It is high time now to take a closer look at the physical architecture and the software architecture that enables all the functionality as decribed in my previous post about the business view on cloud-enabled infrastructure for SAP. Let us take a quick look at the most important ingredients of the Software-Defined Data Center and how you can run your SAP systems on top of it.
The physical architecture consists of three sites. The figure below shows the solution with VMAX storage but is also validated with the VNX platform. Production sites A and B are located within synchronous distance, with cross-site IP/SAN connectivity and layer 2 network. The EMC VPLEX Metro systems in sites A and B provide active/active storage access and enable cross-site high availability, application mobility, and maximum resource utilization. In addition, both sites A and B are equipped with EMC RecoverPoint to provide disaster recovery capability, and site B is equipped with EMC Avamar and EMC Data Domain to provide data protection for both cross-site and local systems.
A third site (site C) is situated remotely in a different failure domain. This site serves as a standby disaster recovery site that contains asynchronous replicated datastores from site A and B through EMC RecoverPoint, and backup copies from site B. Site C also houses a VPLEX Witness cluster to monitor the status of the two production sites.
The entire software architecture is managed by the VMware vCloud Suite. vCloud Suite is an integrated solution that builds and manages a complete cloud infrastructure to meet the most critical IT needs. vCloud Suite pools the hardware from EMC and EMC partners, and runs each layer of the data center as software-defined services. vCloud Suite creates pools of computing, storage, and networking, with dynamically configurable security, availability, and management services. A built-in, self-service portal and catalog, with policy-based infrastructure and application provisioning, automates the operation management.
As shown below, this software architecture is supported by two underlying VMware vCenters, one containing the management components and the other one containing the resources for the applications.
The VMware vCenter used for the management group enables the following functions:
- Multitenancy (VMware vCloud Director)
- ESXi server infrastructure management (VMware vCenter)
- Automated SAP system provisioning (SAP NetWeaver Landscape Virtualization Management)
- Monitoring and root cause analysis (SAP Solution Manager, VMware vCenter Operations Manager, EMC Storage Analytics, and EMC Storage Resource Management Suite)
- Network security (VMware vCloud Networking and Security)
- Chargeback (VMware vCenter Chargeback and EMC Data Protection Advisor)
The other VMware vCenter manages the ESXi servers that form several resource clusters. These clusters host all SAP systems in the Cloud-enabled Infrastructure. The resource clusters provide customizable choices of compute and storage capabilities.
This Cloud-enabled Infrastructure for SAP solution enables service catalogs that support the essential characteristics of a cloud solution, as defined by the National Institute of Standards and Technology (NIST).
For more please take a look at the respective reference architecture white paper that you can find on the EMC Cloud-Enabled Infrastructure (CEI) for SAP landing page.