Archive for August 14th, 2008

Data Centre Failure

Thursday, August 14th, 2008
by Amy Nutt

There are many reasons in which a data centre can fail. It can be quite frustrating, so it is important to know what those reasons are so that you can prevent them or know what to do when they happen. Because a lot of data centers exist on a site separate from the computers that are retrieving data from them, it is important that data centers continue running. When they go down, all computers pulling from them from various places around a single country or even the world are not going to be able to retrieve any information. Such is true for customer service jobs in which customer information must be retrieved from a secure data centre that resides elsewhere. If that data center is not operating, money is lost because employees are unable to do their jobs and customers become very unhappy that their situation cannot be resolved.

Reasons why data centres fail

Some of the reasons why data centers fail can be prevented and then there are some ways in which they cannot. However, it is important to do what is necessary to ensure as few outages as possible.

Here are some reasons for failure:

- The “wear-in” phase ? This is the point in time in which the data center has just become operational. It is typical that certain things may fail as they are trying to become fully operational. It is like a toddler learning how to walk. The data center has to walk too, so it is good to let it run with minimal use and gradually build until it has gotten its legs. This involves comprehensive testing as the system usage increases in order to fix problems before they become a problem.

- The “wear-out” phase ? This is when the data center is reaching the end of its life. Regular maintenance and care will slow this process, but major parts will eventually wear out. It is ideal to consistently monitor the system in order to predict failure and avoid catastrophe.

- Power failure ? Power failure is devastating to anything that relies on it for operation. It is especially devastating to a data center. That is why it is important to have a generator or two ready to take over in case the power goes.

- Generator failure ? Generators need care too and they need to be tested. Power goes out and generators take over in order to keep the data center running. Generators have been known to go out and cause data center failure.

- Metal whiskers ? If the data center hardware is sitting on a metallic surface, then that metallic surface could grow zinc whiskers. These have been known to cause short circuits, especially in data centres. There are also tin whiskers that grow out from tin and they too cause shorts. Silver whiskers that grow on silver electrical contacts and gold whiskers that develop on gold plated services are also known to cause short outs. Large fans that suck the whiskers in can be used and the elements that produce them can be replaced.

Prevention is key

Prevention is the key to keeping your data center up and running. If any of these elements occur, it is good to stay calm and do what needs to be done to keep the problem from occurring again. If you have experienced generator failure, you may wish to invest in a backup to your main generator. If you?re building a new data center, be sure to use flooring that does not produce any type of metal whiskers that can short out your hardware. By being vigilant, you can ensure that your data center uptime will be at or near 100%.

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Myspace Hide Codes - Privacy When You Need It

Thursday, August 14th, 2008
by Karen Bird

There are many codes that can be used to help protect your identity on MySpace. These codes can be used for hiding certain parts of your profile from public viewing. While many people and groups do crave attention and popularity on MySpace, others prefer their profile being kept private from everyone who isn’t a close friend.

Of course you can always set your page preference on ‘private’. That way most of your profile and friends list is hidden from the public. But your contact table will still be seen by everyone. If you don’t want a stranger sending you a friend request or a private message, there are ‘hide contact table codes’ that you can use as well.

If you don’t want to make your page private, but you want to protect the identities of your friends, there are codes you can find that will hide your friends. This will be a good idea if any of your friends are younger, it will help protect them against adults who may have the best intentions.

You can use a code to hide your online status as well. If you don’t want anyone to know that you’re logged on, just copy and paste the ‘hide online status’ code into your about me section. There is also an option for your online status on the MySpace profile editor. Another code to complement it is a code that will hide your last login date. So not only can you keep your online status private, but you can hide the time of your last login as well!

There are also codes you can use to hide your ‘about me’ section and ‘profile details’. You can easily hide your personal information from strangers. You could also use codes to make your own ‘about me’ graphics if you don’t like the format that MySpace uses. Some people like filling out ‘about me’ surveys and putting them up on their MySpace to go with their own unique layout.

There is another interesting MySpace code used to hide comments. Many people choose to keep their comments private. Hiding comments also helps a profile page to load faster, and it eliminates worry about oversized comments taking up a large portion of your page.

So now you have some ideas about how to keep your MySpace private. There are many privacy codes that will allow you to hide whatever part(s) of your profile you wish to keep invisible. There are many privacy codes to choose from, without hidding your entire profile. It’s still possible to keep your MySpace page unique and true to yourself while maintaining your privacy.

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