Posts Tagged ‘Fault-Tolerance’
Here’s an interesting article from the Aberdeen Group about protecting virtualised environments. Some sound advice here about tiering your applications to understand whether they should be deemed normal, highly available or critical. This is especially true if you are virtualising them – and there is a note to say that over 50% of applications these [...]
Filed under: Virtualization | Leave a Comment
Tags: aberdeen group, Fault tolerant, Fault-Tolerance, virtualisation, Virtualization
Great article here, which heads off down the path of direct attached virtualisation vs. distributed virtualisation. I hadn’t really thought much about it before. Anyway, what has it got to do with availability? Well, firstly, there seems to be a huge difference in the quality of service that can be provided purely from a latency perspective. [...]
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Tags: Availability, Fault-Tolerance, virtualisation, Virtualization
Technology to Simplify Parking
Now this is what I call progress! I wonder how many hours in a year we spend looking for a car parking space and then come back to find that we have a ding in the door or a scuff on the bumper (that’s a fender for my US colleagues)? There is a simple elegant [...]
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Tags: Fault-Tolerance
Read through some older posts on this blog and somewhere (quite often actually) you will find reference to the impact of services being unavailable – in the IT world this is referred to as downtime. Now, I don’t want to pick on any company in particular, but the consequences of systems unavailability is dramatically highlighted [...]
Filed under: Uptime | Leave a Comment
Tags: brand value, Downtime, Fault-Tolerance, uptime assurance
Can you spot the third tier? I read through Combining HA and BCA Best Practices a couple of times but could only come up with two. They talk about non-mission critical (is there such a thing these days?) and mission critical. I would suggest the third tier ought to be fault tolerance where HA will [...]
Filed under: Fault-Tolerance, Uncategorized | Leave a Comment
Tags: BCA, Fault-Tolerance, HA, uptime assurance
With Blackberry in the news so much over the last couple of days, it’s good to look at some specific technologies that are designed specifically to ensure adequate levels of uptime. Have a peek at this one sponsored by VMware and its alliances.
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Tags: Fault-Tolerance, High Availability, vmware
So IT complexity is on the rise is it, even with virtualisation? Is it really a surprise? Not when you consider that the majority of systems deployed rely on high availability clustering of some description – these are the systems that deploy failure/restart technology – generally they work but they sure are complex to administer [...]
Filed under: Virtualization | Leave a Comment
Tags: Fault tolerant, Fault-Tolerance, virtualisation, Virtualization
I like the concept of belt and braces to stop the network falling down and the clear advice dictates that network redundancy requires two of everything. If you have the funds, then go for 4 of everything. When I read this I think of the compute node and ask what is a similar architecture? Fault [...]
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Tags: Fault tolerant, Fault-Tolerance, High Availability
IPsec High Availability: A New Standard Published | SYS-CON MEDIA. If ever there was a case of using a lump hammer to crack a nut, this is it. A new standard has had to be published and why? Let’s be honest – it’s because clustering is overly complex and ultimately unreliable. IT needs to follow the [...]
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Tags: clustering, Fault-Tolerance
Mission critical virtualisation
An interesting one here that looks at virtualising mission-critical applications. I have a simple message: “Go for it!” It is argued that fault tolerance is baked into the vmware stack – I say it’s too limited for these app’s – running on a single core and the mere ability to host four per physical server [...]
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Tags: Fault-Tolerance, mission critical, uptime assurance, virtualisation, Virtualization
Who is the Availability Advisor?
Andy Bailey is Availability Architect at Stratus Technologies.
When not blogging about High Availability, Continuous Availability and Fault Tolerance, he enjoys fast cars and relaxing with his Pipe Organ.
Twitter: @AndyStratus
Linkedin: Andy Bailey
Availability Advisor
