IBM Systems Magazine, Mainframe Edition - March/April 2010 - (Page 50)

Tips and Techniques Tactical solutions Networking in a Virtualized Environment Using System z can help optimize both internal and external communications By Bill Reeder T he System z* server has been known for running multiple workloads. Nowhere is that more apparent than when integrating legacy workloads running z/TPF, Virtual Storage Extended (z/VSE*) and z/OS* with workloads running under Linux* on the same hardware platform. There are many and varied communications methods using TCP/IP between applications. I’ll highlight the most commonly used methods so those who are planning applications can be better armed for making decisions about optimizing workloads to satisfy their business needs. A key motivator behind the need System z networking hardware and virtual-networking capabilities. for virtualized networking is the increased complexity of data centers, which includes many ser vers and pieces of equipment—including routers and switches that aren’t highly utilized. Mainframe technology generally runs in excess of 80-percent CPU utilization continuously. Disaster recovery is also a strong reason to further examine System z networking capabilities. Most customers test their mainframes to 100-percent recovery on a separate machine at least annually. However, those same customers test their distributed servers and attendant-networking infrastructure about 10 percent of the time. You can improve server utilization and availability by leveraging Virtualization Changes Communications W it h t he advent of d i st r ibuted computing models over the past 20 yea r s, much ha s b e en done to protect ser ver s f rom out side interference as well as interference within an enterprise. As virtualization has become increasingly prevalent in data centers, the need to address the methods for communicating in an increasingly virtualized world has to be acknowledged and addressed. In addition, beyond the technical aspects of networking between applications within a mainframe are political-, MARCH/APRIL 2010

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe Edition - March/April 2010

IBM Systems Magazine, Mainframe Edition - March/April 2010
Table of Contents
Editor's Desk: More Than a Milestone
Dashboard: A Text Can Save a Life
Data Display: Transistors: Tiny, Mighty Drivers of Innovation
Insider: Three Tips for Optimizing IT Investments
IT Today: IBM Cognos Now! Improves Linux on System z Business Analytics
Focus on Storage: XE for Storage on z/OS Version 4.2 Introduces Enhanced Functionality
Case Study: Implementing an IBM System z10 Enterprise Linux Server Helps EFiS EDI Finance Service AG Save Money and The Environment
Cover Story: After a Decade, Linux on System z Still has Merit
Feature: IBM Encourages Easy ISV Application Porting To Linux on System z
Administrator: DCSS Technology Improves Linux Performance and Upgrade Management
Tips & Technniques: Using System z Can Help Optimize Both Internal and External Communications
Advertisers' Index
Stop Run: IBM's Hursley House Encourages Innovation

IBM Systems Magazine, Mainframe Edition - March/April 2010