---
name: db2wh-saas-ha
title: High availability (HA)
description: The measure of a successful database solution is its availability. The architecture of IBM® Db2® Warehouse as a Service features multiple tiers of reliability, which allows for fast, automated recovery from any issues that the data warehouse might encounter.
last-updated: 2025-09-25
---

> ## Documentation Index
> The table of contents for this documentation set is at https://cloud.ibm.com/docs/db2wh-saas?format=markdown
> The index for all IBM Cloud docs is at: https://cloud.ibm.com/docs/llms.txt
> Use these files to discover more information as needed.

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# High availability (HA) 
{: #ha}

The measure of a successful database solution is its availability. The architecture of IBM® Db2® Warehouse as a Service features multiple tiers of reliability, which allows for fast, automated recovery from any issues that the data warehouse might encounter.
{: shortdesc}




### Compute HA
{: #compute_ha}

Any node failure is immediately detected by the cloud provider's container service. The containers and pods that were running in the failed node are scheduled to a new node automatically by the HA process. The system is back to 100% normal operation after a short downtime.

### Storage HA
{: #storage_ha}

IBM Db2 Warehouse SaaS uses highly-reliable block storage, designed to provide consistent performance and protect data integrity and availability through maintenance events and unplanned failures. Storage is provisioned and managed independently of compute.

### Network HA
{: #net_ha}

Network connections are made highly available by provisioning your service with a redundant network interface card (NIC). 

If the container service detects a network issue, pods and containers can automatically restart after a short downtime.