --disk-mbps-read-write <disk_mbps, e.g. 1200> \
             --size-gb <size_gb, e.g. 1000> \
             --location <location, e.g. eastus> \
             --zone <zone, e.g. 1>

  See Premium SSD v2 performance for details on setting size, IOPS, MBPS.

• Attach the disk:

  az vm disk attach --caching None \
                --resource-group <resource_group> \
                --vm-name <vm_name, e.g. rac1> \
                --disks <disk_name, e.g. disks_rac1_lun10> \
                --lun <lun_number, e.g. 10>

Usage notes

• Premium SSD v1 and v2 should not be combined in the same disk group, except temporarily when doing migration from v1 to v2.
• IOPS and MBPS settings must be the same for all disks in the same diskgroup.

Limitations

• Currently, Premium SSD v2 disks cannot be attached to VMs in Availability Sets.
• Available only in some regions.