z/VSE: 45 Years of Progress - z/VM - IBM

More documents

Recommendations

Info

z/VSE: By Pete Clark 45 Years of Progress Looking back, 1965 was a milestone year for computing. It marked the formal first release of System 360 DOS (Disk Operating System). Fast forward 45 years, and today we celebrate the anniversary of DOS, currently known as System z z/VSE. In observance of the 45th anniversary of z/VSE, we asked eight individuals who have a long history with z/VSE to relate an interesting event, happening, coincidence, or factoid that involves z/VSE. This request produced some interesting historical references, thoughtprovoking observations, and insightful views into the z/VSE community. From the Early Years Thurman O. Pylant, software architect at Sterling Commerce, Inc., recalled the ever-popular spooler in z/VSE, POWER: “DOS (z/VSE) was only about two years old when I joined IBM as a systems engineer and most of my accounts were DOS users. Soon after, Larry Whitney wrote POWER [Priority Output Writers, Execution processors and Readers] in his garage and it was released as a Type 3 program. “POWER was a SPOOLing program [Simultaneous Peripheral Operations On-Line] for DOS that allowed the overlap of actual printing with the running of programs that produced the printed data (a radical concept at that time). I thought this would be perfect for my grocery warehouse customer, who produced large amounts of printed output. “We decided to do a benchmark with and without POWER. I had predicted a 25 percent improvement in work performed in the same time. We worked on setting up the benchmark, ran it, and then compiled the results. We only achieved a 24.70 percent improvement; the customer just said, ‘close enough.’ “This early experience with POWER made me want to do more with POWER: improving the RJE [Remote Job Entry] support, providing Source Library Inclusion [SLI] support, making it run virtual, working with [IBM] Development on VSE/POWER, putting VSE/POWER into its own address space, etc. It’s been a long-time love affair with software and with the VSE operating system itself. “Improving efficiency and getting more out of existing hardware has always been an important focus for DOS, DOS/VS, DOS/VSE, VSE/SP, VSE/ESA, and now z/VSE. Happy birthday!” Peter M. Horbach of B.O.S. Software Service GmbH remembers how early many of us started and the level of commitment seen in the z/VSE community: “My first contact with VSE or DOS, as it was called then, was in 1970 and I’ve been working ever since with VSE and, most important, enjoying every minute.” Andy Engels, systems programmer, expressed his appreciation for two components from the early years of z/VSE: Performance Tool (PT) and Interactive Computing and Control Facility (ICCF): “I recall working with PT to capture data for a modeling session at the SNAPSHOT facility in Raleigh. It turned out the data and modeling facility were excellent. We tuned the model to match 2 6 • z / J o u r n a l • O c t o b e r / N o v e m b e r 2 0 1 0
- - - - - - - - - - - UNLIMITED support hours - “All you can eat” for projects, support or planning Application Programmer Support Full Operations Support Systems migrations – IBM and all 3rd party vendor software On-call support 24x7x365 MENU Everyday Specials iManage Sys TM - Prix Fixe Multiple support shifts staffed to cover any time zone, anywhere in the world All services are performed by phone and remote access to customer system On-site services are provided as needed at no additional charge (reasonable T&L expenses are reimbursed) Management of issues through iAnswers Web-based ticket system Web-based project management system for longer tasks Monthly management meeting to review progress and status ONE FLAT-RATE PRICE. MONTH-TO-MONTH CONTRACT. CANCEL ANYTIME. Too hard to believe? It’s not! Check out illustro.com/iManage today! iManage Sys is the industry’s first, “all-you-can-eat” approach to providing services. This means you now have one, fixed price for unlimited support to ensure your mainframe systems are up and running at their best. Whether it’s supporting your application or operations staff with daily problems, keeping your IBM and 3rd party software up to date, or conducting a disaster recovery test, it’s all included. Period. Full stop. No exceptions. The best part? This is available 24x7x365– no sick days, no holidays, no vacations – all from a team of experts with an array of experience. Toll-free U.S. and Canada: 866.4.illustro (866.445.5878) or +1.214.800.8900 illustro.com Copyright © 2010 illustro Systems International, LLC. All rights reserved. All trademarks referenced herein are trademarks of their original companies.
Page 1 and 2: T h e R e s o u r c e f o r U s e r
Page 3 and 4: With the latest innovations you wil
Page 5 and 6: Optimize Both Performance & DB2 Mem
Page 8 and 9: The New Frontier for Cryptography o
Page 10: crossing multiple security zones—
Page 14 and 15: (keywords: OPEX, IMEX, etc.), or a
Page 16 and 17: Diagnosing CICS Problems Using No-
Page 18: most relevant to the problem. The c
Page 21 and 22: PROVEN ON 6 CONTINENTS We’re look
Page 23 and 24: A smarter planet starts with you .
Page 25 and 26: from shortened response times witho
Page 27: Offloading Queries to the IBM Smart
Page 31 and 32: mainframe operating systems, we hav
Page 33 and 34: How DB2 for z/OS Application Requir
Page 35 and 36: is concerned with minimizing lockin
Page 37 and 38: elieve potential throughput issues.
Page 39 and 40: Big Blue and the Cloud IBM has embr
Page 41 and 42: create one large, centralized repos
Page 43 and 44: E x t e n d i n g Rexx f o r CICS o
Page 45 and 46: dure that works quite well. It prov
Page 47 and 48: 10192_FATSCOPYTeaser13.qxd:Layout 1
Page 49 and 50: these files is in the EYUJHIST memb
Page 51 and 52: nine hours, 46 minutes, and 39 seco
Page 53 and 54: chain managers in the process. Mean
Page 55 and 56: even hundreds—of copies of z/OS,
Page 57 and 58: the Challenge managing of Large com
Page 59 and 60: z/Vendor Watch z196: Long-Term Plan
Page 61 and 62: Is for You! A Look at z/OS V1.12 ti
Page 63 and 64: 4 Steps to Dynamic Workload Managem
Page 65 and 66: Reading a pass-along copy of z/Jour

z/VSE: 45 Years of Progress - z/VM - IBM

Create successful ePaper yourself

Delete template?

Save as template?