Backup Policy Instant Restore Snapshot is retained in Premium stoage
Provide an option to customer on whether this Instant Restore snapshot should be kept in Premium or standard disk, similar to Retain instant Recovery Snapshots for (2-4) days. so its transparent and customer selection if a snapshot should be kept in premium disk or standard disk.
Instant Recovery Snapshot of Azure VM with premium disk is retained in premium storage and charged back to customer as premium disk. When verified cost of this Instant Recovery Snapshot is 3 times more than actual VM premium disk cost. When checked with support due to high Disk IO this snapshot cost is higher than the Premium Disk cost.
keeping snapshot in Premium storage for instance recovery of premium disk is definitely a waste of resources.