SAP HANA System Replication videos now available on the SAP HANA Academy
Introduction
SAP HANA is fully designed for high availability as explained by Chaim Bendelac in his paper: Introduction to High Availability for SAP HANA.
System replication is a key technology in this design as it supports both disaster recovery, e.g. data center or site failure, and fault recovery, e.g. hardware failure.
We have just completed a series of video tutorials for the SAP HANA Academy that cover a wide range of topics related to system replication. You can find the full playlist here: SAP HANA System Replication – YouTube
This completes the product documentation and some excellent resources, like the System Replication How To Guide by Mechthild Bore-Wuesthof.
Concepts
The first video briefly discusses system replication concepts, RPO, RTO, etc.
Setup Replication
The next video demonstrates how to setup replication using SAP HANA studio or the command line tool HDBNSUTIL.
Full Sync
The next video explains the different replication modes and the full synch option.
Configuration Parameters
In the next video, the different configuration parameters are discussed.
Disable Replication
The next video, demonstrates how to properly disable system replication.
As discussed in SAP Note 1945676 – Correct usage of hdbnsutil -sr_unregister this needs to be done in the correct sequence.
Takeover
The next video, demonstrates how to perform a takeover.
For a decision guideline, see SAP Note: 2063657 – HANA System Replication takeover decision guideline
and SCN blogs: HANA System Replication – Take-over process; HANA System Replication – Switching back and forth
Near Zero Downtime Upgrade
The next demonstrates how you can use system replication for near zero downtime upgrades. I will show you how you can upgrade your secondary system from revision 90 (SPS 09) to revision 91, perform a takeover to the secondary, upgrade old primary, and reestablish the replication. Although not complicated, near zero downtime upgrades does require to perform the steps in the right order and using the correct command options.
1984882 – Using HANA System Replication for Hardware Exchange with minimum/zero Downtime
More Information
Product documentation
How to setup and manage system replication is documented in the SAP HANA Administration Guide (Chapter 4, Availability and Scalability)
SCN Blogs
How to Perform System Replication for SAP HANA
How To Configure Network Settings for HANA System Replication
Network Recommendations for SAP HANA System Replication
SAP HANA TDI – Network Requirements
HANA System Replication – Switching back and forth
Registering a Secondary system for System Replication – Troubleshooting
SAP Notes
1945676 – Correct usage of hdbnsutil -sr_unregister
1984882 – Using HANA System Replication for Hardware Exchange with minimum/zero Downtime
1999880 – FAQ: SAP HANA System Replication
2063657 – HANA System Replication takeover decision guideline
1984882 – Using HANA System Replication for Hardware Exchange with minimum/zero Downtime
Thank you for watching
You can view more free online videos and hands-on use cases to help you answer the What, How and Why questions about SAP HANA and the SAP HANA Cloud Platform on the SAP HANA Academy at youtube.com/saphanaacademy, follow us on Twitter @saphanaacademy., or connect with us on LinkedIn.