High availability and disaster recovery of SAP HANA on Azure (Large Instances) | Microsoft DocsThis guide is not intended to replace the standard SAP documentation. The following tables describe SAP and Google Cloud features that are used to provide high availability. Compute Engine monitors the state of the underlying infrastructure and automatically migrates your instance away from an infrastructure maintenance event. No user intervention is required. Compute Engine keeps your instance running during the migration if possible. In the case of major outages, there might be a slight delay between when the instance goes down and when it is available. The NFS volume is inaccessible for up to a few seconds in the event of the master host's live migration.
[1.0 SPS 12] SAP HANA What's New? High Availability - SAP HANA Academy
Solution Brief: SAN and SANless Clusters for SAP
Contact SIOS. SUSE Storage. These resources cannot be used in the active system. High Availability is a set of techniques, and design principles for business continuity.Summary 4 5 Big Data What! The role of the dosaster slave host remains inactive; the system is only partially available. This data is replicated to all other name servers, called slave name servers. This accomplishes two goals: directing different users to different hosts load balancing and avoiding the network overhead related to frequent data joins across hosts.
In the event of a failure that justifies full system takeover, actively exploited? X True X False 6. Scale-up means increasing the size of one physical avxilability by increasing the amount of RAM available for processing. Incident response we're down, an administrator instructs the secondary system to switch from recovery mode to full operation.
SAP HANA Systems Replication for high availability and disaster recovery scenarios. system administrator does not need to perform any manual actions.
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Collateral's for Data Protection
Afterwards, the new tenant database starts running as a fully separate. Another advantage of storage replication is that it also enables a much shorter recovery time. In both cases, then add it using the Settings options, the initial data shipping is started automatically for this tenant database. If there is no column Remove Status .
Reconfigure running standby services to load their newly assigned volume. Installation Guide. As of SPS08, this can be achieved with an appropriate table placement configuration. In such a case, the parameter checker generates an alert.
All rights reserved. Public 2. Public 5. Public 7. Public 8. Public Start the secondary site 2.
Any subsequent negative return value will reset the sync state as it is no longer ensured that the replicated data is current. Afterwards, the initial data shipping is started automatically for this tenant database. Stop the primary system. Public 2. It's not possible to choose an Azure region as asp DR region that is in a different geopolitical area!
It's expected that the reader has a solid understanding of and expertise in SAP HANA administration and operations, especially with the topics of backup, restore, high availability, and disaster recovery. It's important that you exercise steps and processes taken in your environment and with your HANA versions and releases. Some processes described in this documentation are simplified for a better general understanding and are not meant to be used as detailed steps for eventual operation handbooks. If you want to create operation handbooks for your configurations, you need to test and exercise your processes and document the processes related to your specific configurations. It's important to work with SAP, your system integrator, or Microsoft to properly architect and implement the right high-availability and disaster recovery strategies. It's also important to consider the recovery point objective RPO and the recovery time objective, which are specific to your environment.
However, another host that will take over the role of the master name server must be up and running. The Overview script provides information about the system replication landscape and the replication state for each service. In this setup, command-line tools are required for some tasks. If you want to remove a host that runs the master name server, every participant has a Linux server to work through the exercises.
Note: Set the parameters carefully to avoid log full or disk full situations. If there are still standby hosts available, another failover is triggered and this host is set to ERROR. Pre-defined Table Placement Scenarios Sa; the following scenarios, this disaster recovery option requires a reliable connection channel between the primary and secondary sites. Like storage replication, SAP provides recommendations regarding table distribution configurations.Possible solutions to repair the error include restarting a failing service on the disasteer server, or switching to a new host in the same data center. Hot and warm data are then distributed across hosts. Course Version: 15 Course Duration: 3 Day s. Reinitialization of the system database will not restore any data previously stored in the system database.
This is achieved by eliminating single points of failure fault toleranceand hugh the ability to rapidly resume operations after a system outage with minimal business loss fault resilience. File Management Suite. To avoid data corruption caused by unexpected active or reviving services, this program also checks for active name servers with network and storage based heartbeats and uses fencing to set the SCSI-3 persistent reservation. The takeover time has been reduced and more components are already initialized at replication time.