How good an idea to Virtualize XenApp? There were a number of benefits identified way back then: hardware abstraction allowing easier image management and OS upgrades; options for higher availability and faster recovery; even fail-over. Virtualization enabled silo consolidation and importantly enabled better management of user capacity on servers. However, there is a price. Reduced density and performance. Not all applications will benefit. That said, the flexibility that virtualization of XenApp offers is likely of greater benefit to many organisations.
TVP Tag Archives
OpenShift — Pricing and Comparison to AWS
On June 26th,Red Hat announced a new version of OpenShift, and pricing for a future production offering (some time this year). You still can’t buy it but if you were able to buy it you’d know exactly how much it could cost – at least if you could work out what a “gear” is. Pricing allows us to start to compare it more meaningfully with other offerings. However rather than comparing with another PaaS offering, we think most people will be actually considering IaaS as an alternative, so we are going to do that comparison instead.
Apple Joins the post-PC Revolution
Apple unveiled the latest iCloud iteration at it’s Worldwide Developer Conference in San Francisco yesterday, beefing up the the fledgling service with new features that show for the first time that it too understands what post-PC means
Take it to the Cloud
Everywhere you look you hear more and more about cloud computing as well as hearing one of my favorite lines from a Microsoft commercial “Let’s take it to the Cloud…”. Companies are jumping on the cloud bandwagon in quite a big way. I wanted to point out and mention some stories and services that I am using personally and having good success with.
Apple has done quite well serving up the AppStore and iTunes for the mobile devices and Apple has recently announced that it was discontinuing MobileMe and replacing the service with iCloud. It can go without saying that this has been an invaluable tool for use with my iPhone and iPad.
Citrix announces IaaS Project Olympus built on OpenStack
One of the most intriguing names that has hitherto been at the periphery of the OpenStack initiative is Citrix. Up until last week, Citrix’s contribution was to ensure OpenStack ran on XenServer. However, this week at it’s Synergy event, Citrix made some more sigificant announcements about Project Olympus, through which it aims to provide (in collaboration with Dell and Rackspace) a route to commercial exploitation of the OpenStack codebase. For some time I have been perplexed as to what Citrix is doing. Are they genuinely intending to enter this space? Is this the real play or is it a spoiler?
Is Gluster the answer to Scalable Cloud Storage and the Amazon Outage?
Amazon failed because of simultaneous failure of its EBS in two Availability zones. If you were dependent on one of these (or mirrored across the two) you lost access to the filesystem from your Instances. It may be sensible to move to the use of the S3 mechanism (or some portable abstraction over it) for new applications, but if you have an existing application that expects to see a filesystem in the traditional way, Gluster can provide a distributed cloud-agnostic shared filesystem with multi-way replication (including asynchronous replication).