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Add tips for incremental snapshot #228

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Feb 1, 2024
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Add tips for incremental snapshot #228

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10 changes: 10 additions & 0 deletions README.md
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Expand Up @@ -588,6 +588,15 @@ To use this new Backup Storage Location when performing a backup, use the flag `
To improve security within Azure, it's good practice [to disable public traffic to your Azure Storage Account][26]. If your AKS cluster is in the same Azure Region as your storage account, access to your Azure Storage Account should be easily enabled by a [Virtual Network endpoint][27] on your VNet.
## Tips
We recommend taking incremental snapshots of Azure Disks since they are more cost efficient and come with the following benefits (Read more: [Azure Docs][30]):
> Incremental snapshots are point-in-time backups for managed disks that, when taken, consist only of the changes since the last snapshot. The first incremental snapshot is a full copy of the disk. The subsequent incremental snapshots occupy only delta changes to disks since the last snapshot. When you restore a disk from an incremental snapshot, the system reconstructs the full disk that represents the point in time backup of the disk when the incremental snapshot was taken.
> If ZRS is available in the selected region, an incremental snapshot will use ZRS automatically. If ZRS isn't available in the region, then the snapshot will default to locally-redundant storage (LRS)
**To enable Incremental snapshots, set `incremental` to `true` as part of `--snapshot-location-config`. Refer [additional configurable parameters][8] for the `--snapshot-location-config` flag.**
[1]: #Create-Azure-storage-account-and-blob-container
[2]: #Set-permissions-for-Velero
[3]: #Install-and-start-Velero
Expand All @@ -613,6 +622,7 @@ To improve security within Azure, it's good practice [to disable public traffic
[27]: https://docs.microsoft.com/en-us/azure/virtual-network/virtual-network-service-endpoints-overview
[28]: https://azure.github.io/azure-workload-identity/docs/installation/mutating-admission-webhook.html
[29]: https://learn.microsoft.com/en-us/azure/aks/use-oidc-issuer#create-an-aks-cluster-with-oidc-issuer
[30]: https://learn.microsoft.com/en-us/azure/virtual-machines/disks-incremental-snapshots
[101]: https://github.com/vmware-tanzu/velero-plugin-for-microsoft-azure/workflows/Main%20CI/badge.svg
[102]: https://github.com/vmware-tanzu/velero-plugin-for-microsoft-azure/actions?query=workflow%3A"Main+CI"
[103]: https://github.com/vmware-tanzu/velero/issues/new/choose
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