
In the upcoming weeks we will be posting new videos to the SAP HANA Academy to show new features and functionality introduced with SAP HANA Support Package Stack (SPS) 12.
The topic of this blog is high availability and disaster recovery.
For the complete list of blogs see: What's New with SAP HANA SPS 12 - by the SAP HANA Academy
For the SPS 11 version, see SAP HANA SPS 11 What's New: HA/DR - by the SAP HANA Academy
SAP HANA Academy - SAP HANA SPS 12: What's New? - High Availability and Disaster Recovery - YouTube
The System Replication tile in the SAP HANA cockpit now displays the operation mode, together with replication mode, tiers and status.
The overview page of the System Replication app displays (configurable) information for both primary and secondary sites, a performance graph with network statistics and a tile for Alerts, that links back to the Alerts app in the SAP HANA cockpit. From the status bar, the Log File Viewer can be opened.
The System Replication Details view displays information on the operation mode, the replayed log position, as well as the replayed log position time.
In a system replication scenario, the SAP HANA Cockpit for Offline Administration can be used to perform a takeover from the primary side by the secondary site.
A new alert (#94 - Log replay backlog for system replication secondary) is raised when the system replication log replay backlog is increased. Thresholds and schedule are configurable.
The configuration parameter checker reports on any differences between primary, secondary, and - new for SPS 12 - tier-3 secondary systems. Also new with SPS 12 is that you can now replicate the system (or .ini file) parameters based on alerts. The parameter replication can be enabled to all sites.
[inifile_checker]
enable = true
replicate = true
Apart from using a full data backup, it is now possible to initialize the secondary system using a binary storage copy, that is, either a snapshot or a full offline database copy.
The Alerts app of the SAP HANA cockpit now also displays alerts issued by secondary system hosts.
In a multitier system replication scenario, support for ASYNC replication has been extended with both SYNCMEM and SYNC. In other words, all replication modes are supported for all sites.
For more information see:
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.
Connect with us on http://linkedin.com/in/saphanaacademy.
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