Workloads using legacy Premium SSD managed disks may be eligible for migration to Premium SSD v2, which delivers equivalent or improved performance characteristics at a lower cost. Premium SSD v2 decouples disk size from performance metrics like IOPS and throughput, enabling more granular cost optimization. Additionally, Premium SSD disks are often overprovisioned in size—for example, a P40 disk with more IOPS and capacity than the workload requires—resulting in inflated storage costs. Rightsizing includes both transitioning to v2 and resizing to smaller SKUs (e.g., P40 → P20) based on observed utilization. Failure to address either form of overprovisioning leads to persistent waste.
Azure Premium SSD disks are billed per provisioned GB per month, with costs based on the selected disk size and tier. Premium SSD v2 offers greater flexibility in performance configuration and lower pricing compared to the original Premium SSD offering, allowing users to optimize both cost and performance.
Transition eligible Premium SSD disks to Premium SSD v2 to achieve improved cost efficiency and flexible performance configuration. Where appropriate, resize oversized disks to smaller SKUs that better match actual usage. Migration and resizing can typically be performed without downtime using snapshots or disk export/import processes. Monitor performance metrics after migration to ensure service quality is maintained. Update infrastructure provisioning templates to adopt Premium SSD v2 and rightsized configurations by default where applicable.
