Power Usage

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Power Problems

Explain the need to save power ? Or
What are the power related problems ?

• Power is a huge concern for businesses.
• Even beyond saving the planet and saving money, we need to save power, because at some point, we may not have enough power to run our equipment Power is a huge issue for businesses.
• Power is not cheap. Data Centers use a lot of power. U.S. data-center power consumption totaled 45 billion kilowatt (kW) hours in 2005. The entire world used 123 billion kW hours in 2005.
• Businesses spent between 4 and 10 percent of their IT budgets on energy.
• According to a study by Gartner, 50 percent of data centers said they will have insufficient power and cooling capacity by 2008 Gartner, November 2006
• So, the need of the hour is to reduce power use wherever you can. It is not just for the planet. It's not just to save some money. It's for the sake of your business,
• There are various changes you can make in your organization to save power. Some changes are big much as installing new servers) whereas others are small (such as changing the desktop color of your monitors).
• For your own organisation, you can compute savings by plugging in how much your IT department spends and then doing a rough estimate with the numbers in this image.

Monitoring Power Usage

How the power monitoring software results helps in power consumption?

• Obviously, the server room is not the only place where power gets used. Your whole organisation uses power, all the time. The place to start is with an overall assessment of the power you use.
• As you are an IT professional, you are likely only interested in the computers and network infrastructure, but you can take this task to whatever level of granularity you choose.
• For instance, although reducing server power draws and minimizing PC power usage seem obvious, you might decide to implement a plan where lighting automatically turns or You could get as small as directing laptop and cellular phone users to disconnect their chargers from the wall when they are not using them. Although there is no device plugged into the charger, the charger till sips at the electrical current
• Let's talk about how your organization can study its power usage.
• You should consider the costs involved with doing the testing yourself and what it would coat to contract out the project. There is no shame in hiring a professional to do the heavy lifting. They are trained and experienced in this type of work and can give you the results you want more quickly than you are likely able to do on your own although you can certainly do it on your own

Servers

• To monitor power consumption yourself, you need to use power-monitoring software
• Without knowledge of where you are starting, it is impossible to tell how much of a problem you have and to what degree your fixes are helping.
• Several vendors offer tools that help monitor datacenter power.
• For instance, IBM is power executive provides the tools needed to monitor and manage power consumption accurately It can measure real-time power consumption and heat emission by individual server, server group location. It allows for the optimization of energy use and the lowering of power consumption when low utilization can provide cost savings. These power monitoring and management capabilities are an important tool in achieving energy efficiency in the datacenter.
• With the results, you get from your study, you should be able to do the following:

1.Understand the datacenter thermal traits
2.Locate overlapping areas of cooling capacity. This helps because it shows where you can place high-density or mission-critical equipment because of its ideal cooling location.
3.Consider what ifs" with the placement of the datacenter

Low Cost Options

List and explain the various low-cost solutions for checking power on your workstations and standalone devices ?

• Low-Cost Options : There are also some very low-cost solutions for checking power on your workstations and standalone devices
• Kill A Watt: The Kill A Watt device is US $25 product that you plug into all and then plug your computer or monitor into the device. The result is that it will show you how much power your device is using.
• True, it is not really practical in an environment with hundreds of workstations to run around and plug in this device. However, assuming all the devices settings are the same (or similar), you can measure a couple workstations and make some easy (and inexpensive) assumptions about power sage.

1. Calculator 

  Tech republic offers a free worksheet to help you determine various coasts for monitor power.

It allows you to do the following:

• Determine how much you spend on electricity to power your existing monitors.
• Compare new LCD and CRT monitors to determine which option is less expensive.
• Compare different models of the same type of monitor to determine which one carries the lowest total cost, when power is considered.
• Compare the same monitor under two different operating scenarios. For example, see how much cost savings you could achieve by implementing a monitor sleep mode instead of leaving it running at full power when not in use.

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