# Business Continuity & Disaster Recovery

## Overview

This section contains pointers to get started with different solutions for creating backups and recovering from an unforeseen data loss.

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In production, you should be using an orchestrator like Docker Swarm, Kubernetes, or Kubernetes in Azure Kubernetes Service.
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## WorkflowGen files

### SMB file shares

You should have at least three different storage shares to handle WorkflowGen persistent files. If you used custom SMB file shares, you should have a strategy to back up the disks for the file share. If a problem occurs, you can restore a backup. Don't forget to restore the database data to the exact time as the file share backup.

### Azure Files

For Azure Files, see the following documentation on backups and restorations:

* [Back up Azure file shares](https://docs.microsoft.com/en-us/azure/backup/backup-azure-files)
* [Azure storage disaster recovery planning and failover](https://learn.microsoft.com/en-us/azure/storage/common/storage-disaster-recovery-guidance?toc=%2Fazure%2Fstorage%2Ffiles%2Ftoc.json)

### Azure Disks

For Azure Disks, see the following documentation on backups and restorations:

* [Backup and disaster recovery for Azure managed disks](https://learn.microsoft.com/en-us/azure/virtual-machines/backup-and-disaster-recovery-for-azure-iaas-disks)

## Database

### On-premise database

See the [Operations](https://docs.advantys.com/docs/tech/operations) section in the [WorkflowGen Technical Guide](https://docs.advantys.com/docs/tech/) for information on backup and restoration of on-premise databases.

### Azure SQL

See the following Microsoft documentation about business continuity for Azure SQL:

* [Overview of business continuity with Azure SQL Database](https://docs.microsoft.com/en-us/azure/sql-database/sql-database-business-continuity)

## Kubernetes

Creating backups and recovering with them in Kubernetes can be complicated, but tools exist to help manage this. Here's an article about backups with Kubernetes:

* [Kubernetes: Backups and recovery](https://medium.com/@pmvk/kubernetes-backups-and-recovery-efc33180e89d)

There are two main tools for backup and recovery: 

* [Velero](https://velero.io/)
* [kube-backup](https://github.com/pieterlange/kube-backup)

## Azure Kubernetes Service

As with other Azure Services, Microsoft provides guides for backups and restorations:

* [Best practices for business continuity and disaster recovery in Azure Kubernetes Service (AKS)](https://docs.microsoft.com/en-us/azure/aks/operator-best-practices-multi-region)