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Web Hosting - Changing Web Hosts, Pitfalls and Planning
At some point, nearly everyone finds it necessary to change web hosts. It may be just a migration to another server, or it may be changing web hosting companies entirely. Either way, the process is fraught with potential dangers. But there are ways to minimize the odds of problems and maximize your changes of a smooth migration.
Plan, plan, plan.
Make a very detailed list of everything that is on your current system. Review what is static and what changes frequently. Note any tailoring done to software and files. Be prepared to remake them if the systems aren't transferred properly or can't be restored. Keep careful track of all old and new names, IP addresses and other information needed to make the migration.
Backup and Test
Backup everything on your system yourself, whenever possible. Web hosting companies typically offer that as a service, but the staff and/or software are often less than par. Often backups appear to go well, but they're rarely tested by restoring to a spare server. When the time comes that they're needed, they sometimes don't work.
Do a dry run, if you can. Restore the system to its new location and make any needed changes. If you have the host name and or IP address buried in files, make sure it gets changed.
This is often true of databases. SQL Server on Windows, for example, picks up the host name during installation. Moving a single database, or even multiple ones, to a new server is straightforward using in-built utilities or commercial backup/restore software. But moving certain system-related information may require changing the host name stored inside the master database. Similar considerations apply to web servers and other components.
Accept Some Downtime
Be prepared for some downtime. Very few systems can be picked up, moved to another place, then brought online with zero downtime. Doing so is possible, in fact it's common. But in such scenarios high-powered professionals use state-of-the-art tools to make the transition seamless. Most staff at web hosting companies don't have the skills or the resources to pull it off.
Prepare for Name Changes
One aspect of moving to a new host can bedevil the most skilled professionals: changing domain names and or domain name/IP address combinations.
When you type a URL into your browser, or click on one, that name is used because it's easier for people to remember. www.yahoo.com is a lot easier to remember than 209.131.36.158. Yet the name and or name/IP address combination can (and does) change. Still, specialized servers called DNS (Domain Name System) servers have to keep track of them. And there are a lot of them.
There may be only two (rarely) or there may be a dozen or more DNS servers between your visitors' browsers/computers and your web host. Every system along the chain has to keep track of who is who. When a name/IP address changes, that pair has to be communicated to everyone along the chain, and that takes time.
In the meantime, it's possible for one visitor to find you at the new place, while another will be pointing to the old one. Some amount of downtime will usually occur while everything gets back in sync.
The Little Gotchas
But even apart from name and IP address changes, there are a hundred little things that can, and often do, go wrong. That's not a disaster. It's just the normal hurdles that arise when changing something as complicated as a web site and the associated systems that underlie it.
Gather Tools and Support
Having an FTP program that you're familiar with will help facilitate the change. That will allow you to quickly move files from one place to the next to do your part to get the system ready to go or make repairs.
Making the effort to get to know, and become friendly with, support staff at the new site can be a huge benefit. They may be more willing to address your problem before the dozen others they have to deal with at any given moment.
Ok. On your mark. Get ready. Go.
The Importance of Written Communication (written communication) Written communication is just as important as oral communication. Of course, all communication requires a clear concise flow of ideas, and words that are easily understood by any reader or listener. Written communication is one of the most difficult forms of communication as writers are typically prone to write for themselves, instead of for their audience. It is important for readers to understand what has been written and why it has been written. Writing is very different from oral communication, because words are written they cannot be taken back. Communicating through writing is more concrete than verbal communication with more room for mistakes and misunderstandings. The slightest misunderstanding can cause chaos for many, so it is important to right as clear and concise as possible. This form of communication is defined as a clear expression of ideas in writing. The clear expression of ideas includes grammar, organization, and structure of an essay, book, article, or report. Grammar is a large part of written communication, and writers must always consider spelling, punctuation, writing style, and wording before displaying their work to the world. Proper grammar and form may have a varying importance for different writing jobs, and usually depend on the method of communication used for that job. However, it is always important to strive to use correct grammar, spelling, and punctuation. Most writers use spell check and grammar check on their computers to ensure that the grammar and spelling is suitable. Grammar is also a major factor when writing as a freelance writing and submitting work to an editor. Many editors will reject further submissions from writers who have too many grammar and spelling errors. Organization of a letter, essay, article, or book is also important factors of written communication. Communication should always have a logical organization that is easy for readers to follow. For the reader, it is much easier to read a paragraph with one common theme that relates to the entire work. Most writing requires a clear flow of ideas and proper transitions to indicate when a new idea is being presented. However, transitions are not often needed for pieces of writing that are clearly organized. Ideas should also be expressed in a manner that is easy for the reader to understand and recognize. Data in the writing should also be presented accurately to support conclusions and recommendations given by the writer. The structure is also important in a piece of writing. All writing is organized into five to seven sentence paragraphs that all relate to each other. The number of paragraphs usually depends on the work that is being written. For example, it is common for essay to contain five concise paragraphs that all relate to a common theme. Generally, essays begin with an introductory paragraph, followed by three supporting paragraphs, and ended with a concluding paragraph. The basic structure of a piece of writing is only the beginning of written communication; the words used and the organization of the work is important to the readers understanding of the work. In many cases, the style format, and content must be adjusted to the communication level of the reader. The ability to convey ideas to a certain reader are very important, and a key component of written communication. Like oral communication, written communication can be seen as an aspect of life that makes the world go round, and learning to communicate through written word has become a basic skill for most people. Communication is needed in all aspects of life, and although many people cannot write well, it is important to be able to communicate out loud and on paper. Web Hosting - Managing Disk Space Few things are less exciting than managing the disk space that always seems to be in too short a supply. But few things are more important to the health and well being of your site. The most obvious aspect of managing disk space is the need to have enough. If you have only a few dozen web pages, that's not an issue. But as the amount of information (web pages, database content and more) grows, the quantity of free space goes down. That's important for two reasons. All permanent information on a computer is stored on hard drives. Temporary information is often stored in memory only. The two components are completely separate, though they are sometimes confused with one another. As the amount of free space on the hard drive decreases several effects occur. Here's one way to picture them... Imagine you had a table with a certain area and you lay out playing cards on the table. At first, you lay them out in order, the 2 at the side of the 3, then 4, and so on. But then you pick up one or two cards from the middle and discard them. Then you add some more cards. Pretty soon things look pretty random. Now cover the cards with a big opaque sheet of paper. You want the cards to appear in order when displayed to someone. A special robot could be designed to always pick up the cards from underneath the sheet in order. Or, it could slide a hole in the sheet over the cards to display them in the correct order (2, 3, 4, ...), no matter what order they are really in. That's similar to how the operating system always shows you information in a sensible way, even though it's actually stored randomly. Why should you care? Real files are stored in pieces scattered around the drive wherever there is space for them. The more free space there is, the quicker the operating system can find a place to store a new piece. That means, if you delete the junk you no longer need (and free up more space) the system actually runs quicker. It helps create space you might need, and allows the operating system to store files for you faster. But there's a second effect. As you delete old files or change them, the pieces get more and more scattered. It takes the 'robot' longer and longer to fetch or display the 'cards' in order. Existing files are fetched and put together 'on the fly' (say, when you request a graphical page or a list of names). But, it takes longer to put together the web page when there are more scattered pieces. So, the other aspect of managing disk space is to keep the pieces of the files more or less in order. A utility that does that is called a 'de-fragger' or de-fragmentation program. You can request that a system administrator run it, or if you have the authority, you can run it yourself. That keeps the 'cards' in order and allows for quicker access to them. So, managing disk space involves chiefly three things: (1) keeping enough space to store what you need to store, and also (2) keeping enough free space to make new file storage quick and (3) making old file retrieval fast by keeping things orderly. When only a few files are involved the benefit isn't worth the effort. But as the number and size of the files grow, to thousands of files or several gigabytes of data, the effect becomes more noticeable. Keeping things organized then makes a significant difference in performance. Much of this can be automated using utilities. Some will delete files in a certain folder older than a certain date. A de-fragger can be set to run automatically during times of light usage, or quietly in the background at all times. Discuss the options with your system administrator and help him or her do the job better by keeping your house in order. You'll benefit by having a better performing web site. |