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Web Hosting - Sharing A Server Things To Think About
You can often get a substantial discount off web hosting fees by sharing a server with other sites. Or, you may have multiple sites of your own on the same system. But, just as sharing a house can have benefits and drawbacks, so too with a server.
The first consideration is availability. Shared servers get re-booted more often than stand alone systems. That can happen for multiple reasons. Another site's software may produce a problem or make a change that requires a re-boot. While that's less common on Unix-based systems than on Windows, it still happens. Be prepared for more scheduled and unplanned outages when you share a server.
Load is the next, and more obvious, issue. A single pickup truck can only haul so much weight. If the truck is already half-loaded with someone else's rocks, it will not haul yours as easily.
Most websites are fairly static. A reader hits a page, then spends some time skimming it before loading another. During that time, the server has capacity to satisfy other requests without affecting you. All the shared resources - CPU, memory, disks, network and other components - can easily handle multiple users (up to a point).
But all servers have inherent capacity limitations. The component that processes software instructions (the CPU) can only do so much. Most large servers will have more than one (some as many as 16), but there are still limits to what they can do. The more requests they receive, the busier they are. At a certain point, your software request (such as accessing a website page) has to wait a bit.
Memory on a server functions in a similar way. It's a shared resource on the server and there is only so much of it. As it gets used up, the system lets one process use some, then another, in turn. But sharing that resource causes delays. The more requests there are, the longer the delays. You may experience that as waiting for a page to appear in the browser or a file to download.
Bottlenecks can appear in other places outside, but connected to, the server itself. Network components get shared among multiple users along with everything else. And, as with those others, the more requests there are (and the longer they tie them up) the longer the delays you notice.
The only way to get an objective look at whether a server and the connected network have enough capacity is to measure and test. All systems are capable of reporting how much of what is being used.
Most can compile that information into some form of statistical report. Reviewing that data allows for a rational assessment of how much capacity is being used and how much is still available. It also allows a knowledgeable person to make projections of how much more sharing is possible with what level of impact.
Request that information and, if necessary, get help in interpreting it. Then you can make a cost-benefit decision based on fact.
ï»żCopyright Infringement Statistics Copyright infringement statistics, by most standards are inflated. Most recent copyright infringement statistics cite that almost 30 percent of software is pirated in the United States of America. This means that they think 30 percent of the software on your computer is illegal⊠they think weâre all thieves, to an extent. However, copyright holders have good reason to worry that weâre violating their rules: the number of suspects referred to the United States attorneys with an Intellectual Property lead charge increased twenty six percent in the period between 2002 and 2004 â and there have been studies that show that this is rising. Copyright infringement statistics are difficult to come by, but itâs plain to see itâs affecting every aspect of intellectual copy. Copyright infringement statistics show that in addition to software privacy, there are a lot of violations in the music world. Copyright infringement statistics show that many unsuspecting people, from college students to thirty-something a professional, download music on a consistent basis, and often itâs not downloaded legally. Often times, someone will download a song off a MySpace or YouTube page, without giving thought to who really owns the copyright and if itâs legal for them to have it. Copyright infringement statistics, brought to us by the music recording industry, would have us believe that online infringement is seriously hurting the recording industry. A sensible person, however, would realize that with the abundance of MP3 sales sites that this will turn quickly and recording giants will see the huge profits available online. Itâs already begun, you see, we have yet to see the impact of online music sales, and how it will increase revenue. Iâm sure, with the huge talent pool at their disposal, the media giants will find a way to monetize the internet to their fullest advantage. Copyright infringement statistics also show that many people are downloading games off the internet. With the litany of games available to us â from complete alternate worlds such as World of Warcraft to the more mainstream âThe Simsâ series, people are clamoring for PC games â and for good reason. Theyâre fun, intelligent games that play on a system everyone has â a computer. Because of this, people are always looking for new games to play and download, and they may download a game without knowing that itâs not âfreewareâ (as many internet games are). In addition to computer games, copyright infringement statistics also show that movies are downloaded in abundance on the internet. Many peer to peer file distribution sites and programs (such as bit torrent or Kazaa) allow for the transfer of very large files, and theyâre easy to find online. Using a tool provided by one of many suppliers, users can search for any item they like â and, of course, the system is abused and people download copyrighted movies and entire DVDs instead of publicly available works. Copyright infringement also branches into written works, such as articles, books, poems, etc. Many times, a student will copy a paragraph or two without realizing the implications of such copying. While they may think of it as âborrowingâ, if itâs used on a grander scale, the person could be opening themselves up to a large court fight, especially if itâs used commercially. As you can see, copyright infringement statistics show us that many people are using copyrighted works illegally. Do your best diligence when using anotherâs work â and ask for permission every time you want to use something that you havenât created. Chances are, if you just ask the question up front youâll save yourself from becoming another copyright infringement statistic and save yourself from a major lawsuit. Web Hosting - Bandwidth and Server Load, What's That? Two key performance metrics will impact every web site owner sooner or later: bandwidth and server load. Bandwidth is the amount of network capacity available, and the term actually covers two different aspects. 'Bandwidth' can mean the measure of network capacity for web traffic back and forth at a given time. Or, it sometimes is used to mean the amount that is allowed for some interval, such as one month. Both are important. As files are transferred, emails sent and received, and web pages accessed, network bandwidth is being used. If you want to send water through a pipe, you have to have a pipe. Those pipes can vary in size and the amount of water going through them at any time can also vary. Total monthly bandwidth is a cap that hosting companies place on sites in order to share fairly a limited resource. Companies monitor sites in order to keep one site from accidentally or deliberately consuming all the network capacity. Similar considerations apply to instantaneous bandwidth, though companies usually have such large network 'pipes' that it's much less common for heavy use by one user to be a problem. Server load is a more generic concept. It often refers, in more technical discussions, solely to CPU utilization. The CPU (central processing unit) is the component in a computer that processes instructions from programs, ordering memory to be used a certain way, moving files from one place to the next and more. Every function you perform consumes some CPU and its role is so central (hence the name) that it has come to be used as a synonym for the computer itself. People point to their case and say 'That is the CPU'. But, the computer actually has memory, disk drive(s) and several other features required in order to do its job. Server load refers, in more general circumstances, to the amount of use of each of those other components in total. Disk drives can be busy fetching files which they do in pieces, which are then assembled in memory and presented on the monitor, all controlled by instructions managed by the CPU. Memory capacity is limited. It's often the case that not all programs can use as much as they need at the same time. Special operating system routines control who gets how much, when and for how long, sharing the total 'pool' among competing processes. So, how 'loaded' the server is at any given time or over time is a matter of how heavily used any one, or all, of these components are. Why should you care? Because every web site owner will want to understand why a server becomes slow or unresponsive, and be able to optimize their use of it. When you share a server with other sites, which is extremely common, the traffic other sites receive creates load on the server that can affect your site. There's a limited amount you can do to influence that situation. But if you're aware of it, you can request the company move you to a less heavily loaded server. Or, if the other site (which you generally have no visibility to) is misbehaving, it's possible to get them moved or banned. But when you have a dedicated server, you have much more control over load issues. You can optimize your own site's HTML pages and programs, tune a database and carry out other activities that maximize throughput. Your users will see that as quicker page accesses and a more enjoyable user experience. |