Following the XenServer HA announcement, we’ve been approached with
questions like “How exactly does XenServer HA work?” and “How does
XenServer HA and everRun VM work together.” Rather than respond ourselves
we thought it would be best to point to a few fellow bloggers who have
already answered these questions.
First, here’s a good post written by Anil Madhavapeddy at Citrix discussing
how the overall architecture of XenServer HA works. Second, Scott Lowe has
put together a great summary of why Citrix and Marathon worked together to
develop XenServer HA.
If you want more details, please leave us a comment.
We received over a hundred questions during the Q & A session of our April
29th webinar where we covered our new everRun technology. I've posted the
questions and respondes here for everyone's benefit.
Q: Level 3 will support 2 Socket Processors?
A: A level-3 protected workload must be single-CPU configurations. With the
ability to now support multiple workloads with everRun 2G, multiple
single-CPU workloads can be protected at level-3 on the same pair of servers,
allowing utilization of multi-processor systems.
Q: How does everRun handle custom application? From the answer, it onl... (more)
Enterprises are moving more and more applications to the cloud. Gartner
predicts that the bulk of new IT spending by 2016 will be for cloud computing
platforms and applications and that nearly half of large enterprises will
have cloud deployments by the end of 2017.1
The far-reaching impact of cloud computing is summarized in a recent McKinsey
report on disruptive technologies: "Cloud technology has the potential to
improve productivity across $3 trillion in global enterprise IT spending, as
well as enabling the creation of new online products and services for
billions of consum... (more)
There are at least three straightforward steps that best practices companies
are implementing to achieve aggressive costs savings with their server
virtualization initiatives. I'll be reviewing these three steps in more
detail, along with customer use cases, in a webinar on August 19th, "How to
Get at least 2x Greater Cost Savings from Server Virtualization." To register
for the webinar, go to: https://www1.gotomeeting.com/register/72241968
1. Expand Ratio of Virtual Machines to Physical Hosts - One of the simplest
steps companies are taking to realize larger cost savings from ser... (more)
Analyst firm The 451 Group has just released some very interesting findings
about virtualization and availability in a recent report by Chief Analyst
John Abbott. Some of the key take-aways include:
• Virtual infrastructure can form the basis of fully automated availability
processes. Availability becomes a default property of the virtual machine.
• ‘Dial up’ levels of availability can be implemented, depending on the
requirements of specific applications or departments.
• If a system restore is required after a disaster, it’s usually much
easier and much quicker to restore a virt... (more)