The “L” Word

There’s an excellent analysis by Frank Dzubeck over on Network World today about the new Enterprise Data Center and that hoary old chestnut latency. I don’t know who briefed Frank, it wasn’t me, Jeff and I talked this afternoon and I asked, it wasn’t him, since the article covered also the z10 announcement, I have a good idea though 😉

Frank covers ensembles, data center utilization and the some of the new data center fabric issues extremely well. He also makes the point, that I’d like folks to be clear about, that this isn’t the resurgance of the mainframe, or everthing back to a central server.

We’ve grown use to indefinite waits, or unbelievably fast response times from certain popular websites, but the emerging problem is around latency in the data center. How to deliver service levels and response times in an increasingly rich and complex systems environment. It’s OK to build a data center or server subsystem focussed around a single business model, something like Amazons EC2 or S3, or Googles search and query engines; it’s another to integrate a vast array of different vendors IT equipment bought at different times for different business applications and services and integrate them all together and orchestrate them as business services. While MapReduce may or may not be as good as, or better than a database, not everything is going to be run in this fashion.

Fibre channel over ethernet is a going to happen, 10Gb ethernet opens up some real options in terms of both integrating systems, and distributing services. It will be almost as fast to connect to another server as it is to talk between cores and processors within the same server. This disclosure from IBM Research today shows the way to the next generation of interconnected infrastructure, working at 300-Gbit/second, the bus goes optical making the integration of rich data systems video, VOIP, total encryption of data, secure key based secure infrastructure services, integrated with more traditional transactional systems a real possibility.

The opportunity isn’t to take the same old stuff and distribute it because the fabric is faster, it’s about better integrating systems, exploiting new ways of doing things. Introducing a common event infrastructure, being more intelligent about WAN and Application routing, having a publish/subscribe/consume model for the infrastructure and genuinely opening it up and simplifying it.

Of course, there a re lots of blanks to be filled in, but the new Enterprise Data Center is taking shape.

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About & Contact

I'm Mark Cathcart, formally a Senior Distinguished Engineer, in Dells Software Group; before that Director of Systems Engineering in the Enterprise Solutions Group at Dell. Prior to that, I was IBM Distinguished Engineer and member of the IBM Academy of Technology. I'm an information technology optimist.


I was a member of the Linux Foundation Core Infrastructure Initiative Steering committee. Read more about it here.

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