Selecting Wireless Networking
Phil Hughes
Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.
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How to Build an Optimal Hadoop Cluster to Store and Maintain Unlimited Amounts of Data Using Microservers
Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.
Some of key questions to be discussed are:
- What is the “typical” Hadoop cluster and what should be installed on the different machine types?
- Why should you consider the typical workload patterns when making your hardware decisions?
- Are all microservers created equal for Hadoop deployments?
- How do I plan for expansion if I require more compute, memory, storage or networking?
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Comments
Re: Selecting Wireless Networking
Phil, you have many facts wrong.
> The biggest buzzword today is 802.11, a topic is which the value of something is either a, b or g
I dare you to fine me an 802.11g product.
> But what is 802.11b anyway? It is a standard, with the spectrum regulation on the part of the Federal Communications Commission (FCC) well established. Within the 802.11b standard there is what you could call a sub-group, known as WiFi So, in addition to a higher cost for the cards themselves, you are going to need more of them in order to cover the same area. Also, if you have an existing 802.11b network and you introduce 802.11a radios, you need to bridge between the networks because the radios can't talk to each other. Generally, you can use your Linux box with a regular client card in it as an access point.
Um, no, you can't use a client card as an access point. That's why they are two different devices. You can with a mesh network, but we a ways away from mesh networks being used anyplace other than Florida.
> To clarify, by access point I mean something that connects your network to another network or the outside world, rather than a specific product you buy. If you are in rural Nebraska and only want a fast network for your house, 802.11g likely is a good answer <
Considering that there's not a single 11g product yet on the market, this is a brave statement. :)
Re: Selecting Wireless Networking
you can use a client card as an access point in ad-hoc mode... granted, you can only connect one wireless client to it, but the possibility does exist.
Re: Selecting Wireless Networking
>Um, no, you can't use a client card as an access point.
You can use some cards (at least those compatible with the Prism2 driver).
Simply type iwconfig wlanX mode master and it works.
--
Benedikt Wildenhain
May the tux be with you.
Re: Selecting Wireless Networking
802.11g chips are sampling now. Expect cards by the end of the year.
As for using client cards as an access point, there sure are a lot of networks that run like that. Orinoco cards in Linux boxes seem to be about the most popular access point out there.