Virtual Machine And Disk Fragmentation

Friday, November 28th, 2008

Technology has a funny habit of solving one problem but then highlighting another. A typical example of this is the emergence of virtual operating systems, that is an OS that runs on top of another OS. While there are many advantages to many computer users in running these configurations they all rely the humble hard disk , and as fragmentation occurs, this can lead to instability and potentially data loss.

Virtual machines must still make use of the slowest part of any modern computer system: hard drive technology. Hard Drives can be partitioned to appear as dedicated individual devices, these devices are then often utilized to store virtual partitions and virtual operating systems. Underneath this “virtual” layer, the hardware is storing data as it always has, in a fragmented inefficient manner.

Hard disk fragmentation occurs when files are split in to multiple chunks as they are slotted into spare space on the hard drive. If you are running a solitary OS chances are you have already noticed considerable slow down in your system since purchase. Just imagine two or more OS’s running causing the same file fragmentation! Pretty soon your system could come to a grinding halt.

What is more, the premature wear that all of this fragmentation can cause to the hard disk storage can dramatically reduce the useable life of the storage below. Even complex, high performance, RAID arrays can be reduced to a snail like crawl due to high levels of fragmentation. If this problem starts to show itself on a number of the storage devices in any array you could be left with a situation where data recovery is your only option.

Each operating system will have it’s own method of dealing with file fragmentation (or not as the case may be). Whilst Mac OS X will automatically defragment a file under the size of 20mb, windows pays scant regard to how badly files are fragmented. Other systems use a variety of different methods to combat the problem.

Defragmentation utilities can take care of this problem, however, running them practically ties up the machine until completion, slowing the machine to a crawl. So what can be done to remove this issue? There are a number of possibilities that can be tried.

Fortunately we are not left to the operating systems alone as there are a number of third party defragmentation applications that are far superior to the inbuilt OS tools. These can be scheduled to run when system usage is very low for example whilst the system is idle or the screen saver is running. As you go defragmentation is my personal choice.

Use separate hard disks for your Virtual Machine software. While this may appear to fly in the face of VM’s in the first place, having a robust and business capable solution is in most cases the driving factor. Some astute companies will even have a dedicated hard disk array solely for the purpose of running VM software if there is a business case for it.

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What To Think About when Buying a Slim Digital Camera

Sunday, November 23rd, 2008

Digital Cameras have come a long way since the 3 megapixel days. They can be as advanced or as simple as you want. The picture quality is usually quite good. Gone is the day of the big clunky camera. Slim is in and very popular. They come in fashion colors now. A slim digital camera is the camera that everyone wants.

There are digital cameras small enough to fit on your key chain. These are great for people who hate to miss an opportunity. These can be used to capture a moment that usually would be missed. Like a child’s first steps. You never have a camera during these moments.

These tiny cameras actually take surprisingly nice photos for their size. Teens would love them for when they are with their friends. They can catch a first baby step, a photo after a fender bender. Whatever you can use them for they will be enjoyed. It is a good first camera for a child because the cost can be minimal. The cost runs between 10.00 and 60.00 or more depending on the features and maker of the camera. Most are no frill just aim and shoot.

The cameras of today offer 10 to 12 megapixels of resolution, which means to you a better quality picture at any size. These cameras also offer face recognition which means that it will focus of the face of the picture subject for a clear shot.

Compact cameras offer features like red eye reduction, face recognition, and large LCD screens. These all help you to take better pictures. They are generally easy to use, and picture quality is great. Some offer night vision so even at night your pictures will look good.

Some have video and audio features so you can take video like a camcorder. They have telephoto lenses for those photo enthusiasts who require just a bit more control. Some will even let you edit the picture right on the camera.

The batteries are usually rechargeable which saves money on replacing them. My favorite feature is the large LCD screens. They come in many sizes, but typically 2-2.5 inch screens are used. This is great for those that cannot see well through the view finder. These mini cameras come with most everything you could need or want. They are small enough to keep in a glove compartment or carry in a purse, and yes even a pocket. Buy the model that has the features that you need at a price you can afford.

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Your PC’s Performance: How to Improve It

Saturday, November 15th, 2008

Computers are like car engines, which need to be fine tuned from time to time to keep them running at peak performance. If you don’t maintain your PC, then it can greatly affect how you accomplish your work, and how you enjoy leisure activities like web surfing and gaming. So what techniques can you use to improve on this aspect of your PC?

Now what problems are you actually facing with your used to be reliable PC? Are you particular about the memory or hard disk space, or is it something else? Be sure that you make checklist and review the problems and specs of your computer. Identify the weaknesses and think about how you can remedy the problems. In the case of a slow-running PC, there might be a need to reformat the hard drive. Before doing so, make back up copies of your files. When you are done reformatting, you will be more than pleased to know that your PC is back in shape.

Another probable issue here is security. How secure is your personal computer? We are asking this because viruses and spyware can wreak havoc in the perceived performance of a personal computer. The worst case scenarios are personal computers that are called Aquariums.

These are badly maintained personal computers that have accumulated thousands of viruses over the past years. There are personal computers that have been clocked to have ten thousand viruses in just one scanning by particularly effective antivirus software. So what do you think?

If still your PC is running at a snail’s pace, then perhaps you have a low computer memory. Perhaps the software you constantly use take up a lot of memory just for them to be installed and to run. Even if you are not currently using the software, they can be running in the background, causing your system to slow down. If this is what you have detected, then uninstall some of the software that you rarely use to maintain your PC.

If the problem is an anti-virus software, then maybe it’s time that you buy another one that is not so memory intensive. Some anti virus software take over so much of the capacities of the personal computer that everything slows down.

Mentioned here are only a few problems you can get around if you want to boost the performance of your PC. Just remember to carefully review the specs of your system before installing or uninstalling anything. Also, if the problem may be with your motherboard, don’t bother to have it repaired especially if it is more than 5 years old already. What you should do is purchase a new motherboard to be sure that your PC will be back in good running condition.

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Securing Your Laptop Settings And Data With A BIOS Password

Friday, November 14th, 2008

Technology nowadays has never been safer, as well as being in greater danger from identity theft and more. Keeping your laptop secure by using a BIOS password can save you much pain in the future. Password protection through the BIOS is simple and almost completely crack resistant. Keeping your valuable information and settings untouched is one of the main reasons of having a BIOS password.

BIOS stands for the Basic Input Output System and is basically the bare bones that the operating system loads from. It controls all of the on board devices as well as any peripherals you may have attached. When you set a password for the system, it becomes nearly impossible to crack and the system never forgets your password, keeping your information safe.

The owner of the laptop can set a password to the BIOS to protect the system. The BIOS password will never expire and can only be changed if you know the password. Setting a BIOS password really protects your data from being messed with.

Many Acer Laptops come equipped with pretty decent BIOS for default loading and ease of access. The Acer line of notebooks will most certainly benefit from having a BIOS password added as it will help those who truly wish to keep other people out of their system safe. The BIOS can be upgraded when making upgrades into your Acer laptop.

Sony brand laptops have BIOS that are hidden when you start them up. Getting into the BIOS to set up a password can be tricky for every different model. Setting a password for the BIOS will make it harder to change any important settings or allow access to your important data on the laptop’s memory. Passwords on any Sony brand notebook are recommended, as they are the ones which are most commonly stolen.

Dell notebooks offer BIOS settings that are very simple to get into and change. Protecting these settings in the BIOS is very important, especially if you leave your computer alone for long periods of time. Reaching your important data on your Dell laptop will be much more difficult when someone steals it. Keep your information and settings safe when you use a BIOS password.

Closing Comments

The BIOS is a powerful tool and can really cause some damage to a system configuration. The passwords for a BIOS were designed to protect the computer from suffering mindless changes and abuse from pranksters, coworkers and even family members that you want to keep off of your computer.

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What Are the Advantages of a Custom Built PC?

Wednesday, November 12th, 2008

Purchasing a reliable and updated computer can be a challenge, especially for those who are new at it. It is very important for consumers to determine what their computing needs and demands are, to be able to get a PC that can handle the work that is required of it.

How you use your PC and what you intend to accomplish with it best determines the kind of PC you should get. There are some advantages that you can enjoy when you buy a custom built PC over a PC that has already been prefabricated. When you say custom built, it means that the PC was made to cater to your exact computing needs. Below are some scenarios to better illustrate this:

Let’s pretend that you are a businessman in search of a PC that is competent to help you accomplish your work. Most likely, you need a PC with spreadsheets, word processors, as well as enough hardware to allow you to connect to the internet and communicate effectively with your associates. It all boils down to a functional and reliable PC, minus all the extra multimedia hardware and applications.

A businessman in this case needs a PC that can connect wirelessly to the internet, with a huge hard disk space, and a mid to high grade motherboard. As said earlier, you can scrap out the idea of getting a business PC with a high-end video card or high-end sound card, as these are reserved for those with multimedia needs.

If you are a student who is after a PC that can handle internet surfing, gaming, as well as school work, then your PC should be quite different from the specs that the businessman has noted. In the same way, however, you need a PC with a large hard drive, cable or wireless internet modems, and at least a 1.5 GHz processor. In terms of gaming needs, you should also find a PC that has a multimedia card that is reliable.

Putting several computers in an office entails a careful consideration of budget and functionality. The specifications of the PC will also change in this regard, but you have to note that a PC does not have to be equipped with a lot of hardware to be productive for your office.

An office PC must have ample disk space, and powerful enough to allow different types of tasks to be done. You will not need high-end video cards or sound-cards, but a PC that can access the internet with a good processor.

Now if you are an avid gamer, then it is not hard to understand how much more demanding you can be when it comes to selecting a PC. For sure, multimedia is a top priority, so expect a custom built PC with high end video cards, sound cards, as well as a large disk drive. Extra hardware might have to be installed depending on the need.

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Paint Techniques

Monday, November 3rd, 2008

The ideal paint for interiors is a Quality Platinum Sheen paint, It can be tinted and comes in white as well as a wide range of colours at your local distributor to your requirements. It is a high quality, high sheen, very washable, silky smooth paint, ideal for interior use. To ensure good even colour distribution for raw plaster it normally requires Two coats on a quality PVA undercoat.

It is suitable for interior and exterior surfaces.A unique blend of acrylic and selected natural minerals, Liquid Naturals paint creates a rich combination of density and uniform colour giving exceptional coverage and opacity. Liquid Naturals withstands temperature extremes and will not flake or peel, on a suitably prepared surface.

Unlike conventional acrylic paints, Liquid Naturals unique characteristics allows the product to breathe, eliminating the risk of delamination of the paint from damp surfaces. In addition, no primers or undercoat are required thereby reducing costs. Liquid Naturals also eliminates streaking on parapet walls and fascia panels, common with cement based coatings.

Naturals develops a unique naturally mottled finish over a short period after application and is available in Coarse, fine and ultra fine textures. The exciting aspect is that each application is unique. Its soft appearance belies its extreme durability and water resistant strength and high resistance to the effects of the sun, rain, wind and salt air.

A specially prepared Portland Cement based exterior paint, coloured with iron oxides, Africote’s Cement Naturals is available in powder form.This durable economical water resistant coating is suitable for application on all masonry surfaces such as sand and cement plaster or bagged brickwork. Ivory Cement Naturals used internally for a rustic homely appearance.A major advantage of Cement Naturals is its ability to be applied directly onto masonry surfaces without an undercoat. PVA and other gloss paint, patched and dense concrete surfaces, must be pre-coated with a slurry coat which is also available from the Africote range.

Ivory Cement Naturals creates a rustic homely appearance. The ability of Cement Naturals to be applied directly onto masonry surfaces without an undercoat is a huge plus factor. Paints like PVA and other products must be pre-coated with a slurry coat which is also available from the Africote range.

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Catch the COM Express

Saturday, November 1st, 2008

COM Express is a computer on module (COM) that can be used in the same manner as integrated circuits. Each module has its own integrated memory and core CPU functionality, as well as Ethernet, audio, graphics, USB and PC/ST. There are a pair of low profile, high density connectors on the module’s bottom side that map all I/O signals. Many of today’s most innovative embedded applications can benefit from compact form factors. Older methods of providing these (AGP and PCI-X), can’t satisfy top end applications. Those vary from advertising terminals, retail POS, and industrial automation to gaming, medical imaging and more.

COM modules contain all the components of a bootable computer in one easy to find component. Customization and expansion can be implemented on carrier boards specific to the application, and with the COM, those boards offer the same functionality as an entire small computer. The COM Express specification is an open COM standard, offering modular building blocks to create a solution for just about any application, and enabling smooth transitions from older interfaces like AGP and PCI, to newer ones, including SATA, PCI Express, and SDVO.

These products first started appearing in 2005, and have offered a great improvement. These small, rugged COM implementations work well in many different embedded applications, especially in form factors where add-in cards aren’t able to be used. COM methodology gives embedded developers a faster time to market, reduced risk and cost of development, better control over form, fit and function, and a lower total cost of ownership to the consumer, via scalability. That means it could be responsible for some of the biggest advances in embedded technology out there, freeing R&D from dealing with changing processors and other problems.

Embedded developers prefer the COM Express methodology because it allows to full implementation of available engineering resources to meet their core business requirements. They don’t have to spend them on figuring out how to implement evolving I/O technologies or new generations of processors. Since the embedded world is probe to volatile fluctuations in demand and serious competition, the COM approach lets system manufactures respond effectively. They can modify existing designs and expand product portfolios a lot more easily. Embedded products that have five to ten year life cycles benefit particularly from this, since their I/O capabilities and performance have to be constantly kept up to date.

Com Express gives us all the advantages of the COM approach, while adding standards that keep things simple. It’s helped accelerate development in some of the most dynamic application segments out there, including advertising and retail application, real-time medical imaging, testing equipment, hospitality, gaming, and entertainment, automation for industrial applications, and even security and military applications. COM Express has safeguarded research and development investments and lowered the total cost of ownership in each of these market segments.

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Ink Cartridges - Should You Buy Refills?

Wednesday, October 29th, 2008

Printer ink refills can save you a lot of money compared to buying new cartridges every time you run out of ink. They can cost as little as 10% of the price of an original ink cartridge.

Before deciding to go with a refill rather than a new cartridge, there are some factors that you may want to consider.

The first thing to keep in mind is that each brand and model of printer uses slightly different types of ink. If you use a “generic” refill kit that claims to work for any printer, chances are it’s not going to work very well on any of them.

You need to be sure to get a refill that is specifically compatible with your brand and model of printer, to get the best results.

Also you want to factor in what you are getting for your money. You want to be aware of how many refills you are actually getting in a kit.

While this can keep the price down, remember that a cartridge should only be refilled a couple of times before it is replaced. After that, it will start to malfunction and it won’t matter how good the refill ink is, your print quality will still be poor.

If you buy a refill that has enough ink for multiple uses, you can always buy a new (or remanufactured) cartridge after refilling yours a couple of times and then use the rest of the refill ink on that one when it’s empty.

Ink also does not last forever. When purchasing your refill kit you need to keep in mind how quickly you will be able to use it. If you will not be able to use all the ink before it goes bad you may want to rethink the purchase.

The other common problem with refill kits is that they can be quite messy if you aren’t careful when refilling them. Companies that refill empty cartridges have specialized equipment that makes it quite simple.

Ink stains everything so you want it only in the cartridge and not all over everything else. Read the directions carefully and follow them exactly to avoid making a mess that will be impossible to clean up.

You may be able to find additional instructions online at the manufactures website. If they have step by step directions with illustrations or demonstrations this could be very helpful.

Give yourself plenty of time on your first attempt to refill a cartridge. It is a learning process and you don’t want to be in a hurry. If you have to get something out right away you don’t want to be worrying about refilling your cartridge. Set aside some time to learn to do it correctly.

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Get A Top Ranking For Your URL On A Search Engine!

Monday, October 27th, 2008

Plenty of people are into creating their own websites now-a-days, mainly for the purpose of earning a little bit of extra income that way. Maybe you have created one of your own too. Now money will flow in only when some sort of traffic is generated to your website. And this is a little difficult considering that that there must be millions of websites over the World Web, and a few hundred more coming in each day! So expecting a visitor to just casually walk into your website is expecting a little too much!

Welcome to the world of URL search engines! Simply put, a URL search engine is a simple program that trawls or crawls the web to look for keywords and classifies web pages on the basis of those keywords. This enables us to neatly categorize the worldwide web and to find relevant information when we need it. The search engine also has a front-end that we use to type in the query. When this query is run, it in effect searches through billions of URLs to identify and present those URLs which have the highest incidence of the search string.

Your URL has to be submitted to a search engine website and accepted by them. www.google.com or Google is one such website. And the best part is that it gives free listings. Google has 80 search engines associated with it. One of them is AOL. So if your website is allowed to be submitted, then 80 search engines will display your websites should a keyword related to your website be typed in. Inktomi is another website that covers 125 search engines. It also includes websites like MSN, Yahoo and HotBot. But unlike Google, it does not offer its services for free–you have to pay to have your website displayed on search engine results. So it may not really be worth it.

Your website will not achieve success unless it is indexed by the search engine. Merely handing over your website for inclusion is not going to get the job done! Your website has to become known to visitors within a month to eight weeks of its inclusion, for it to be indexed. This is so with most search engines. In case you really cannot afford to wait that long, just aim for the pay-per-click option.

Where pay-per-click search engines are concerned, when web browsers type in specific keyword (s) into the search engine, some results are displayed. The minute a visitor clicks on the resulting websites, you will be charged a certain amount as the owner of that particular website. The payment depends on the keywords typed in or your rankings. If you want a higher rank, you pay more. So if you are more interested in getting traffic to your website rather than conducting any transactions, this option is the best.

Everything seems so easy on paper, but it is not really so! Imagine you have opted for the above-mentioned option. A few visitors click on your websites, but there are not really enough of them. Then is the amount you are paying substantiated by the traffic generated to your website or not? Will it really be worth it in the end? Your URL on the search engine results may become popular or not so popular. The expenses you have incurred are going more for advertising and marketing than for ensuring that your website becomes well known to visitors! So give it some serious thought before you go in for such an option.

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HP toner cartridges

Friday, October 17th, 2008

Have you ever wondered what toner really is? Toner is a powder used by laser printers and photocopiers to form the text on the paper. The first toner was a simple carbon powder. Nowadays, that old carbon powder is mixed with a polymer, improving the overall quality of the print. The polymer varies from manufacturer to manufacturer, but it can be only Styrene Acrylate Copolymer or a Polyester Resin. How do laser printers work? Basically, the process is quite simple: toner particles are melted by the heat generated by the printer’s fuser, causing them to bond to the paper. Each manufacturer has its own recipe of toner, so the formulations will vary from manufacturer to manufacturer (sometimes even from printer to printer).

In the case of old printers, the user had to pour toner in the printer’s reservoir on a daily basis. Nowadays, this problem is solved by the toner cartridge. Printers use toner directly from toner cartridges, relieving the user of this action. Some of the best cartridges on the market are the HP (Hewlett Packard) toner cartridges. Although these can be quite expensive, print quality is outstanding (after all, price reflects quality). Anyone who needs top quality black and white prints can surely use the HP toner cartridge.

But beware - to keep your printer in top condition, aside servicing it often, you must choose the right HP toner cartridge. If you demand a specific print quality, be sure to use the recommended toner cartridge. A simple yet effective way to choose the right cartridge is to take a close look at the printer.

From the information that you can gather you will be able to see what type of HP toner cartridge is required for your copier. Once you know the type of HP toner cartridge that is needed, your next step is to find a reputed office supply dealer who can sell you quality cartridges that are compatible with an HP copier

You can find dozens of such stores without much difficulty. You can even find them online, browse through catalogs, and compare prices. There could be more than one cartridge type that can fit your printer, so do your homework and see what avenues are present. You can save a lot of money with some simple research. Always check the cartridges for quality - the label should provide enough information.

Also, always make sure you received the right cartridge. A quick look at the box is enough. Another good advice is to carefully compare prices and quality - with some research, it is easy to find a high quality HP toner cartridge at a good price

You can also refill your empty cartridges to save money over buying a new one. However, a new cartridge gives best quality. Finding companies specialized in toner cartridge refilling is easy; just make sure they are to be trusted. For an expensive printer, you need to find a professional company that uses the best toner possible. Their business background can give you the best idea of their quality of service. If you manage to find the right company, you will save a lot of time and a lot of money, while getting excellent customer care and top-quality products.

You must always seek the balance between quality and price, including when it comes to purchasing HP toner cartridges. Unbeatable prices can be found online, just as many top quality products, and they all come with a two-year warranty for your own comfort and personal satisfaction!

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