Extending Disk Space

Question

Extending Disk Space

Lee Thornton 0

I need to increase the storage space on my Azure SQL Server VM. I currently have a data array with 4 drives-each of which were 8GB. I modified each of them to be 10TB in total but after rebooting the server, it now shows my original F: which the same has not changed on but then it shows 4 other individual basic disks that are each 8GB allocated and 2GB unallocated. All my discs are basic and I am simply trying to extend the disk but none of the methods I have found online are working.

VRISHABHANATH PATIL 2,070 Reputation points Microsoft External Staff Moderator

2025-10-29T02:29:33.8166667+00:00

Hi Lee Thornton,

Thank you for reaching out to Microsoft Q&A. We’ll review your question and get back to you with a solution. Additionally reached via private messages for additional details

Thanks,
Vrishabh
Himanshu Shekhar 1,780 Reputation points Microsoft External Staff Moderator

2025-10-29T06:56:53.6966667+00:00
Hello Lee Thornton

Thank you for reaching Microsoft Q&A please assist in queries below :

How was the storage configured initially on the Azure SQL VM? Are you using a Storage Spaces pool, simple volumes, or striped/mirrored disks?

When you resized the disks in Azure Portal, did you also verify the partition style (MBR vs GPT) and disk status inside the VM’s Disk Management?

Are all the disks currently part of a storage pool or virtual disk in Windows Storage Spaces, or are they individual basic disks that need manual extension?

What steps have you already tried inside the VM to extend the volumes? For example, have you attempted "Extend Volume" from Disk Management or used PowerShell storage commands?
Himanshu Shekhar 1,780 Reputation points Microsoft External Staff Moderator

2025-10-31T06:46:40.0033333+00:00

@Lee Thornton

Could you please provide an update on this post?

Kindly let us know if the suggested steps helps or you need further assistance on this issue.

1 answer

Your answer

VRISHABHANATH PATIL 2,070 Reputation points Microsoft External Staff Moderator

2025-10-29T02:29:33.8166667+00:00

Hi Lee Thornton,

Thank you for reaching out to Microsoft Q&A. We’ll review your question and get back to you with a solution. Additionally reached via private messages for additional details

Thanks,
Vrishabh
Himanshu Shekhar 1,780 Reputation points Microsoft External Staff Moderator

2025-10-29T06:56:53.6966667+00:00

Hello Lee Thornton

Thank you for reaching Microsoft Q&A please assist in queries below :

How was the storage configured initially on the Azure SQL VM? Are you using a Storage Spaces pool, simple volumes, or striped/mirrored disks?

When you resized the disks in Azure Portal, did you also verify the partition style (MBR vs GPT) and disk status inside the VM’s Disk Management?

Are all the disks currently part of a storage pool or virtual disk in Windows Storage Spaces, or are they individual basic disks that need manual extension?

What steps have you already tried inside the VM to extend the volumes? For example, have you attempted "Extend Volume" from Disk Management or used PowerShell storage commands?
Himanshu Shekhar 1,780 Reputation points Microsoft External Staff Moderator

2025-10-31T06:46:40.0033333+00:00

@Lee Thornton

Could you please provide an update on this post?

Kindly let us know if the suggested steps helps or you need further assistance on this issue.

Answer 1

@Lee Thornton - Based on the issue we can suggest the details below please refer and let us know if it helps here.

please confirm in the Azure portal that each managed disk attached to the VM shows the new size (e.g., if you have set a total of 10TB across disks the portal should reflect this per disk)

If possible, stop (deallocate) the VM completely in the Azure portal and then start it again. This ensures disk size changes propagate to the VM OS. (If it's prod server please consider doing in off hours)

Log in to the VM via RDP.

Open Disk Management (diskmgmt.msc).
Check the status and capacity of each disk.
You should see the expanded disk size reflected as unallocated space outside the current partitions.

Right-click on the volume(s) (e.g., F: drive) you want to expand. Select "Extend Volume" to allocate the unallocated space and If disks are part of a storage pool or striped volume, extending may require adding additional disks or using the Storage Pools management console.

Additionally, please refer the Microsoft documentation for details:

Configure storage for SQL Server on Azure VMs : https://learn.microsoft.com/en-us/azure/azure-sql/virtual-machines/windows/storage-configuration?view=azuresql&tabs=windows2016

For Expanding virtual hard disks attached to a Windows virtual machine: https://learn.microsoft.com/en-us/azure/virtual-machines/windows/expand-disks

Performance best practices for SQL Server on Azure VMs : https://learn.microsoft.com/en-us/azure/azure-sql/virtual-machines/windows/performance-guidelines-best-practices-storage?view=azuresql

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Extending Disk Space

1 answer

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