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Entries for July 2010

When I was an “Internet Architect” (lofty title alert!) I used to hear this question fairly often in design meetings, whether to run the database (DB) through the load balancer or not. I would almost always come down on the side of “no there’s no point” because the DBs have their own high availability solutions, they don’t benefit from load balancing and there are usually no multi-master solutions. Also, load balancers are expensive and resources are finite on them. Over the last few year...
When I was an “Internet Architect” (lofty title alert!) I used to hear this question fairly often in design meetings, whether to run the database (DB) through the load balancer or not. I would almost always come down on the side of “no there’s no point” because the DBs have their own high availability solutions, they don’t benefit from load balancing and there are usually no multi-master solutions. Also, load balancers are expensive and resources are finite on them. Over the last few year...
Eliminating the overhead associated with active health checks without sacrificing availability. One of the core benefits of cloud computing and application delivery (and primary purposes of load balancing) is availability. In the simplest of terms, achieving availability is accomplished by putting two or more servers (virtual or iron) behind a load balancing device. If one of the servers fails, the Load balancer directs users to the remaining server, ensuring the application being served from ...
Remember when Beanie Babies were free in Happy Meals, and tons of people ran out to buy the Happy Meals but only really wanted the Beanie Babies? Yeah, that’s what the storage compression/dedupe market is  starting to look like these days. Lots of big names are out snatching up at-rest de-duplication and compression vendors to get the products onto their sales sheets, we’ll have to see if they wanted the real value of such an acquisition – the bright staff that brought these products to fruition...
Understanding the relationship between SNAT and connection limitations in full proxy intermediaries. If you’ve previously delved into the world of SNAT (which is becoming increasingly important in large-scale implementations, such as those in the service provider world) you remember that SNAT essentially provides an IP address from which a full-proxy intermediary can communicate with server-side resources and maintain control over the return routing path.There is an interesting relationship ...
The last couple of years have been painful, to say the least. Some call them unprecedented, financially, but I do believe that is pushing the descriptor a bit far, since there have been plenty of instances where business pretty much en-masse questioned the amount that IT returns for their investment and cut budgets, so the feel of this recession is not much different than what we’ve felt before, it’s just by necessity. The funny bit of this is that everyone seems to agree that IT spending still ...
Not that it was ever down and out, but the whole cloud computing concept has gotten off to a grand but challenging start.  It was all the rage when first ‘conceived’ as the new way of hosting applications with the promise of cost savings, automation, flexible/dynamic architectures, fast and repeatable deployment and a pay-as-you-go model.  The Coin Operated Cloud but with very little understanding of all the buttons, functions and risks.  As IT started to comprehend the nuances of the cloud, the...
In the data center of the future, you are going to need to be able to bring up new instances of an application, have them fully functional without any user intervention, and when they’re no longer needed they  should clean up after themselves and quietly go away. Five years ago this was fantasy talk, two years ago it was coming to the fore, and today we can see clearly that such adaptable infrastructure is going to be mandatory for any installation/application that has a highly variable rate of ...
Bottles, birds, and packets: how the message is exchanged is less important than what the message is as long as it gets there. I heard it said the other day, regarding the OpenStack announcement, that “the world does not care about APIs.” Unpossible! How could the world not care about APIs? After all, it is APIs that make the Web (2.0) go around. It is APIs that drive the automation of infrastructure from static toward dynamic. It is APIs that drive self-service and thin-provisioning o...
Storage at rest de-duplication has been a growing point of interest for most IT staffs over the last year or so, just because de-duplication allows you to purchase less hardware over time, and if that hardware is a big old storage array sucking a ton of power and costing a not-insignificant amount to install and maintain, well, it’s appealing. Most of the recent buzz has been about primary storage de-duplication, but that is merely a case of where the market is. Backup de-duplication has existe...
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