The future started more than a decade ago, when z/VSE defined in its strategy that Linux on System z is the natural extension for z/VSE on a System z. Modern solutions leverage the synergy of core applications and CICS transactions running in z/VSE and the new Java and Internet interfaces in Linux on System z.
Virtualization with z/VM reached new dimensions, making available virtual switch, guest LAN, and the ability to virtualize hundreds of different guest systems. z/VSE 4.3 now exploits the Linux Fast Path network topology, which effectively supports TCP/IP socket communications between z/VSE applications and Linux on System z. The communication occurs via z/VM and its internal communication layer, Inter User Communication Vehicle (IUCV), and is fully transparent for z/VSE applications. It reduces the complexity and path length in application communications.
Along with the network and virtualization, the interoperability between z/VSE and Linux on System z focuses on customer needs for modern business solutions. The Internet technologies, Java applications, and electronic business through Linux can be implemented with low impact to existing processes in z/VSE.
The maturities of the highly scalable solutions built with z/VSE and Linux on System z empower the business, modernize interaction interfaces, and simplify the IT infrastructure. The modernization trend is ongoing. Every IT unit must participate to support the changed business requirements.
Enterprise modernization is a broad area with many different definitions. The major areas of advanced solutions in z/VSE installations encompass:
- Scalable, centralized Web access for the enterprise with Linux on System z
- A central database for data warehousing and Business Intelligence (BI).
Figure 1 shows an overview of the two solutions and their integration.
Web Access for the Enterprise
With the business requirements to serve clients continuously and enable existing mainframe processes for electronic services, a scalable, flexible, standardized infrastructure and application architecture are essential. New standards and technologies are continuously emerging to help with better aligning IT with the business.
Linux on System z is a great platform for centralized User Interfaces (UIs). It can host the Web portal and Web application servers with extensions and adapters for integration of z/VSE workload. These adapters provide access to various existing z/VSE applications. The different applications can then be unified in a single interface using portal technology.