Hi @Bhushan Gawale , adding on top of the information provided by @Navtej Singh Saini , below PowerShell command can be run to update the sku capacity:
Update-AzMariaDbServer -Name xyz -ResourceGroupName abc -Sku GP_Gen5_32
Please notice that here we are not changing the tier but increasing the vCores to 32. The last numeric part will represent the change. Few example below:
1). Changing from general purpose 4 vCores to general purpose 16 vCores:
Update-AzMariaDbServer -Name xyz -ResourceGroupName abc -Sku GP_Gen5_16
2). Changing from general purpose 4 vCores to memory optimized 2 vCores:
Update-AzMariaDbServer -Name xyz -ResourceGroupName abc -Sku MO_Gen5_2
Please note that changing to and from the Basic compute tier or changing the backup redundancy options after server creation is not supported.
Please let us know if this helps or we can discuss further on the issue.