| copyright | lastupdated | subcollection | keywords | ||
|---|---|---|---|---|---|
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2024-01-12 |
pattern-sap-on-powervs |
{{site.data.keyword.attribute-definition-list}}
{: #resiliency-decisions}
| Architecture decision | Requirement | Decision | Rationale |
|---|---|---|---|
| High Availability SAP | Provide 99.95% availability for SAP | DB native replication: \n * HANA System Replication (HSR) \n * Oracle DataGuard \n * Db2 HADR \n * Sybase Replication Server \n * MSSQL Always-On \n * Cluster: \n * Pacemaker-based cluster with Red Hat Enterprise Linux HA Add-On, or with SUSE Linux High Availability Extension | Single zone high availability deployment of SAP application and database is supported. Multiple or clustered SAP application servers can be configured. |
| High Availability Infrastructure | Provide 99.95% availability for infrastructure | Redundant LPARs in an SAP Scale-out deployment with VPC ALB solution on a single-zone can provide an application SLA of 99.95% | * Minimize cost, implementation and maintenance complexity, potential latency and maximize value with IBM solutions \n * “Different Server” placement group should be chosen to build high availability within the same data center \n * PowerHA can also be implemented for cluster management if AIX is the operating system. |
| Disaster Recovery for SAP on Linux/AIX | Disaster recovery capability in secondary region | IBM Storage Protect | * IBM Storage Protect Plus provides near instant recovery and replication in hybrid multi-cloud environments \n * Support for databases Standard lead with offering (MSSQL, Oracle, HANA) \n * Standard DR capability for RPO < 15 min, RTO < 4 hours is achievable \n * Veeam is an alternative for AIX as the operating system |
| Disaster Recovery for SAP on AIX/IBM i | Disaster recovery capability in secondary region | Global Replication Service (GRS) | Global Replication Service-GRS{: external} is based on Global Mirror Replication as a configurable option. Global replication service is available only in WDC and DAL as of now. It will be available in all PowerVS regions soon. |
| Disaster Recovery - Cost Optimized | HANA disaster recovery capability in secondary region | Implement shared processor Pool | Set up shared processor pool to reserve capacity in the secondary region. Set up DR systems on minimum sized VMs to save operating cost. This is a Power Systems virtual server special feature. |
| Alternative: DR and Non-Production systems to share infrastructure. | |||
| Backup - Linux | Back up of NetWeaver and DB data | IBM Storage Protect | IBM Storage Protect is an SAP certified backup tool for SAP HANA and works with Backint. |
| IBM Storage Protect Agent for all OS including AIX if the client currently has SW ELA licensing. IBM Storage Protect works seamlessly with native SAP backup tools; provides more functions like encryption of backed-up data in transit; built-in deduplication compresses storage without more dedupe hardware | |||
| Backup - AIX | IBM Storage Protect | Alternative: Veeam is supported on AIX. However, if there is HANA/Linux in the client's landscape, only one SAP certified backup tool should be used. Then IBM Storage Protect is recommended. | |
| Backup - AIX | Veeam V12 | SAP HANA server itself, image-level, and file-level backup functions of Veeam Backup & Replication or Veeam Agent for Linux. | |
| Image and file level backups of SAP HANA servers do not guarantee transaction-consistency of database backups. | |||
| Backup - IBM i | FalconStor VTL | Although SAP on IBM i/Power Systems Virtual Servers is not SAP certified, clients might choose it if the service provider supports it. | |
| Backup - other | Point in time copy of data volume | FlashCopy | IBM Power Systems Virtual Servers offering with Block point in time snap copy on Tier 1 or Tier 3. |
| {: caption="Table 1. Architecture decsions for resiliency" caption-side="bottom"} |