# Document history
<a name="hana-ops-doc-history"></a>


**​**  

| Date | Change | 
| --- | --- | 
| September 2022 | High availability and disaster recovery for SAP HANA | 
| July 2022 | Architecture patterns for SAP HANA | 
| December 2021 | r6i instances updated on storage configuration for SAP HANA | 
| July 2021 | Storage configuration for SAP HANA | 
| December 2017 | Initial publication |