how cost will be calculated for disk customer size increase

Question

how cost will be calculated for disk customer size increase

like we have p40 with 2tb storage and want to increase size by 100 gb how we are going to charges. Azure calculator doesn't help with custom disk.

Answer 1

Thanks for posting your question in the Microsoft Q&A forum.

If you’re increasing the size from 2TB to 2.1TB (which is 100GB more), you’ll be charged for the next available size.

https://learn.microsoft.com/en-us/answers/questions/499150/calculating-cost-for-additional-custom-sized-disk

** Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful **

Answer 2

Hello nitish

Welcome to the Microsoft Q&A and thank you for posting your questions here.

Sequel to your questions, I understand that you have p40 with 2TB storage and want to increase size by 100GB how we are going to charges.

To answer your question. In Azure, the pricing for increasing the size of a disk is generally based on the provisioned disk size rather than incremental changes.

So in some cases, when it comes to Azure managed disks, understanding the cost implications of size increases is crucial. To explain more into the details here:

1. Azure Disk Type: Azure managed disks come in various types, including:

• Ultra disks
• Premium solid-state drives (SSD)
• Standard SSDs
• Standard hard disk drives (HDD)

Each type has different performance characteristics and cost structures.

Now with your scenario having p40 with 2TB storage and want to increase size by 100GB.

1. P40 Disk Size: The P40 disk size in Azure is 2 terabytes (TB). It's a high-performance, durable block storage option designed to be used with Azure Virtual Machines.
2. Increasing Size by 100 GB: To increase the size of your P40 disk by 100 gigabytes (GB), you can follow these steps:

• Resize the Disk: First, resize your existing P40 disk to the desired size. In this case, you want to add 100 GB, so the new size would be 2.1 TB.
• Azure Portal or CLI: You can use the Azure Portal or the Azure CLI to perform the resize operation. This is an example using the Azure CLI:

 az disk update --resource-group <your-resource-group> --name <your-disk-name> --size-gb 2100

• Restart VM (if necessary): After resizing the disk, you might need to restart your virtual machine for the changes to take effect.

3. Cost Implications: Keep in mind that the cost of the P40 disk will increase based on the new size. Azure Managed Disks are billed on an hourly basis, and the pricing depends on the specific disk size, type and region. In your case, the cost for the initial 2TB storage will depend on the type of disk you choose (Premium SSD, Standard SSD, or Standard HDD).

Cost Calculation Example:

Example of what you are currently spending per month.

• Suppose you increase the size of your disk:
  • Disk 1: Original size = 64 GB (P40)
  • Disk 2: Original size = 256 GB, increased to 4,000 GB (2TB)
  • Disk 3: Original size = 1,024 GB, increased to 15,000 GB
• Monthly costs (approximate):
  • Disk 1: $5.14
  • Disk 2: $25.67
  • Disk 3: $186.71

Now, to find the cost of 100GB based on the given pricing of 15,000GB for $186.71, you can use a proportion:

Let's denote the cost of 100GB as x.

Using the proportion:

186.71/15000 = x/100​

Cross multiply:

186.71×100 =15000×x

18671=15000x

Now, solve for x:

x=18671​/15000

x ≈ $1.245 dollars

So, the cost of 100GB would be approximately $1.245. This is an example on how to calculate storage cost, forget not that a lot of factors will add or subtract the amount.

If you add snapshot and two share disks, you might not be spending more than the below:

Make sure to check the current pricing details to estimate the cost accurately. Remember to adjust your VM configuration to utilize the increased disk space effectively. The cost will not be that significant much.

I hope this is helpful! Do not hesitate to let me know if you have any other questions.

Please remember to "Accept Answer" if answer helped, so that others in the community facing similar issues can easily find the solution.

Best Regards,

Sina Salam

Answer 3

@nitish Adding more information to the above response!

When you increase the size of a disk in Azure, you will be charged for the additional storage capacity that you have added. The cost of the additional storage will depend on the type of disk you are using and the region where the disk is located.

For example, if you have a P40 disk with 2TB storage and you want to increase the size by 100GB, you will be charged for the additional 100GB of storage. The cost of the additional storage will depend on the region where the disk is located and the pricing tier of the disk.

You can find the pricing information for Azure disks on the Azure website. If you are unable to find the pricing information for your specific disk configuration, you can contact Azure support for assistance.
Billing and Subscription team would be the best to provide more insight and guidance on this scenario: https://azure.microsoft.com/en-us/support/options/ it's free, and it's the best choice for your scenario, it provides detailed information based on your requirement & based region.

The cost of an Azure disk is determined by several factors, including the disk size and the type of disk (Standard, Premium, or Ultra). For Ultra disks, pricing also depends on the selected IOPS (Input/Output Operations Per Second) and throughput. Generally, the larger the disk size and the higher the IOPS and throughput, the higher the cost will be.

When you increase the size of a disk, such as from a P40 with 2TB storage to an additional 100GB, the cost is calculated based on the total provisioned size after the increase. The Azure Billing API considers various factors such as the operating system, software assurance, reserved instances, VM uptime, location, and currency settings to calculate the monthly compute cost.

For storage, the monthly cost for a server is calculated by aggregating the monthly cost of all disks attached to the server. The cost for Standard or Premium disks is based on the selected or recommended disk size. For Ultra disks, the cost is calculated based on the provisioned size, provisioned IOPS, and provisioned throughput. The total monthly storage costs are then aggregated across all servers.

For custom disk size increases that are not covered by the Azure calculator, you may need to manually calculate the cost based on the pricing of the next available disk size that accommodates your needs or contact Azure support for a more precise estimate.

For more detailed information on Azure disk pricing, you can refer to the following Azure documentation:

• Azure premium storage: Design for high performance
• Assessment overview (migrate to Azure VMs)
• Understand Azure Disk Storage billing

Please let us know if you have any further queries. I’m happy to assist you further.    

---

Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.