In “Cloud SLAs Are Worthless But Does this Matter?“, we concluded that there are some significant differences in how SLA’s are perceived between those being in place with an IT organization and those offered by a public cloud vendor. The principle difference appears to be that an IT SLA is an agreement that an IT organization strives to honor, in contrast to a public cloud SLA which is more of a marketing statement designed so that the cloud vendor can never violate it. Continue reading So What Should a Cloud SLA Look Like?
Mike DiPetrillo’s post entitled VMware is Building Clouds sparked some interesting thoughts and discussion about what it means to have federated clouds and how do you define such federation? Is federated required to make ‘cloud’ ubiquitous or are we already there? But is the discussion really about federated clouds or simplistic data object movement between the VMs or about cloud management?
When we talk about cloud data we often speak about moving virtual machines around, but is that the proper way to do this? Given that a VM could be 100s of gigabytes, could the movement between clouds happen fast? What about the runtime and security contexts that surround the data to be moved (whether a VM or not). Does this move with the data object or does it stay within the source environment. I have this question regardless of cloud type. Continue reading Federated Clouds? Possible?
A Service Level Agreement (SLA) is an excellent expectations-managing mechanism, but it’s important to manage your own expectations of what an SLA can realistically accomplish. Just those three words “Service” “Level” and “Agreement” is often an attention turn-off I know: SLAs are to infrastructure bods what documentation is to developers. Yet, when considering taking up cloud and utility services many consider that the SLAs offered aren’t reliable, if they exist at all. So the SLA becomes the blocker – ‘If I move services out of my data centre, how will I guarantee availability and performance’.
Are SLAs for Cloud services really worthless and if they are, will the wider adoption of cloud services be impacted because of this?
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
In 1436 Johannes Gutenberg collaborated with a gem cutter and a paper mill owner to seek seed funding from venture capitalists to began work on the ‘Printing Press’. Their invention began the ‘Print Revolution’ driving a wider spread of knowledge and new understanding, innovation and industry. Printing is so fundamental that it is often overlooked as an IT service when migrating to virtualised desktops. In Part I, we considered issues with distributed printing and what printing functions you should consider for your desktop architecture.
VDI Printing. Is it the Nemesis it was with Presentation Virtualisation? If so would client hypervisors help, or is it that traditional desktops delivery is still the best method? In Part II we’ll consider the core printing options for the likes of Citrix XenDesktop, Microsoft RDS, Quest vWorkspace and VMware View; and how they match to our printing considerations. Do you still need third party products to make your print solution effective? We’ll take an overview of solutions from ThinPrint, triCerat and UniPrint to help find out.
Hopefully you can use this knowledge to avoid any user revolution to your hosted desktop implementation, and instead, press on to get the best printing solution for your organisation.
BMC has announced that they have bought Coradiant, the leader in web applications performance management. Coradiant specialized in helping IT organizations understand the performance (response time) of their business critical and performance critical web applications. This allows IT organizations to be proactive in the management of the infrastructure supporting these applications leading to fewer brownouts and outages. Continue reading News: BMC buys Coradiant