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Chris Evans

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Top Stories by Chris Evans

One of the benefits of delivering Infrastructure as a Service (IaaS) through the cloud is an abstraction from the underlying hardware delivering the service.  There’s no requirement to understand what technology is being used to deliver, for example, cloud servers.  The specification of a cloud-based server is based on a few simple metrics, CPU, memory and disk space. CPU or processor power is described by most vendors in terms of cores, which translate to some abstract definition of physical computing power.  Only Amazon Web Services (AWS) reference physical CPU architecture, with processing assigned EC2 Compute Units (ECUs).  You can find more details here, but summarizing, an ECU is approximately the power of a 1.2Ghz 2007 Intel Xeon Processor.  Memory is a more tangible quantity and simply expressed in megabytes or Gigabytes.  Storage references purely disk c... (more)

HP Cloud Now Available In Beta – A First Look

HP have joined the Infrastructure as a Service (IaaS) market and released their HP Cloud service in public beta.  Here’s the announcement press release.  The services on offer are: Available Now as Public Beta Compute – on-demand server instances. Cloud Object Storage – object-based storage using RESTful APIs. Content Delivery Network – local distribution of web content. Still in Private Beta Cloud Block Storage – persistent data for compute images Relational Database for MySQL – managed cloud databases There’s also the HP Identity Service for managing key & token access managem... (more)

How Viable Is Cloud Storage?

This week has seen announcements from two companies I’ve been interested in and following for some time. Nasuni Nasuni makes a storage appliance that stores all of a customer’s data in “the cloud”.  It’s available either as a physical device (effectively a server running their software) or as a virtual machine.  What makes their product interesting is that both the data and filer configuration reside on the cloud and can be reconstituted anywhere if for some reason the filer is lost (for example if the appliance is down or power was lost).  The only piece of data the customer ne... (more)

Amazon Delivers Cloud Archive Storage with Glacier

At the end of August 2012, Amazon Web Services released their latest service offering – a long-term archive service called Glacier.  As a complement to their existing active data access service S3, Glacier provides long term storage for “cold” data – information that has to be retained for a long time but doesn’t require frequent access. What Exactly is Glacier? Many organisations need to retain data in archive format for extended periods of time.  This is for regulatory or compliance purposes or may simply be part of their normal business process.  Good examples are medical, h... (more)

Windows Server 2012 (Windows Server “8″) – Virtual Fibre Channel

This is one of a series of posts discussing the new features in Windows Server 2012, now shipping and previously in public beta as Windows Server 8.  You can find references to other related posts at the end of this article.  This post reviews the new Hyper-V 3.0 feature, Virtual Fibre Channel. Background Virtual Fibre Channel (VFC) enables a Hyper-V guest to access the physical storage HBAs (host bus adaptors) installed in the Hyper-V server.  Normally, storage adaptors would be reserved for the use of the Hyper-V guest itself however this new feature acts as a passthrough, enabl... (more)