Command economies, decentralization, and the z114

It comes and goes. It’s like a pendulum swinging in one direction,  running out of steam, and then swinging in the completely opposite direction. And it applies to countries, economies, and the way people view computing. Let me explain...

During the 1970s, computing, where it existed, was very much a centralized affair. The gods of the mainframe pretty much controlled what anyone was able to do. It was like Stalinist Russia. Everything came out of the centre. You didn’t get it, unless someone at the hub of things deemed it necessary for you to have it.

Currently in the UK, we have the opposite approach in terms of our model of how things should work. Quite logically, you might think, if you live in a rural area with rolling fields full of wheat or livestock, your concerns are completely different from those of someone living in a post-industrial run-down urban area. Of course, this localism easily lends itself to the criticism of postcode lottery. Anyway, we have little islands of individuality separate from each other. Unfortunately, the reality is that political areas tend to include more than a monoculture of just rural or just urban populations. Plus you have different needs for different age groups – you can see where this idea falls down when applied to the real world, but hang on to the little islands metaphor.

Now let’s turn time back to 1989. We find the Berlin wall coming down and the whole centralized power base of the USSR and it’s Warsaw Pack allies crumbling. In the world of computing, we find the balance of opinion has moved right away from mainframes. In the early 90s, their death was confidently predicted. In its place we had millions of underpowered PCs running DOS-based operating systems. And as the 90s progressed we saw the triumph of Windows and Microsoft. We also saw that antithesis of centralization, Open Source software. Unix started life in 1969, and Linus Torvalds’ Linux arrived in 1991. Even IBM, which had developed and standardized the PC in the early 1980s, was working on the development of other platforms. 1988 gave us the AS/400 – now the IBM System i and which now runs on the POWER platform. The RS/6000, running a Unix variant called AIX, arrived in the 1990s and also now run on POWER hardware.

So, having been empowered to make their own decisions and choices of hardware and software, what have users done since then? Well, in the PC world, they go for big servers that are virtualized in order to benefit from the control that gives them. It makes back-ups and business continuity easier.

And now, here we are in 2011 and IBM announces a Business Class (basically not a top-end machine, more one for the everyman mainframe user) zEnterprise – the z114. It’s gone back to being a centralized piece of hardware because not only is it a mainframe, it’s a POWER7 box, and it has x86 blades. So that gives users a smaller footprint, less power consumption, and control of everything using the IBM zEnterprise Unified Resource Manager and the IBM zEnterprise BladeCenter Extension (zBX). The POWER7 blades mean that AS/400 and RS/6000-heritage users have a home. And the x86 blades not only run Linux x86 applications unchanged, but, by the end of the year, are expected to run Windows applications too.

The culture shock at many sites will come when the distributed applications teams (and they may have many different names) discover that all the things they’ve been planning to achieve (virtualized desktops, virtualized servers, etc) are just part of the techniques that the mainframe people take for granted. And the mainframers are going to have to understand that for many of the people in the other teams, it’s in many ways still about 1992 in terms of business recovery times etc. But when the teams do come together, the synergy is going to be very beneficial for the organization that allow it to happen.

This new mainframe, unusually, comes with a published price tag – $75,000. As part of the package you get the IBM Smart Analytics Optimizer to analyse data faster at a lower cost per transaction, and the IBM WebSphere DataPower XI50 for integrating Web-based workloads. The new hardware runs the latest version of z/OS – 1.13. You get 3.8GHz processors (the zEnterprise 196 uses  5.3GHz processors), and you can configure up to 14 of them with 10 specialty processors – zIIP, zAAP, and IFL.

The pendulum has now swung completely back. We have a single box capable of providing all the different computing needs of an organization.

He CICS, he scores!

Sadly, as a title, it only works if you’re in the parts of the world where CICS is pronounced ‘kicks’ and where people play football (and getting the ball in the back of the net is very important!). But wherever you are, I want to talk about IBM’s transaction processing system whose full title is Customer Information Control System and which runs under z/OS and z/VSE.

Basically, CICS allows users to sit at their screen and run transactions against data. It’s reckoned that about 90% of the Fortune 500 companies use CICS for banking, insurance, and various industrial systems. CICS is incredibly resilient with users potentially logging in through browsers, and the application programs they use being written in a wide variety of programming languages. The most recent version is CICS TS 4.2.

CICS first appeared in July 1969 – the year a man first walked on the moon and films such as Midnight Cowboy, Butch Cassidy and the Sundance Kid, and True Grit were nominated for Oscars. The DFH prefix for CICS messages has been apocryphally attributed to stand for the Denver Foot Hills. Development of CICS has been at the Hursley UK site since 1974.

CICS programs were pseudo-conversational – which means that they appeared as if they were conversational, while actually not being. This design meant that valuable resources were not locked waiting for a user to respond to a message. In fact coding to maximize what could be done while using the minimum amount of resources was a trick that COBOL programmers were forced to learn. Programs were multi-threaded, which meant one copy of the code could be used by more than one transaction.

System calls to CICS (eg reading a record) originally required the use of a macro call – hence the name macro-level CICS. During the 1980s we got command-level CICS. Command-level-only CICS came in the 1990s and support for macro-level application programs went.

In terms of programming languages, early users had COBOL and PL/I, and, of course, Assembler. More recently, we’ve seen Enterprise Java Beans (EJB). CICS transactions can now be invoked using an HTTP request, so CICS transactions can act as servers in a POX or REST conversation. JCICS classes allow CICS services  to be called using Java. CICS programs can be Web service providers or requesters.

The new CICS Explorer Eclipse-based graphical tooling interface for CICS provides a modern-looking management interface to CICS.

If you are interested in finding out more about CICS, you’ll be interested in the Virtual CICS user group at www.fundi.com/virtualcics. You’ll also be very interested to know that there’s a user group meeting on Tuesday 12 July at 10:30 CDT. The meeting uses Citrix GoToMeeting so you don’t need to leave your desk, and will include a presentation by Jeff Geminder, who’s a Principal Consultant with CA. The title of the presentation is: Cross-enterprise application performance monitoring and CICS-specific drill-down: approaches to finding the performance problem needle in the heterogeneous haystack. Jeff says; “In today’s complex multi-platform world, how can businesses stay ahead of the curve by reducing outages and minimizing downtime? Specifically, how can we tell whether CICS is or is not the culprit. In effect how can we find that needle in the heterogeneous haystack and get the right people in the right place at the right time.”

To find out more and to get details about how to register for the webinar, go to www.fundi.com/virtualcics/meetings.htm.

Where do the tablets go?

So, your organization has a mainframe – had one for years – and everything is nicely locked down. You can recover almost up to the minute the system or subsystem crashed (which it hardly ever does), and you’ve got people who seem to know, almost by instinct these days, when something isn’t performing quite right.

On top of that, you’ve got another layer of IT. People who use laptops with Windows and/or people who use Linux, and possibly bits or Solaris dotted around. These people have more interesting lives. They have to fight to get the best performance. Their back-up strategy is good if they can recover to last night! They probably still insist on people using XP as their Windows operating system because Vista was no good and it’s a bit of a jump to Windows 7. Plus they’re probably coming to the end of a virtualization project to reduce the number of server boxes they’ve got lying around. Parhaps they’re installing Citrix to virtualize desktops, or SharePoint to produce an intranet and join up all the separate islands of computing.

Plus you’ve got remote users, who are logging in over somebody else’s wifi. Or they might be using the 3G network on their smartphone. It’s your fault, of course, because you spent so long changing your CICS and IMS applications so they could be used in a Service-Oriented Architecture (SOA) environment. But, I guess you have strategies in place to secure the connection, and secure what applications they can run, and what data they can see.
In fact, you’re probably convincing senior managers in your organization that it really was their idea all along to combine the strengths of mainframe computing with the flexibility of distributed systems. What your organization needs is a nice z196 mainframe – perhaps one of the planned-but-not-quite-announced Business Class (BC) machines.

For those of you who’ve spent the past year on Mars, the z196 brings together the latest mainframe technology with POWER7 and x86 IBM blade systems, giving potential users z/OS, AIX, Linux, and (coming soon) Windows, all on the one box. At this stage, I should point out that there are very strong arguments for going to zLinux. It’s been around for 10 years now, and is just becoming an overnight success – as they say.

So, there you are thinking that you can use your mainframe experience and expertise to tidy up all the other computing areas in your organization and get them under your control when HR tells you they have supplied everyone on the board of directors with an iPad. Now, you might think this is a good opportunity to bring some of the board into the 21st century, but it creates yet another rip in the secure blanket you've been throwing over the company’s computing infrastructure. Can you set up a security policy for iPads? Well, yes, if they come into a Microsoft server – in the same way you would for Mac users. Can you allow board members to download apps? Or can they have only pre-approved ones? Where do you start building proper security? It’s back to herding cats!

And don’t think I’ve singled out iPads, Androids have similar issues. You can download firewalls and anti-virus software for them, but it’s not the same as RACF!

And it might not just be board members – you may still have road warriors that want the small form factor of a tablet. The issues of theft or forgetfulness compound your security problems.

My suggestion at this stage is to wait for Windows 8 tablets, and hope that the policies laid down by the non-mainframe ITers will apply to them. And by then, Windows will be running on our z196 box. So everyone’s a winner!

What’s a mainframe, Daddy?

After years of sliding my security card in the lock and entering the machine room/data centre and seeing the mainframes in there change from Sci-Fi-style boxes with flashing lights to more mundane-looking boxes. From seeing simple DASD with less capacity than the memory stick in this laptop be replaced with cache controllers and more sophisticated data storage devices. It always seemed that there were plenty of mainframes around and any normal person (me) was constantly being offered tours round installations. So it comes as a bit of a shock when a youngster clearly has no idea what a mainframe looks like or what it does!

OK, no-one may have actually said those words as such, but that was the message. Plus, I was with some friends on Saturday when the conversation turned to discussing what use a mainframe was in this day and age! As Arcati Director, Mark Lillycrop, so eloquently put it recently, mainframes are thought of as ‘your dad’s technology’. Most of the people I was chatting to felt that mainframes were relics of the past and anything they can do, a few servers could do just as well!

So for many of us mainframe verterans, our job is to get out there and spread the word. We need to tell people exactly what a mainframe is, what it can do, and how people are interacting with them all the time, but don’t realise it. That way, the new generation of youngsters that are beginning to get access to mainframe technology at universities and elsewhere will arrive with a knowledge of what mainframes can do, and why working with them can be so enjoyable.

So let’s just start with the absolute beginner’s guide to mainframes. They are computers – just like your laptop – except that over the years they faced and solved all the problems about back-ups and restores, security, and high-speed data access. They have been around for a long time – which is a good thing because lots of people have moved the technology forward. They allow millions of users controlled access to information – allowing them to create, modify, and save data from almost any data entry device you can think of, including browsers.

Mainframes have been virtualized since the 1980s, and some of the software first saw the light of day in the 1960s. Most Windows data centres have only been virtualizing for the past five years! It’s true that laptops etc are everywhere – in your home, at work, etc – but mainframes are working away in the background. Everytime you take money from an ATM (cash machine) your bank is running a transaction on a mainframe. And it is banks and large financial institutions that use mainframes. And they do it because of the reliability. They do it because, should there be an outage, they can recover back to almost the last second before they went down. Almost no transactions are lost. And as a bank customer, I like that. Lots of non-mainframe-using sites think they are doing quite well if they can recover data back to last night! You see the difference in scale here.

Mainframes run an operating system (z/OS, but could be z/VM or z/VSE) and on top of that are a number of subsystems – you might think of them as apps (but big ones!). These subsystems include CICS and IMS. Now, both of these have been being developed since the 1960s and provide ways of accessing data very quickly and securely. They allow users to fill in virtual forms. And they store data in a way that means it can be accessed very quickly.

Another ‘app’ you may have heard of is DB2. DB2 is a comparative youngster, having arrived in the 1980s. It stores data in a ‘relational’ way rather than the more traditional ‘hierarchical’ way. DB2 is a database that can exist on Windows machines as well as mainframes (and many devices in between).

Mainframes can also run Linux (z/Linux) and all the Linux applications. That makes them very cost-effective replacements for sites with numerous ageing Linux servers. Linux has been available on mainframes for just over 10 years.

And there’s plenty of software available to control all aspects of this mainframe behemoth. And you can link them together at different sites in different countries round the globe.

So if anyone asks you what’s a mainframe, you can tell them that it’s the most successful server architecture ever devised and it’s all around them doing important work.

IBM – C

IBM celebrating its 100th birthday makes you think you should write its age in Roman numerals – which is what I did in the title. How does a venerable old organization avoid being put out to grass and stay ahead of the business game? How does it become synonymous with cloud computing, smarter planet, and data analytics? I guess the answer is by completely re-inventing itself.

The truth is that IBM is not the controlling influence it once was, but that’s a good thing. No longer does it decide what customers want and try to sell it – it now listens to its customers. Another good thing.

In the 1970s, IBM was the king of computing with the combined revenues of the BUNCH significantly less its own. The BUNCH were Burroughs (still around as UNISYS), UNIVAC (still around as UNISYS), NCR (which was acquired by AT&T for a time and eventually sold its computer manfacturing business to Solectron), Control Data Corporation (now called Syntegra), and Honeywell (whose computer division became part of Groupe Bull).

During its lifetime, we’ve seen the birth of Hewlett-Packard (72-years-old), Intel (43-years-old), Apple (35-years-old), Google (12-years-old), Facebook (7-years-old), and other companies that have become kings of their not-so-small niches.

IBM itself was (obviously as we’re celebrating 100 years) founded in 1911, but was then called the  Computing Tabulating Recording Corporation. It originated with the merger of four companies: the Tabulating Machine Company, the International Time Recording Company, the Computing Scale Corporation, and the Bundy Manufacturing Company. The name International Business Machines didn’t arrive until 1924 (so more partying in 13 years time!). Bundy Manufacturing first appeared in 1889. The Tabulating Machine Company arrived in 1896.

The famous Thomas J Watson Sr joined the company in 1914 and soon became president. In 1956: Tom Watson Jr took over as CEO. Through the 1960 we get the System/360, VM, IMS, CICS, and many other things that we’re still familiar with today. In 1981 IBM invented the Personal Computer.

The early 1990s were a bad time as IBM announced its first loss. CEO John Akers talked about breaking up IBM into smaller companies that could compete better. In 1993, Lou Gerstner took over the reigns and things started to improve. In 1995 IBM acquired Lotus and its Notes software. 1995 also saw the launch of the much-admired ThinkPad laptop computer. And 1996 gave us DB2.

But over time, IBM has moved away from opportunities. It sold off its Lexmark printing business in 1991. It sold its networking business to Cisco in 1999. And it sold its PC business to Chinese-based Lenovo in 2005. But it’s still a big company, In 2011, Fortune ranked it as the 18th largest in the USA, and the 7th most profitable. Forbes ranked it as the 31st largest in the world. And it has thousands of patents under its belt.

The zEnterprise 196 hardware shows that IBM is planning for a long future. It allows all the good things about mainframes to be spread across other platforms. Plus, people are slowly grasping the amazing things they can achieve with zLinux on mainframes. Big Iron isn’t rusting away!

And IBM always had a fun side (honest!). In 1997 the Deep Blue computer defeated chess grandmaster Garry Kasparov at chess. And in 2011 a computer called Watson won the Jeopardy game show.

Happy birthday Big Blue.

Mainframes, cloud, and trans-derivational searches

Communication is a bit of a hit-and-miss business at the best of times. Suppose I was sitting in a large comfortable leather armchair and I wrote the word ‘chair’. I would be thinking about my armchair. You might be sitting at your computer on an office chair with wheels and no arms. When you read the word ‘chair’, you might think that your office chair was what I had in mind. Perhaps a trivial example, but you get the idea.

What happens if I write a complicated sentence and it’s not immediately clear what I’m saying. You would read it and perform a trans-derivational search in your mind to try to find meaning. What is a trans-derivational search? Well, it’s a bit like going to Amazon and typing the word ‘cloud’ into the search box. Amazon will search in ‘Books’, ‘Film, Music & Games’, ‘Kindle’, ‘Electronics’, etc and display all the answers. You can then make a choice. When it happens in your mind, you do a similar search and select the search result that seems to be the best fit for the unclear sentence.

The reason I mention this is because when one person says the words ‘cloud’ and ‘mainframe’, the image in their mind may be quite different to the image in anyone else’s mind. I like to think of mainframes as interesting and powerful bits of kit that keep the business world turning. Someone else may picture rusting hardware that should have disappeared in the 1990s! It’s much the same with the word ‘cloud’. One person may envisage an outsourcing opportunity, while another may view cloud as a security nightmare – a disaster waiting to happen. You can see now just how tricky this communication stuff really is!

There are people who argue that the mainframe is a cloud already. Suggesting that both are resource that can be dynamically allocated and de-allocated on demand, and can be made available within a company with the necessary security and management controls.

Typically the users of cloud computing have x86 platforms and need to be able to get what they want when they want it – ie on demand. They use primarily Amazon, Google, or Microsoft services. And, of course, everyone is now talking about cloud with announcement of Apple’s iCloud.

Going back to the mainframe, recent surveys have shown mixed interest in cloud computing from mainframers. It seems that the closer to the coal face (or whatever the mainframe metaphor for systems people might be) people are, the less interested they are in cloud. Whereas more high-level thinkers are interested to see what advantages cloud computing offers their organization.

Same words, different mental picture. It’s that communication conundrum again.

If you do have any experience of using cloud and mainframes, I’d be interested to hear about your experience over on IT Toolbox (http://datacenter.ittoolbox.com/groups/strategy-planning/data-center-infrastructure-sp/featured-cloud-computing-in-a-mainframe-environment-4234328).

And for those of you who are IMS professionals, don’t forget the Virtual IMS user group meeting on Tuesday. Gary Weinhold and Verna Bartlett from Data Kinetics will be talking about MSU reduction due to in-memory table management with (any) IMS applications. Full details including how to register are on the Web site at www.fundi.com/meetings.htm.

Cloudy but good

All this talk about 2011 being the year of the cloud rings true. I say that because marketing hype is usually a bit ahead of the curve. But I realize that I’m using cloud computing a lot these days – and I don’t mean (necessarily) for work.

Firstly, I’m using Google Cloud Connect for Microsoft Office. This is a small piece of code that’s free to download from http://tools.google.com/dlpage/cloudconnect. Once installed, you can save all your Word etc files on your laptop AND there’s a copy in Google Docs. Now, the reason I find that so useful is not simply because I know my documents are backed up (and to be honest that’s a really important reason and the one that I’d use as a selling point to most people), but it also means that I can access the documents from other computers. I have two laptops that I use all the time, and a third one, that’s usually away at users’ sites. I can now access my documents wherever I am and not have to say that I’ll send on the information after the meeting (or whatever).

Google also say on their site that this system allows users to simultaneously edit their files – which again is a great idea, although it’s not something I’ve tried.

Previously to using Google Cloud Connect, I used my Pogoplug for the same reason. I’ve mentioned Pogoplugs before in these blogs because they are so useful. It provides my own personal cloud. A Pogoplug is a little piece of kit that connects to your router. I then have four or five memory sticks plugged into it, but I could have a 2TB external hard drive. I can upload files to the Pogoplug from anywhere using a simple browser interface (https://my.pogoplug.com/) and I can share files with people, so they can see photos I’ve taken or short videos, or even Office documents. And, again, it provides me with a back-up copy of my important files.

The third piece of cloud computing I use is Wyse PocketCloud. I’ve downloaded the free app for my Android smartphone and I’ve downloaded the software for my laptop. Once they’re password synchronized, I can control my laptop from my phone. Which means, if I haven’t got a document with me, I can use my phone to launch Word on my PC and read the document. Last week I sent a document from someone else’s computer to my e-mail address. I used the PocketCloud software to log-on to my e-mail, download the file and print it. So when I returned back to base, there was the document ready for me to take to the next meeting (a school governors meeting – they don’t have wifi, hence I couldn’t be paperless). I’ve sat in McDonalds and called up files! It is a really impressive piece of software. Now, with the other cloud facilities mentioned above, I don’t know how much I’ll need to use it. But it just seems so amazing to be able to do it!

What I’m suggesting is that cloud computing is getting in under the radar and people are beginning to use it already. So, when IT departments suggest rolling out Cloud services in whatever form that takes for them, they will be pushing at an open door. There won’t be usual user resistance because the users will be perfectly happy with the concept. And, of course, mainframers will be saying that they’ve been using these cloud concepts since the 1960s – or whenever they first started working with mainframes.

Which all goes to show that 2011 really is the year of the cloud.