Skip to main content

The OGSA Data Architecture

One of my many hats is as co-chair of the OGSA Data working group of the Open Grid Forum. We work on the data-oriented aspects of the Open Grid Services Architecture (see also here), covering the description, movement, access, replication, federation and storage of data in a Grid environment. Our aim is to provide a framework that links existing standards with those in development, and to show gaps that are not currently covered by standards work.

We had a fruitful face-to-face meeting here in Edinburgh last week, in which we concentrated on the descriptions of the interfaces in the architecture. The architecture is really a toolbox of data services that can be composed in various ways to address a range of use cases. As I expected, this focus helped us to to describe in greater detail how the various components will work together.

I believe we should have a draft of the architecture ready for public comment soon. I'm looking forward to actually completing this work. It's been a slow process, as we have had to bring various distributed groups on board throughout, but that's the only way to create a standard that will actually have any effect in the real world.

Comments

Popular posts from this blog

Presentation: Putting IT all together

This is a presentation I gave to an audience of University staff: 

In this seminar, I invite you to consider what the University’s online services would be like, if we worked together to design them from the perspective of the student or member of staff who will use them, instead of designing them around the organisational units that provide them. I’ll start with how the services might appear to that student or member of staff, then work back from there to show what this implies for how we work, how we manage our data, and how we integrate our IT systems. It might even lead to changes in our organisational structure.

Our online services make a vital and valued contribution to the work of our students and staff. I argue that with better integration, more consistent user interfaces, and shared data, this contribution could be significantly enhanced.

This practice is called “Enterprise Architecture”. I’ll describe how it consults multiple organisational units and defines a framework …

Service Excellence, Digital Transformation and Enterprise Architecture

Our University Secretary has sponsored a major review of the University’s administrative processes, coining the banner “Service Excellence”.  The aim is to look at the services we provide to staff and students with a fresh eye, making them more effective, more efficient, and focussed on the user rather than administrative convenience.

Our CIO is sponsoring a similar programme called “Digital Transformation”. This will replace old paper-based processes, starting with the question of what would processes look like if we designed them afresh for the modern connected world.  The aim is to make processes that are more focussed on the user and hence more effective and efficient.

Both of these ambitious programmes will need an effective enterprise architecture, if they are to succeed.  Digital Transformation is intrinsically about using opportunities provided by new technology to improve services and, as such, it requires effective technology services to make data available when needed, to pro…

Not so simple...

A common approach to explaining the benefits of Enterprise Architecture is to draw two diagrams: one that shows a complicated mess of interconnections, and one that shows a nicely layered set of blocks. Something like this one, which came from some consultants:


I've never felt entirely happy with this approach.  Yes, we do want to remove as much of the needless complexity and ad-hoc design that litters the existing architecture.  Yes, we do want to simplify the architecture and make it more consistent and intelligible.  But the simplicity of the block diagram shown here is unobtainable in the vast majority of real enterprises.  We have a mixture of in-house development and different third-party systems, some hosted in-house, some on cloud infrastructure and some accessed as software-as-a-service.  For all the talk of standards, vendors use different authentication systems, different integration systems, and different user interfaces.

So the simple block diagram is, basically, a l…