Hello, @Police Suresh Kumar Reddy !
Is there any option to change IO bursting at the VM level in Azure?
Boosting disk storage IOPS and MB/s performance is referred to as bursting for both virtual machines (VM) and disks. Virtual machine-level bursting uses only the credit-based model:
https://learn.microsoft.com/en-us/azure/virtual-machines/disk-bursting#virtual-machine-level-bursting
The bursting credit system applies in the same manner at both the VM level and disk level. Your resource, either a VM or disk, will start with fully stocked credits in its own burst bucket. These credits allow you to burst for up to 30 minutes at the maximum burst rate. You accumulate credits whenever the resource's IOPS or MB/s are being utilized below the resource's performance target. If your resource has accrued bursting credits and your workload needs the extra performance, your resource can use those credits to go above its performance limits and increase its performance to meet the workload demands.
How you spend your available credits is up to you. You can use your 30 minutes of burst credits consecutively or sporadically throughout the day. When resources are deployed they come with a full allocation of credits. When those deplete, it takes less than a day to restock. Credits can be spent at your discretion, the burst bucket does not need to be full in order for resources to burst.
I hope this helps! Let me know if you have additional questions.