A few years after their introduction, HyperConverged systems are now a reality, slowly but steadily eroding market shares from the traditional server/array platforms. They promised scalability, ease of deployment, operational and architectural simplification. While they mostly delivered on those promises, HCI systems introduced some new limitations and pain points. Probably the most relevant is a consequence of the uniqueness of HCI systems’ architecture where multiple identical nodes – each one providing compute, storage and data services – are pooled together. This induces an inter-dependency between them, as VM data must be available on different nodes at the same time to guarantee resiliency in case of failure. Consequently, HCI nodes are not stateless: inter-node, east-west communications are required to guarantee that data resiliency policies are applied. Unfortunately, this statefulness also has other consequences: when a node is brought down, either by a fault or because of a planned maintenance task, so is the storage that comes with it and data must be rebuilt or relocated to ensure continued operations.

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ClearSky is a Boston-based startup founded in 2014 by industry veterans Lazarus Vekiarides and Ellen Rubin; ClearSky comes with a unique proposition, which – if successful – might revolutionize the way primary storage is consumed. I introduced ClearSky in my previous TFD14 preview article where I described their solution; the objective is to reduce drastically the Data Center footprint of traditional primary storage by shifting it to the Cloud while at the same time simplifying DR operations and ensuring accessibility of data from any location. This outcome seemed to be impossible to achieve due to the strict latency requirements that primary storage inherently carries, but ClearSky has found an elegant and effective solution to this conundrum. However, there is one caveat here and it will be evident in the following paragraph.

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This article is a follow up to my TFD14 Turbonomic preview; at that time I knew very little about Turbonomic and that post was a collection of thoughts and impressions I gathered looking at the product from a distance. I am happy to say that after the TFD presentation, my understanding of the solution is clearer and the initial good impressions are confirmed.

Turbonomic is – in their own words – an “Autonomic Platform”; the play on words here is the merge between Automation and Economy, that is because Turbonomic uses the “Supply Chain” metaphor, where every element in the infrastructure “buys” resources from the underlying components and “sells” upstream, leveraging at the same time automation to ensure that the apps are always performing in their “Desired State”.

The objective is to “assure the applications performance” regardless of where the app is running (in the Private, Public or Hybrid Cloud). Coming from an operations background I know well how difficult it is to keep an infrastructure running within ideal parameters: any single intervention – no matter how apparently insignificant – leads to an imbalance in the infrastructure and this, in turn, leads to a deviation from those optimal parameters. What happens is that app performances are less predictable and corrective actions must be taken to return to the “Desired State”. This is what is called the “Break-Fix” loop, which requires continuous human intervention.

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Next week I will fly to Boston to attend my first full Tech Field Day conference as a delegate.

Last year I was lucky enough to be invited to the smaller scale Tech Field Day Extra event at VMworld Europe and I really enjoyed the experience, so you can imagine my excitement when I received the invite from Stephen and Tom to join them at TFD14.

Not yet time to pack a bag, but definitely time to start doing some research on the three vendors that will present at TFD14: ClearSky Data, Turbonomic and Datrium.

Let’s start this TFD14 Preview Series from ClearSky Data: from what I understand ClearSky has a very unusual approach to Cloud Storage which is normally intended for secondary/object storage kind of use cases. ClearSky has developed an interesting architecture that allows for storing all your data in the cloud while not sacrificing the performance (and use cases) typical of primary storage – all of this going beyond the obvious caching technologies that have been around for some time. More »

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