Windows Perfmon To Determine Performance For iSCSI

ByEddison Sherry
The performance monitor is a utility used to track a range of processes and give a real time graphical display of the results Windows 2003 system. This tool can be used to assist you with the planning of upgrades, tracking of processes that need to be optimized, monitoring results of tuning and configuration scenarios, and the understanding of a workload and its effect on resource usage to identify bottlenecks.
Using is not quite the same when monitoring physical disks that are directly accessed by the system. As you know, your network configuration and equipment will have the greatest impact on iSCSI performance. Having a high performance switch that does network buffering and flow control, having good cables between the Target and Initiators, and having quality NIC cards is critical to achieving optimal performance. The iSCSI software is capable of achieving fast rates very near the theoretical limit of 120 MB/second. But so much of the performance depends on the environment in which iSCSI is running.
You should not be making any kind of iSCSI performance analysis based solely on the Physical Disk counters in Windows Perfmon or follow general performance rules that many have posted on the web that relate to physical disk I/O because they do not apply to iSCSI. There is no physical correlation between the SAN physical disk queue and the Windows Perfmon physical disk counters once iSCSI is involved as all disk commands are now encapsulated in network packets. You can generally divide the Perfmon physical disk counters by the number of disk spindles on the SAN to arrive at a ballpark number for the Perfmon physical disk counters but it is not an exact science.
A better approach for performance analysis with Windows Perfmon is to add in the Microsoft iSCSI initiator classes focusing on them and the Perfmon network counters such as latency. You may also include the logical disk counters but the same caveat should apply to them as the physical disk counters; they are not the sole measure of iSCSI SAN performance.
PhysicalDiskAvg. Disk Queue Length counter indicates the average number of both read and writes requests that were queued for the selected disk during the sample interval. PhysicalDiskAvg. Disk Read Queue Length counter indicates the average number of read requests that were queued for the selected disk during the sample interval. PhysicalDiskAvg. Disk Write Queue Length counter indicates the average number of write requests that were queued for the selected disk during the sample interval.
Eddison Sherry had been working in Linux and other Unix flavours for long years. He had been writing blogs and article on the Linux Storage, Linux Commands and Linux Server Administration. If you are working on Linux or Unix Server its best to have a look on his blogs at Linux Technical Forum.

LED Lights: Making the Environment Safer

ByJack Peak
Light emitting diodes are the diodes that let electricity pass through them in only one direction. These diodes emit light when electricity is applied. It works just like light bulbs but it is many times more beneficial than the traditional incandescent and fluorescent lights. LED is commonly used term that is used instead of the long name "light emitting diodes". These LEDs are found in almost all the electric products of recent age. They have a large number of advantages that is why they are liked and preferred by all.
Basically LEDs are just like tiny little bulbs that can easily fit in any circuit. But they are different from the old common bulbs in a number of ways. They do not have filaments in them like incandescent bulbs that burn out when electricity passes through them. They are not mercury based. They do not get hot at once. They have long lifespan as compare to the normal lights. They are energy-efficient and environmentally friendly. Here in this article we will mainly discuss the effects of LED lights on our environment.
LED lights are the wonderful invention in the world of technology that has changed the way the world is lit. Modern research shows that even changing one single bulb to an LED home light would make a significant impact on environment. If you start using one LED light instead of a traditional light, you would be able to keep one half of the ton of carbon dioxide out of the atmosphere along with sulfur dioxide and nuclear wastes. In this way you will help the mankind by giving them a cleaner and safer atmosphere to live in.
These LED lights do not produce heat as all traditional lights produce. They do not have mercury in them so they are not potentially dangerous for the people as well as for the environment. The next point that shows that these LED lights have environmental concern is this that these lamps are non-toxic. They can be easily recycled without causing any environmental pollution.
It is the environment friendly feature of these LED lights that have turned the whole American nation towards the use of such types of lights. Their homes, offices, lawns, shopping malls, hospitals, schools and universities all are equipped with these lights. It is the beauty of these lights that they serve well for all the purposes. Common used home lights, street lights, flood lights, spot lights, backyard lights, pathway lights, there is a long list of different types of LED lights. They are easily available and their energy efficiency is their additional feature that forces common people to use these lights.

Light Emitting Diodes

ByJack Peak
LEDs certainly are everywhere; wherever you look around you, you find LED in one form or another - working in your home, working on your calculator, in your digital watches, in your garden, in your TV screen, in your laptop, in your cars - just everywhere. Earlier on, it was used to indicate, not to eliminate. But now the purpose of usage has been changed. With the advancement of technology, LED has covered almost all the different residential applications of light in our life.
Red light was perhaps the first LED light that we saw somewhere in 1962. It is then followed by yellow and green light. In this way, the whole traffic signal light came into existence. Much later, in early 90s, the broad spectrum of LED blue lights was developed. It was the beginning of the huge advancement in the field of LED. Since then, it is becoming more and more popular because of its number of advantages. In 1993, a company named Nichia combined this blue light with red and green light to make white light. It was the revolution in the field of LED technology. This first white LED light (blue LED with sulfur coating) provided enough material to create white colored light but it was very expansive at that time.
In recent days, researchers are doing research for the coming revolution of solid-state lighting. They say that they are working on different projects to control different aspects of lighting for a room. They are trying to create many wavelengths in a room and to blend them to produce special effects like the exact representation of sunlight or moonlight in the room. They are doing these efforts to provide us more comfortable and pleasant atmosphere.
LED lights hold many advantages when compare to the traditional lighting. The most important and well-considered advantage is its low power consumption. Reports said that the use of LED () saves one-third of the energy. It shows that if we use one LED light, it will help us in 10% reduction in electricity consumption along with the reduction of carbon emission. This helps in making our environment clean and safe to live in. LEDs also reduce the sulfur and nuclear elements from the atmosphere to keep us healthy. These lights are without mercury so they are easy to recycle. They are long life and durable. They are cost effective too. They are found in many shapes, colors and styles. They are manufactured for different purposes. They are easily available.

Sell Your Smartphone If You Don't Need It!

ByAdam Fuller
A lot of times, we buy things that we don't really need. This is true, especially in the case of consumer electronics. Plenty of things like laptops, computers, tablets, and smartphones are always bought for the simple fact that they are new. Other times, people just buy them to be "in" and be cool. They want to brag that they have the latest mp3 players with the biggest memories, or the latest phones with the coolest looking games.
Some consumer electronics are actually quite helpful for our daily lives like a desktop computer. And there are some things that just make you go, "Why did I even buy that?" This usually happens with smartphones. Why even buy the latest smartphone when you have a powerful computer, your own secretary, and still use Post-It notes?
When you think about it, do you really need 500,000 apps to remind you of your mother's birthday? You may think the smartphone is the craze right now, but actually it isn't.
In fact, only one-third of residents in the United States own a smartphone. What about the rest? They seem to be fine without it anyway. They don't need push email or the latest operating systems from Apple and Windows. But how about you? Do you really need it?
Here are some reasons to convince you to sell your smartphone:
1. They're all the same
- You could get the latest iPhone or Motorola Atrix models, but the earlier generations still perform the same functions. If you happen to own one, you're still going to do the same thing if you buy a new one.
2. You're not maximizing its capabilities
- Why bother giving your mother a BlackBerry when she's just a humble housewife? While the thought of giving her the latest smartphones is wonderful, it's just going to be a waste. If you just like to take pictures and send text messages, then go buy a regular mobile phone.
- Likewise, if you're always in front of the computer, you really don't get to use the smartphone's internet capabilities. Especially if you live near where you work (which likely has Internet access), having a smartphone is an impractical idea.
3. It still can't be a computer
- No matter what, an iPhone is still going to be a plain phone. If you're a gaming addict, you can't play the latest Call of Duty to hit the shelves. You're still going to be logging into your email account on the computer, and you're going to be online the whole day.
4. You barely bring it anywhere
- If you're a rich person that loves to travel, then having a smartphone is certainly handy. But if you're like the rest of the population, then a smartphone isn't really needed. If you bring a tablet computer or laptop with you everywhere you go (many people that have tablets also have smartphones), then you won't really use the Internet capabilities of the smartphone. The tablet is a better alternative for surfing.
Also, smartphones can be actually detrimental to your body's health. Owning a smartphone is a serious addiction. CNN reports that people normally check their smartphones at least 34 times a day, not because they really need to. They just check it out of habit. The brain simply commands the hands to reach out to the phone involuntarily.
This is a serious problem, as CNN also reports that it is very distracting. They report that it is hard to go back to work because important tasks are suddenly forgotten. Checking emails suddenly became involuntary.
If you tend to check your email using your smartphone too many times a day, then you need to think about it. Also, if you tend to zone out with your friends just because you need to check up on something, you have a problem.
If you're having these problems, just sell your smartphone and downgrade. But if you can't really live without it, just go buy a cheaper smartphone with basic smartphone features. You could try the BlackBerry Curve 8520. It's one of the cheapest smartphones, but it still has the basic smartphone features.
Sell your smartphone
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Why a Bin Indicator Is an Important Requirement in Industries

ByShiri Kenan
A bin indicator is used in many different industries. The industries range from grain storage, pulp and paper industry, petrochemicals to plastic manufacturing units, chemical processing centres, etc. The main function of this indicator is to calculate the level of the materials in the bins or the silos. You can use the bin level indicator to find out if the bin is empty or full, so that accordingly the bin can be filled or stopped from being filled over. Also you can monitor the bins continuously and the readings which are taken at regular intervals can then be used for inventory management. This is how bin indicators can be useful in these industries.
There are many other advantages of using a bin indicator:
1. The bins used for storing materials are huge and heavy. Without bin indicators, the industry staff would have to climb up the bin to check the level of the material in it. This could be quite dangerous. Bin indicators have thus enhanced safety in these industries.
2. You can monitor a number of bins at the same time. Thus a lot of time is saved in order to carry out this process. Also very little staff is required to manage the entire operation.
3. The bin indicators are very easy to install. With assistance from the manufacturers, these indicators can be easily installed and operated in your industry. They also require very little maintenance. Thus it saves a lot of cost as well.
4. With the help of a bin level indicator you get an accurate estimate of the material in the bin. It will give you an accurate indication of just-in-time replenishment. Because of these precise and timely indications, shut down of operations in the industry is reduced.
5. Due to the height of the bins, it is not possible to manually check the levels that the materials have obtained inside. Sometimes it causes overflow of the material. Because of the indicators, this problem is taken care of, as they give exact indication of the levels in the bins. Similarly they can also indicate if the bin has not been filled upto its capacity. Thus storage optimization can be achieved.
6. It saves on a lot of expenses. Less labour is required, less time is spent and the system itself requires very little maintenance.
Thus a bin level indicator can be used in such a manner that it makes the job of level indication easier and much faster.
Learn more about level measurement devices

Cloud Computing - Surely It's Just Pie in the Sky

Is cloud computing just another one of those fads or crazes designed to make us spend all our money on something just until the next craze comes around?
I sit behind my 6 year old laptop which is totally inferior to the mobile phone I use these days, typing into a word processing software application that consists of so many elements, I am unlikely to use them in not only a month of Sundays but probably a century of Sundays. It is a package I have paid for (honest) and comprises of seven software applications of which I will probably only use three and none of them to anything like their full potential. However I am lucky because I am one man band who has paid once for his license and get updates downloaded free; I will probably be able to use the package for years as any major upgrades or new applications will probably include a handy set of converters that will make my work forever readable (I am not sure that is such a good thing, from your point of view not mine).
The impact on small to medium business
Now if I was a small to medium size business of say 100 employees and the company needed some kind of computer for 90 of those employees, they may only use one or two applications for a fraction of the time they are actually working; that is an awful lot of unused technology being left unused.
To break this down there would be a license fee payable for each and every one of the ninety software packages, the cost of upgrading the packages when necessary, the wages for the staff you would need to employ to install, fix problems and update each and every package on each and every computer. All of a sudden you are spending an awful lot of your budget on maintaining your computers, the use of those computers may be necessary to keep your business successful but there is also an awful lot of wasted money.
What's in a cloud
In comparison consider the concept of cloud computing; your business would draw up a contract with a service provider who would supply you with all the necessary IT services you need to run your business such as;
• Applications
• Software
• Communications
• Productivity
• Web and email security
• Storage
• Servers
• Tailor made applications
All of this is the responsibility of the service provider and kept remotely away from your business.
What savings?
When it comes to individuals on your staff using computers if 75 of them only use a word processing package then that is all you pay for, if 10 of them use a spreadsheet package once a month that is all you pay for. I think you can see where I am going; no smoke in your eyes.
Add to this the cost savings made by not having to employ a specialist IT department, not having to pay for expensive servers or storage facilities and not having to pay for upgrading and updating software and applications; it all adds up especially if you tie in the increased productivity.
I believe that Cloud Computing is the way forward for all computer based small and medium businesses; an added benefit is when you look into that lovely clear blue sky you do not see a cloud.
For more information about Cloud Computing visit Ancoris who are are a Google Apps Authorised Reseller.

Organizing Your Work Well in Folders and Files for Maximum Efficiency

The importance of data cannot be overemphasized. We need to have the right data at the right time, at the right place to make informed decisions. We therefore need to manage the data and information that we have well and in a structured way, hence arrange files and folders in the most efficient and effective way.
The more we continue using computers, the more data is generated. Some questions like what to archive will arise. Archiving is storing data in a secondary location for future reference. The archived data should be accessible when needed. The decision to know what to have readily in our computers and what to archive should be made by you. You may however need to consult an expert in the area of the data you are handling to make that decision.
When you are handling files, it is good to organize them as you work with them. This may be when creating, updating, editing or duplicating the files. Create time to finish organizing them, otherwise you may spend more time figuring out where each of the file should be. You will also not have to browse through the information again, you may do this haphazardly and end up with the wrong file. It will also make you more organized in your time management and in keeping your house in order.
Do not create duplicate files with the same or very similar content. Unless it is a back up, this will make you have unnecessary files that you may not need. You will have control of the files by not necessarily depending on synchronization of files, especially while you are not updating your work remotely. Otherwise you may require to use synchronization features and cloud sharing tools to work on the same files at the same location. We will cover this extensively in another article.
Name your files and folders according to their content. Give them a relevant name that depicts what they are about. Implement a tree structure. You could have a folder name for a company, then subfolders for different sections. You can also create subfolders for each section. Each of the directories may contain files, according to the classification and content. This includes even the parent directory.
Remember to create a back up for all your work, because data is quite expensive. There are different media for storing backup. You may have a USB drive, external hard disk, or even remote backup. Remember to update your back up regularly, otherwise it won't be effective and up to date Take care of your data too. Prevent any unauthorized access to your information. This involves physical security, passwords access and general care while handling files. Data security is important, maintain integrity to ensure that only the right people get access to it.
Doktu Dee is the author of this article. He is well informed in http://ictsolutionshub.com. He has a lot of experience in ICT training, ERP development both at the student and corporate level. He is a practicing ICT consultant for 12 years. He has been involved in ERP development, systems support and networking. He is also an inbound internet marketer, he has developed, updated and maintained three SEO'd websites.