Description of illustration multi-node_rms_oci.png

This image describes the architecture for the deployment of an Oracle Retail Management System application on Oracle Cloud Infrastructure with Disaster Recovery Architecture.

In this image, a box representing the customer date center, comprising the data center and the customer's on-premises equipment is connected to a dynamic routing gateway. The data center is connected via Fast Connect while the on-pre equipment is connected via a V.P.N. The dynamic routing gateway connects to a box representing the customer data center to the Oracle Cloud Data Center Region. This box is also connected via an internet gateway to external web traffic. The Oracle Cloud Data Center Region contains a virtual clooud network (V.C.N.), labeled Virtual Cloud Network 1 and represented by dotted-line box. Within this box is Availability Domain 1, represented by a shaded box. Within this Availability Domain are the different tiers that comprise the V.C.N.:
  • DMZ Tier, comprising Public Subnet 1 and containing a load balancer connected bi-directionally to the aforementioned internet gateway and dynamic routing gateway and a security list.
  • Security Tier, comprising Public Subnet A and containing a bastion server. This bastion server is connected bi-directionally via SSH connections to the dynamic routing gateway. It is also connected bi-directionally to all other tiers except the DMZ tier.
  • Web Tier, comprising Public Subnet C and containing servers for H.T.T.P, Batch processing, S.F.T.P, P.o.S., and Golden Gate Cloud Service. It also contains a security list and a route table. Application Tier, comprising Public Subnet D, containing servers for R.M.S., R.P.M., R.e.S.A., R.e.I.M, Allocation, S.I.M, Scheduler, R.I.B, I.D.M, O.B.I P.u.B, R.X.M, and B.D.I. It also contains a file storage node, a security list, and a route table.
  • Database Tier, comprising Public Subnet E, containing servers for D.BaaS or 2-node RAC V.M and for ExaC.S, plus a block storage node, a security list, and a route table. There is a load balance positioned between the Web Tier and the Application Tier.
Within the Oracle Cloud Data Center Region are several other components:
  • Serial Console
  • Service gateway
  • Auditing feature
  • I.A.M. node
  • Policies feature
  • Object storage node
  • API service
This entire Data Center Region is connected to an exact copy of itself to facilitate disaster recovery. The only difference between the two regions is that the disaster recovery region is labeled as such. The connections between the two regions are as follows:
  • The Web Tiers in each region are connected bi-directionally via R-sync.
  • The Application Tiers in each region are connected bi-directionally via R-sync.
  • The Database Tiers in each region are connected bi-directionally via an active DataGuard.

As with the primary region, the disaster recover region is connected through a dynamic routing gateway to the customer's data center via Fast Connect and to the customer's on-prem equipment via V.P.N.