Having your cake and eating it

Everyone knows that mainframes are the best computers you can have. You can run them locally, you can hide them in the cloud, and you can link them together into a massive processing network. But we also know that there are smaller platforms out there that work differently. Wouldn’t it be brilliant if you could run them all from one place?

Last summer we were excited by the announcement from IBM of its new zBC12 mainframe computer. The zBC12 followed the previous year’s announcement of the zEC12 (Enterprise Class), and 2011 saw the z114, with 2010 giving us the z196. So what’s special about those mainframes?

Well, in addition to IFL, zIIP, and zAAP specialty processors, and massive amounts of processing power, they came with the IBM zEnterprise BladeCenter Extension (zBX), which lets users combine workloads designed for mainframes with those for POWER7 and x86 chips, like Microsoft Windows Server. So let’s unpick this a little.

One issue many companies have after years of mergers and acquisitions is a mixed bag of operating systems and platforms. They could well have server rooms across the world and not really know what was running on those servers.

IBM’s first solution to this problem was Linux on System z. Basically, a company could take hundreds of Linux servers and consolidate them onto a single mainframe. They would save on energy to drive the servers and cool them, and they would get control of their IT back.

IBM’s second solution, as we’ve just described, was to incorporate the hardware for Linux and Windows servers in its mainframe boxes. You’d just plug in the blades that you needed and you had full control over your Windows servers again (plus all the benefits of having a mainframe).

But what about if you could actually run Windows on your mainframe? That was the dream of some of the people at Mantissa Corporation. They did a technology demo at SHARE in August 2009. According to Mantissa’s Jim Porell, Network World read their abstract and incorrectly assumed that they were announcing a product – which they weren’t. The code is still in beta. But think about what it could mean: running all your Windows servers on a mainframe. That is quite a concept.

Again, according to Jim, they can now have real operating systems running under their z86VM, although, so far, they are the free versions of Linux. Their next step will be to test it with industrial strength Linux distros such as Red Hat and Suse. And then, they will need to get Windows running. And then they’ll have a product.

Speaking frankly, Jim said that currently they have a bug in their Windows ‘BIOS’ processing in the area of plug-and-play hardware support. Their thinking is that it’s a mistake in their interpretation of the hardware commands and, naturally, they’re working to resolve it.

The truth is that it’s still early days for the project, and while running Linux is pretty good, we can already do that on a mainframe (although you might quibble at the price tag for doing so). But once the Mantissa technical people have cracked the problems with Windows, it will be a product well worth taking a look at, I’m sure. But they’re not there yet, and they’re keen to manage expectations appropriately.

Jim goes on to say that once the problems are solved it’s going to be about performance. Performance is measured in a couple of ways: benchmarks of primitives, benchmarks of large-scale for capacity planning, end user experiences, and what they are willing to tolerate. So it seems that they have business objectives around performance where they could be successful if they supported only 10 PCs, then more successful with a 100 PCs, and even have even greater success if they can support a 1000 PCs.

Jim Porell describes z86VM as really just an enabler to solving a wide range of ‘customer problems’ by enabling direct access between the traditional mainframe and the PC operating systems that are co-located with it.

I think that anything that gets more operating systems running on mainframe hardware has got to be good. And I’m prepared to wait for however long it takes Mantissa to get Windows supported on a mainframe. I’ll definitely feel then that I’m having my cake and eating it!

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!

The Arcati Mainframe Yearbook 2011 - now available

Every year, about this time, we welcome a new edition of the Arcati Mainframe Yearbook. It really is the standard reference work for all IBM mainframe professionals – whether they’re grizzled old-timers nearing retirement or that new batch of recently graduated enthusiasts, and everyone in between.

Why is it such an important publication each year? The simple answer is that it provides a one-stop shop for everything you need to know. For newcomers (and people moving to an area slightly outside their comfort zone) there’s a technical specification section that includes model numbers, MIPS, and MSUs for z196 and z10 processors. There’s a hardware timeline, and a display of mainframe operating system evolution. In addition, there’s the glossary of terminology section explaining simply what those acronyms mean.

One section provides a media guide for IBM mainframers. This includes information on newsletters, magazines, user groups, and social networking information resources for the z/OS environment. Amongst the things it highlights are zJournal, INSIGHT-SPECTRA, IBM Listservs, SHARE’s Five Minute Briefing on the Data Center, blogs, Facebook fan pages, and LinkedIn discussions. As well as user groups such as SHARE and IDUG.

The vendor directory section contains an up-to-date list of vendors, consultants, and service providers working in the z/OS environment. There’s a summary of the products they supply and contact information. There are a number of new organizations in the list this year, and a few have ceased trading.

The mainframe strategy section contains articles by industry gurus and vendors on topics such as: XML and SOAP data binding for enterprise applications; DataKinetics solutions for mergers and acquisitions; Thinking outside the box – monitoring DB2 security on z/OS; and CA Mainframe Chorus.

For many people the highlight each year is the mainframe user survey. This illustrates just what's been happening at users’ sites. It’s a good way for mainframers to compare what they are planning to do with what other sites have done. I will be looking at some of the survey highlights in my next blog.

The other good thing – as far as many of the 15,000 people who download it are concerned – is that it is completely FREE.

It can only be free because some organizations have been prepared to sponsor it or advertise in it. This year’s sponsors were CA Technologies, Canam Software, DataKinetics, and Type80 Security Software.

To see this year’s Arcati Mainframe Yearbook, click on www.arcati.com/newyearbook11. If you don’t want to download a large PDF, again this year, each section is available as a separate PDF file.
Don’t miss out on this excellent publication.