Resize an Azure Elastic SAN

This article covers increasing or decreasing the size of an Elastic storage area network (SAN) and an individual volume.

Resize your SAN

To increase the size of your volumes, increase the size of your Elastic SAN first. To decrease the size of your SAN, make sure your volumes aren't using the extra size, or decrease the size of your volumes first.

PowerShell

# You can either update the base size or the additional size.
# This command updates the base size, to update the additional size, replace -BaseSizeTiB $newBaseSizeTib with -ExtendedCapacitySizeTib $newExtendedSizeTib

Update-AzElasticSan -ResourceGroupName $resourceGroupName -Name $sanName -BaseSizeTib $newBaseSizeTib

Azure CLI

# You can either update the base size or the additional size.
# This command updates the base size, to update the additional size, replace -base-size-tib $newBaseSizeTib with -extended-capacity-size-tib $newExtendedCapacitySizeTib

az elastic-san update -e $sanName -g $resourceGroupName --base-size-tib $newBaseSizeTib

Resize a volume

Once you've expanded the size of your SAN, you can either create an additional volume, or expand the size of an existing volume. To decrease the size of your SAN, make sure the extra size is unallocated, or decrease the size of your existing volumes first.

PowerShell

Update-AzElasticSanVolume -ResourceGroupName $resourceGroupName -ElasticSanName $sanName -VolumeGroupName $volumeGroupName -Name $volumeName -sizeGib $newVolumeSize

Azure CLI

az elastic-san volume update -e $sanName -g $resourceGroupName -v $volumeGroupName -n $volumeName --size-gib $newVolumeSize

Next steps

If you expanded the size of your san, see Create volumes to create a new volume with the extra capacity.