Cisco ACI and Lossy Control

The centralised command-and-control method doesn’t work at scale. Many people have discovered this independently, from the Romans to the Chinese. It’s just not humanly- (or even computerly-) possible to track that many interdependent variables and make smart decisions. To manage a vast array of components, a central apparatus needs to… Read More

SFD5 Prep Work: Scale Computing

Scale sell a converged platform: compute and storage in pizza boxes that glom together to make a cluster of 3 to 8 nodes, like Voltron. It’s based on KVM, with proprietary bits added into the mix. Scale make a big deal about “no licensing” or, as they call it, a… Read More

SFD5 Prep Work: SolidFire

I had a lot of trouble figuring out what SolidFire’s architecture looks like conceptually. I had to read a bunch of different whitepapers and ‘reference architecture’ documents on their website that were pretty light on the conceptual detail, but had plenty of configuration file examples and other gritty detail that… Read More