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Storage & Clustering Community Blog
Showing posts tagged with Cluster Server
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Raissa_T | 28 Feb 2012 | 0 comments

Linux’s strong revenue growth in the past few years has shown that the increase in Unix to Linux migrations is not a fluke or a temporary cost cutting measure.  In fact, IDC is projecting that Linux revenues will reach $1B by 2012.1 

The article "Get the Power of Unix for the Price of Linux" explains how organizations can leverage the savings and flexibility of the Linux platform for their  enterprises without compromises.  Please click here to learn more.

1  “Worldwide Linux Operating Environment 2011-2015 Forecast: Accelerating Toward the Era of Cloud,” IDC, April 2011

S_D | 27 Feb 2012 | 0 comments

Veritas Storage Foundation High Availability for Windows Webcast for Best Practices for Disaster Recovery and Fast Failover in virtual and physical Windows environments

With more customers running Microsoft Windows Hyper-V in their data centers, meeting uptime SLA’s as Windows applications like Microsoft Exchange and SQL scale up is critical. It is essential that you have the best high availability, automated disaster recovery plan and a cost effective solution to manage storage in your virtual environment as downtime in your clusters can be expensive from a customer satisfaction perspective and more importantly, lost revenue.

Watch Symantec’s Storage and Availability Management experts Jeffrey Armorer and Lisa Erickson give an overview of the best practices to protect business critical applications running on virtual and physical Windows servers....

Eric.Hennessey | 14 Feb 2012 | 0 comments
I was fortunate enough during my many years in the military to have been assigned to fixed-base communications units, meaning it was only on rare occasions that I had to choke down those infamous MRE (meal, ready to eat) rations that the US military hands out to personnel deployed in the field. For those unfamiliar with them, an MRE is a big packet containing a full meal for one, typically with items like corned beef hash, freeze-dried fruit, crackers & jelly, and maybe an oatmeal cookie.
 
When MREs are handed out at meal time, everyone takes a look at what their particular packet contains and the inevitable trading begins: "Anyone wanna trade with me for my corned beef hash?" or "Hey! Did anybody get chicken ala king? I'll give you my tuna with noodles!" In the end, though, everyone just put Tabasco sauce on everything to make it edible, so it didn't matter what they got in the first place.
 
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John Lanka | 27 Jan 2012 | 0 comments
As more DoD business-critical applications move to the cloud, the need for high availability becomes increasingly important—regardless of geography. Ensure your private cloud remains resilient and available.

Architecting Resilient Private Clouds

Learn how to transform your existing data center into your private cloud while ensuring it is resilient and available.

bpascua | 20 Jan 2012 | 0 comments

Solid State drives have been gaining the markets interest for the past few years. Walking Around the Storage Expo this year in Earls Court it did occur to me that this was a technology Much Thin Provisioning that was here to stay. Increasingly the variety of implementations available from true SSD arrays  to Memory Accelerators is more and more mainstream.

From the customers I speak with people are also less hung up on the technical details And are focusing more on the impact to the applications themselves. This can only mean One thing – that the IT industry is finally accepting SSD’s in all their glory are the future of storage. SSD’s  not only open the door to massive IO performance but also highlight technologies like Storage Tiering Which SSD is really an enabler for not to mention VDI which seems a sweet spot for the technology. What is clear is Solid State technologies are here to stay, what implementation becomes the market leader... Only...

Raissa_T | 16 Jan 2012 | 0 comments

Many organizations believe that they have a solid and ready to execute business continuity plan in case of a disaster.  However, according to a 2010 Forrester survey*, “many organizations have lulled themselves into a false sense of security” when it comes to how they value their preparedness.  The survey also revealed that proper plans of planning, testing, and maintenance are not actively tested as often as they should be.  This lack of preparedness is a costly strategy in terms of revenue, employee productivity, reputation, among  other factors.  Specifically, the survey found that an average recovery took 18.5 hours with 4.8 hours of data loss.  In addition, according to a StorageCraft blog, in 2011, disasters cost $52B versus $10B in 2010.  These numbers clearly indicate that organizations must evaluate their...

ScottK | 13 Jan 2012 | 0 comments

The last post looked at frequency of  cluster asymmetry, and what types of asymmetry (memory, CPU, etc.) are more common. To quickly recap, a third of clusters sampled showed some kind of asymmetry. Amount of memory and server models were the most common type of asymmetry. CPU speed & CPU model were the least common.

Going to the next level of detail: how asymmetric are these clusters? For example, when two cluster nodes have different amounts of memory, is the difference in memory a lot, or a little?  Server Model & CPU Model differences are hard to quantify cardinally or even ordinally, so let’s look at Memory, CPU speed, and the number of CPUs.

Each cluster in the sample is different, since they come from different customers. Using the absolute number of CPUs, or GB of memory, or MHz or speed, would be intuitive but misleading. Consider a one CPU difference within two different 2-node clusters. Cluster A (64, 65) and Cluster B (1,2) both...

bpascua | 11 Jan 2012 | 0 comments

Increasingly we hear more and more that IT departments are being expected to do more with less. This translates to more projects and initiatives that require the same levels of service that the business has come to expect with budget looking very much the same as in the previous years. This divergence is causing customers to look at new ways of making their data centers more efficient. Generally speaking IT managers don’t want to “save” money, they are after all looking to grow their business and their infrastructure and delivery capabilities. However our customers are looking at initiatives to drive their efficiency up while maintain high levels to their business.

Symantec (formerly VERITAS) is a key vendor to 99% of the fortune 500 their data centre portfolio. The broad base of solutions has meant that Symantec really can offer customers a vendor independent view of the data centre without any reliance on any particular flavour of hardware. A major new...

ScottK | 15 Dec 2011 | 0 comments

First, thanks to those who wrote me, both online and offline, about my last post on the distribution of cluster node counts. As a follow-up, here’s a look at cluster asymmetry – that is, how often a cluster’s nodes are not identical. This is a non-academic question, since we’re in the process of adding new servers to SORT’s cluster. It’s been a few years since our last hardware refresh, so our server model is no longer available, plus all newer models come with more CPU and memory than our current boxes.

So, I looked at how often we see asymmetric clusters among configurations customers have uploaded to SORT:

As shown above, a third of the clusters showed any kind of asymmetry. Memory was the most common. A careful review of the graph shows ‘Any’ is less than the sum of the other categories. In...