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Web Hosting - Redundancy and Failover
Among the more useful innovations in computing, actually invented decades ago, are the twin ideas of redundancy and failover. These fancy words name very common sense concepts. When one computer (or part) fails, switch to another. Doing that seamlessly and quickly versus slowly with disruption defines one difference between good hosting and bad.
Network redundancy is the most widely used example. The Internet is just that, an inter-connected set of networks. Between and within networks are paths that make possible page requests, file transfers and data movement from one spot (called a 'node') to the next. If you have two or more paths between a user's computer and the server, one becoming unavailable is not much of a problem. Closing one street is not so bad, if you can drive down another just as easily.
Of course, there's the catch: 'just as easily'. When one path fails, the total load (the amount of data requested and by how many within what time frame) doesn't change. Now the same number of 'cars' are using fewer 'roads'. That can lead to traffic jams.
A very different, but related, phenomenon occurs when there suddenly become more 'cars', as happens in a massively widespread virus attack, for example. Then, a large number of useless and destructive programs are running around flooding the network. Making the situation worse, at a certain point, parts of the networks may shut down to prevent further spread, producing more 'cars' on now-fewer 'roads'.
A related form of redundancy and failover can be carried out with servers, which are in essence the 'end-nodes' of a network path.
Servers can fail because of a hard drive failure, motherboard overheating, memory malfunction, operating system bug, web server software overload or any of a hundred other causes. Whatever the cause, when two or more servers are configured so that another can take up the slack from one that's failed, that is redundancy.
That is more difficult to achieve than network redundancy, but it is still very common. Not as common as it should be, since many times a failed server is just re-booted or replaced or repaired with another piece of hardware. But, more sophisticated web hosting companies will have such redundancy in place.
And that's one lesson for anyone considering which web hosting company may offer superior service over another (similarly priced) company. Look at which company can offer competent assistance when things fail, as they always do sooner or later.
One company may have a habit of simply re-booting. Others may have redundant disk arrays. Hardware containing multiple disk drives to which the server has access allows for one or more drives to fail without bringing the system down. The failed drive is replaced and no one but the administrator is even aware there was a problem.
Still other companies may have still more sophisticated systems in place. Failover servers that take up the load of a crashed computer, without the end-user seeing anything are possible. In fact, in better installations, they're the norm. When they're in place, the user has at most only to refresh his or her browser and, bingo, everything is fine.
The more a web site owner knows about redundancy and failover, the better he or she can understand why things go wrong, and what options are available when they do. That knowledge can lead to better choices for a better web site experience.
Start Sampling for Free with the Start Sampling Website If you are looking for the best in online sampling, there is one Web destination that you should know about. The websites is known simply as StartSampling.com, and it can do wonders for your cache of freebies. If you are an avid freebie hunter, this is a website that you will definitely want to keep at your freebies by placing it on your active bookmark list. You will find that this is a fun and active community that you can consult on a regular basis for the best in online freebie sampling. How Can You Become a Member of StartSampling? If you are a newbie to the world of online sampling and freebies, here is a brief primer on becoming a member of this active community. First, StartSampling is a free service—never sign up for a freebie service that asks for monetary compensation or that requires a yearly membership sign-up. All you need in order to become a member of the StartSampling community is the ability to willingly sample many fine products from some of the company's leading manufacturers. As a member of StartSampling, you will receive samples as well as participate in the site's own Frequent Tryer Miles program. The Frequent Tryer Milers program allows you to collect points. You collect these points from participating in a variety of sampling programs and taking advantage of special offers and promotions. As a reward for participating in these programs, you will receive pints and gifts for free. This is your reward for being an active member of the StartSampling community. How to Contact the StartSampling Company Directly If you find that you have questions and concerns about using StartSampling, you can contact the company directly by selecting the 'contact us' button that is located at the bottom of the StartSampling home page. However, you will probably find that most of your questions can be answered directly simply by perusing the FAQ section of the website carefully. The FAQ provides you with an extensive list of questions and answers that have been addressed and compiled by the company. What Exactly Does StartSampling Do? Many newcomers to the StartSampling community wonder if the company is a web research enterprise. In reality, StartSampling is a promotions and marketing company. They have recently managed to establish themselves as a leader in online sampling. They do this by connecting consumers directly with the right kinds of companies. As an active participant of the StartSampling community, you will have the opportunity to receive samples from companies that you did not previously recognize. Sampling also allows you to inform marketers about your specific desires and interests. This way, you will receive product and service offers that are tailored specifically to your interests. In effect, think of StartSampling as a way to make your voice heard as a consumer. Where Do the Product Samples Come From? With so many online samples coming your way, perhaps you are wondering where all the samples provided by this community come from. All the samples provided to you by StartSampling are furnished directly by the small and large companies that are working with StartSampling. These samples are provided to StartSampling because these companies believe in their products and want consumers to try them and express an honest opinion. Most companies are looking to receive consumer feedback from members of their targeted consumer group. Who is Behind the World of StartSampling? Many newcomers are curious about who is behind the scenes at StartSampling. StartSampling is a leading online company managed by small group of energetic individuals. It is a privately held organization that is growing at a rapid pace. Five Flex Time Options that Can Propel your Employee Productivity Flex time is something that is still very rarely used in the United States, but has many followers in other countries, especially European countries. Flex time in general means flexible working hours for employees of a company. They way the flexible working hours are implemented can differ greatly. But one thing is for sure, flexible working hours can greatly propel the employee productivity in your company. Take a look at five different ways to implement flex time in your company. The first and probably easiest way is to give your employees the option to come in to work and leave work within a certain time range. For example, so far your employees worked from 8am to 5pm, now you might give them the opportunity to come in to work anywhere from 7am to 9am, and of course, leave somewhere between 4pm and 6pm. This first model would give your employees an opportunity to be on time as long as they are within that range and their individual habits are considered in regards to being an early riser or a late sleeper. This first model would set the rule that there are 8 work hours plus a one hour lunch in a work day and these are not variables. Therefore, you only have to check their arrival and leaving times in one way or another. A second option is very similar to this, but you can expand the hours worked to a weekly or monthly check, where the employee is responsible to work 40 hours a week with one hour lunch everyday. Then he or she can come and leave in the morning and afternoon in the specified time ranges. For the employee, this means maybe on days that he or she is more energetic, they can spent more hours at work to get their work done and on days they do not feel so energetic or so good or they have family things going, on they can come in the minimum hours established from 9am to 4pm. This version of flextime is a much appreciated model by many employees, but for the employer, it means more work in tracking hours worked and arrival times, to make sure the required hours per week or months are worked. An even more advanced version of the first two flex time themes is a theme where the worker can accumulate time to take off at some point in the future. How specifically you are going to use this version is up to you. You basically are making sure that your employees are not working more than the required amount of hours. Why would you profit from this? Less time spent at the work place makes for more time to relax and regenerate and your employees will be more efficient and motivated throughout your work week. In some companies this flex time method allows the employee to accumulate hours up to a certain amount and then for example, they are allowed to leave after six hours for several days to be home for activities with their family. In an even more expanded version, a fourth version of flex time options, the employee can actually take full days off after having accumulated hours. These days are in general additional to vacation and holidays and can be taken in agreement with their supervisor. The fifth option that has been adopted by some companies actually gives the employees the chance to go into negative hours on their time account. This means if you do not have the required hours, you can still take a flex day off, but have to make sure that after a period of time, that the employer sets in the contract your account goes back to zero or higher. If the employer is a really generous person, he might allow you to completely choose the hours you want to work. You might be able to take work home or work from 10pm to 3am if you desire, as long as you have your assignments done on time and your hours are fulfilled. |