As the dust settles on the Amazon Cloud Outage (or the mist lifts, or whatever cloud-related metaphorical cliché you prefer) I’d like to make a number of conclusions related to scalability performance, reliability and openness.
For those of you who haven’t followed the minutiae of the story, it appears that Amazon failed because a network event caused Elastic Block Storage (EBS) to start re-mirroring itself, which in turn saturated the network and caused more mirroring events in a cascade that made EBS unavailable. Continue reading Technically, the Amazon Cloud didn’t actually fail
If you are thinking of your future data center what design point or goal is top of mind? Are you thinking about “virtualizing everything” around current and future versions of VMware vSphere? Or, are you instead thinking about what it would be like to have your own instance of Amazon EC2 or Google AppEngine? Continue reading Will Scale Out Architectures Revolutionize Virtualization and the Cloud?
For an IT department these are perilous times indeed. All around you public cloud vendors are offering IT services on an easy to procure, elastic and often inexpensive basis. Many of the developers in your organization may have already concluded that getting resources provisioned for development and test projects is easier at Amazon.com than it is through your internally offered processes. If you are aware that this is happening you can console yourself by saying, “it is only development – not production”, but you should wonder what should you do to make sure that those workloads come back when they do go into production. Continue reading IT as a Service Reference Architecture
DRS is one of the most useful and interesting features of VMware vSphere (to be more specific – feature of versions of vSphere from Enterprise on up). DRS is useful because it prevents workloads (VM’s) that are consuming more than the expected amount of resources, from potentially harming the performance of their neighbors in the same host with this “excess” resource consumption. DRS is interesting because the idea of dynamically balancing the load of a system in order to ensure the performance of the critical workloads running on that system is something that was taken for granted in the days of the mainframe, but has not as yet been well implemented on distributed Intel architecture systems. Continue reading Replacing DRS – With What and Why?
One of the key themes of VMworld 2010 was “IT as a Service”. IT as a Service is simply the next logical step beyond virtualization. The key parts of the evolution from virtualization to IT as a Service is that IT as a Service involves a self-service aspect where business constituents can select “services” that are then automatically provisioned and delivered to them, and the notion of secure multi-tenancy within an enterprise’s data center for the purpose of separating the environments of multiple business units, departments or divisions much in the same way that a public cloud vendor must separate the environments of Coke and Pepsi. Continue reading Is VMware vCloud Director an effective Enterprise IT as a Service Platform?
We’ve been following Eucalyptus for some time, and they recently invited us to a briefing about a new alliance called NRE, which is a credible group of independent vendors, newScale, rPath and Eucalyptus.
This wasn’t spun from an Open Source prespective and it was interesting to see the Eucalyptus positioning to the general marketplace. Eucalyptus is positioned as the “leading” Open Source cloud, the benefit of Open Source being it is “on your own terms”. It offers IAAS in the data center, just like Amazon Web Services. It is Elastic, based on industry standard APIs, hypervisor agnostic, supports both Windows & Linux guests, and has a huge ecosystem. It’s the elasticity and the scalability that are driving the adoption. Pricing is secondary, and you also get the feeling that it’s not traditional enterprises which are picking it up. Continue reading Rationalizing the NRE Cloud Alliance – newScale, rPath and Eucalyptus