CNET's Gordon Haff wrote a great piece on the shortcomings of the exchange
model for cloud computing. His prognosis is right there in his title: "Why
cloud exchanges won't work."
I've done some thinking and writing on the topic, and it's easy to see Haff's
point: Interoperability, security, and inertia threaten to derail this new
concept before it starts.
Shortcomings of the Exchange Model
Haff's concept is centered on the following three simple qualifiers for cloud
Any platform involved in an exchange must be compatible, allowing a workload
to seamlessly move between interoperable systems. This is both critical and
absent with many of the cloud computing services available today. Most are
incompatible on a basic level, using different hypervisors for example. No
cloud exchange can seamlessly move an EC2 Xen instance to a Terremark VMware
environment, alt... (more)
Much discussion in the cloud computing world has focused on a simple
question: Is a private cloud infrastructure worthy of the name? It's been
posed in many ways, with some going so far as claiming that there is no such
thing as a private cloud. Although discussions like these are all too common
in many areas, the question really amounts to little more than counting
angels dancing on pin heads. The key issue is whether private cloud-style
infrastructure can deliver real benefits like public clouds can.
First, let's set out some definitions:
The draft NIST definition, perhaps the ... (more)
Many in the IT industry seem to enjoy arguing exactly what does and does not
constitute a cloud service. As I mentioned in my post on the controversy over
private cloud services, I do not feel that these arguments are productive. We
should focus on results and business value instead of arguing about
semantics. However, the current crop of cloud storage solutions have many
important differences from traditional SAN and NAS storage, something that
seems to surprise many end users I meet. Cloud storage capacity is not your
fathers blocks and files!
Primary, Secondary, and Tiered St... (more)
As I discussed in my previous post, What Makes Cloud Storage Different from
Traditional SAN and NAS?, today's cloud storage is unique from the SAN and
NAS (and even CAS) that has gone before. Beyond the cost and flexibility
benefits inherent in public cloud computing resources of all sorts, cloud
storage is unique in its openness, programmability, and the possibilities it
opens for distribution and collaboration.
These compelling benefits, along with an explosion of cloud hype, have led
every company with a product even remotely "cloudy" to jump into the market.
In my corner of ... (more)
Although the capacity of storage systems keeps growing, data growth keeps
absorbing available capacity. In an effort to contain costs, IT organizations
turned to tiered storage but have encountered a "glass floor": Disk space is
a small component of costs, reducing the impact of hardware solutions. IT
organizations have long turned to outsourced services to enable cost savings
on non-core infrastructure and organizational elements, and manaed storage as
a service promises to deliver remarkable savings.
Why isn't storage getting cheaper? This series of articles attempts to answer ... (more)