Hot Sites: Low Cost, Slow Recovery
Backup and disaster recovery for the IBM iSeries using hot sites is an inexpensive recovery solution in which a duplicate data site is established remotely. In the event of a disaster, the business is manually restored with backup tapes that are stored remotely, perhaps at multiple locations and sometimes unsecured.
• Advantage: Low cost
• Disadvantages: Risk of lost or damaged tapes, IT staff required to travel to hot site for restore, potential for human error when restoring, long recovery times that result in business downtime.
High Availability: Larger Investment, More Complexity
High availability offers the fastest recovery of the IBM iSeries with minimal to no downtime, for the highest guarantee of business continuity. By creating a duplicate site that replicates data in real time to a remote facility over a dedicated connection, high availability can get a business back online within minutes in the event of disaster. Unless a business has a compliance or operational need for near-100 percent uptime, the high cost of high availability may not be necessary.
• Advantages: Fastest recovery, protection of data and applications, disk-based storage that preserves data integrity, remote backup and recovery that eliminates need for IT staff travel to backup facility
• Disadvantages: Larger investment, required investment in hardware and software, requires ongoing IT management
Saturday, June 26, 2010
Friday, June 25, 2010
Best Practices to Enhance Web Performance
When it comes to page load time, how do web masters profile a web page? What are the different components that need to be observed in order to get a page load time to be at its minimum? What are the best practices that you follow to arrive at an optimum website performance? There are some best practices that need to be followed at each stage of the website development cycle.
This needs to be taken into account, be it a new site you are developing or could be a you are just upgrading an old site to enhance website performance. There need to be focus on details and specifics during website development. The attention to detail can help enhance user experience and finally on business benefits viz., customers. Website needs to be developed keeping in focus the following things: User experience, search engine crawl-ability, website applications and user interface, website availability, use of scripts, etc.
Some of the essentials that need to be looked at are reducing page load time, resolving DNS names, TCP connection setup, resource downloads and downloads from cache. Executing scripts, etc. The above are some of the steps that will go through in a page, but page load time needs to be evaluated on how well your page will perform along these functions together and eliminates or performs all these functions in parallel and still manages to load in the specified load time.
There are definitely methods to achieve this, which I will be adding into my next post in detail. Once the development is done, we will need to monitor website to check for performance and improvise on the same with the help of website monitoring services.
This needs to be taken into account, be it a new site you are developing or could be a you are just upgrading an old site to enhance website performance. There need to be focus on details and specifics during website development. The attention to detail can help enhance user experience and finally on business benefits viz., customers. Website needs to be developed keeping in focus the following things: User experience, search engine crawl-ability, website applications and user interface, website availability, use of scripts, etc.
Some of the essentials that need to be looked at are reducing page load time, resolving DNS names, TCP connection setup, resource downloads and downloads from cache. Executing scripts, etc. The above are some of the steps that will go through in a page, but page load time needs to be evaluated on how well your page will perform along these functions together and eliminates or performs all these functions in parallel and still manages to load in the specified load time.
There are definitely methods to achieve this, which I will be adding into my next post in detail. Once the development is done, we will need to monitor website to check for performance and improvise on the same with the help of website monitoring services.
Best Practices to Enhance Web Performance
When it comes to page load time, how do web masters profile a web page? What are the different components that need to be observed in order to get a page load time to be at its minimum? What are the best practices that you follow to arrive at an optimum website performance? There are some best practices that need to be followed at each stage of the website development cycle.
This needs to be taken into account, be it a new site you are developing or could be a you are just upgrading an old site to enhance website performance. There need to be focus on details and specifics during website development. The attention to detail can help enhance user experience and finally on business benefits viz., customers. Website needs to be developed keeping in focus the following things: User experience, search engine crawl-ability, website applications and user interface, website availability, use of scripts, etc.
Some of the essentials that need to be looked at are reducing page load time, resolving DNS names, TCP connection setup, resource downloads and downloads from cache. Executing scripts, etc. The above are some of the steps that will go through in a page, but page load time needs to be evaluated on how well your page will perform along these functions together and eliminates or performs all these functions in parallel and still manages to load in the specified load time.
There are definitely methods to achieve this, which I will be adding into my next post in detail. Once the development is done, we will need to monitor website to check for performance and improvise on the same with the help of website monitoring services.
This needs to be taken into account, be it a new site you are developing or could be a you are just upgrading an old site to enhance website performance. There need to be focus on details and specifics during website development. The attention to detail can help enhance user experience and finally on business benefits viz., customers. Website needs to be developed keeping in focus the following things: User experience, search engine crawl-ability, website applications and user interface, website availability, use of scripts, etc.
Some of the essentials that need to be looked at are reducing page load time, resolving DNS names, TCP connection setup, resource downloads and downloads from cache. Executing scripts, etc. The above are some of the steps that will go through in a page, but page load time needs to be evaluated on how well your page will perform along these functions together and eliminates or performs all these functions in parallel and still manages to load in the specified load time.
There are definitely methods to achieve this, which I will be adding into my next post in detail. Once the development is done, we will need to monitor website to check for performance and improvise on the same with the help of website monitoring services.
Dental Software - The Future is Coming
Today: The patient signs in then fills out a form on a clipboard and the staff enters the information.
Future: A patient enters the dental office and immediately the PDA (personal digital assistant; that is a combination handheld computer, cell phone, web browser, camera, music video player and GPS) in their pocket or purse connects with the dental software system in the office using a wireless connection. This alerts the dental office the patient is there and also instantly updates all personal information such as address, insurance, or changes in family status.
Today: The patient fills out a medical history on paper on the clipboard. Hopefully they can remember everything.
Future: The patient's health history is accessed from the national data base and an artificial intelligence (AI) program analyses the information and sends back a condensed report with specific conditions noted and a series of interview questions to ask the patient and appropriate measures stipulated for dental procedures.
Today: The dentist with the help of an assistant gathers diagnostic information; he/she sticks the teeth with an explorer, observes the tissue, probes the sulcus, palpates, looks for red or white lesions, checks the bite with carbon paper, takes radiographs and fills the patient's mouth with goo to make a study model.
The dentist then makes a diagnosis based on his/her subjective evaluations of how things looked or felt compared to some personal norm based on training and experience.
Future: All diagnostic information is collected in a few minutes using two digital scanning devices. A cone beam like device does two rapid radiographic scans of the head one with the teeth occluded and another as the patient opens wide. The second device goes in the mouth and does scans with different types of light. This intraoral scan picks up changes in temperature indicating inflammation; it detects bacterial fluorescence indicating the effectiveness of home care and carious activity. It detects calculus. It evaluates translucence. It detects changes in the epithelium that indicate cancer or other changes.
This digital information isn't seen by the dentist but is examined by the dental software. Once the data is collected the software using artificial intelligence compares all the findings to a gigantic data base. The data base and the diagnostic software are not in the dental office but stored on enormous secure servers the dentist can access through the Internet. The data base has a huge range of both normal and pathological findings. Based on this the software provides a differential diagnosis, a very accurate probability of diagnostic accuracy and a course of treatment.
The software displays a 3D image of the mouth, the hard and soft tissue, even facial features. The dentist can manipulate the image in space to observe from all sides and even watch the TMJ move through an opening sequence. The software can zoom in to display a single tooth, highlight a lesion or show bacterial plaque.
Future: A patient enters the dental office and immediately the PDA (personal digital assistant; that is a combination handheld computer, cell phone, web browser, camera, music video player and GPS) in their pocket or purse connects with the dental software system in the office using a wireless connection. This alerts the dental office the patient is there and also instantly updates all personal information such as address, insurance, or changes in family status.
Today: The patient fills out a medical history on paper on the clipboard. Hopefully they can remember everything.
Future: The patient's health history is accessed from the national data base and an artificial intelligence (AI) program analyses the information and sends back a condensed report with specific conditions noted and a series of interview questions to ask the patient and appropriate measures stipulated for dental procedures.
Today: The dentist with the help of an assistant gathers diagnostic information; he/she sticks the teeth with an explorer, observes the tissue, probes the sulcus, palpates, looks for red or white lesions, checks the bite with carbon paper, takes radiographs and fills the patient's mouth with goo to make a study model.
The dentist then makes a diagnosis based on his/her subjective evaluations of how things looked or felt compared to some personal norm based on training and experience.
Future: All diagnostic information is collected in a few minutes using two digital scanning devices. A cone beam like device does two rapid radiographic scans of the head one with the teeth occluded and another as the patient opens wide. The second device goes in the mouth and does scans with different types of light. This intraoral scan picks up changes in temperature indicating inflammation; it detects bacterial fluorescence indicating the effectiveness of home care and carious activity. It detects calculus. It evaluates translucence. It detects changes in the epithelium that indicate cancer or other changes.
This digital information isn't seen by the dentist but is examined by the dental software. Once the data is collected the software using artificial intelligence compares all the findings to a gigantic data base. The data base and the diagnostic software are not in the dental office but stored on enormous secure servers the dentist can access through the Internet. The data base has a huge range of both normal and pathological findings. Based on this the software provides a differential diagnosis, a very accurate probability of diagnostic accuracy and a course of treatment.
The software displays a 3D image of the mouth, the hard and soft tissue, even facial features. The dentist can manipulate the image in space to observe from all sides and even watch the TMJ move through an opening sequence. The software can zoom in to display a single tooth, highlight a lesion or show bacterial plaque.
Wednesday, June 23, 2010
Difference Between Pentium Core 2 Duo & Dual Core
Core 2 Duo & Pentium dual core are the same? No. They are not the same.
The Pentium dual core are "two" cores but they are now if, if we call virtual because they are two nucleus but not physical if not the architecture of the Pentium dual core is still derives from the 4 and the Celeron Pentium
The core 2 duo, if you have two physical processors and their architecture is 90.65 and 45 nm ( nanometers ) are more under 2mb cache up to 8 or 12mb on the second level the dual core have 1 or 2 mb on one level.
The core 2 duo is the second generation processors that have Intel processors and are generally characterized by 64-bit support, unlike other processors Intel chips like the Pentium, which are 32 bits.
So also when sharing tasks in the system passes the dual core a 30 % improvement over the Pentium 4 and core 2 duo 60 to 70% compared to those processors
One might also think it is the same speed as a 3.6GHz Pentium 4 to a core 2 duo 1.8 Ghz since each core runs at 1.8 GHz * 2 = 3.6?
Then again no, because the rate varies by giving different orders to each processor and the p4 must receive all on a single processor.
I hope the guide helps someone according to their needs to allow to use your money more wisely and remember as a council do not spend all your money on the processor to change to neglect the other components of the PC because it will get little benefit.
The Pentium dual core are "two" cores but they are now if, if we call virtual because they are two nucleus but not physical if not the architecture of the Pentium dual core is still derives from the 4 and the Celeron Pentium
The core 2 duo, if you have two physical processors and their architecture is 90.65 and 45 nm ( nanometers ) are more under 2mb cache up to 8 or 12mb on the second level the dual core have 1 or 2 mb on one level.
The core 2 duo is the second generation processors that have Intel processors and are generally characterized by 64-bit support, unlike other processors Intel chips like the Pentium, which are 32 bits.
So also when sharing tasks in the system passes the dual core a 30 % improvement over the Pentium 4 and core 2 duo 60 to 70% compared to those processors
One might also think it is the same speed as a 3.6GHz Pentium 4 to a core 2 duo 1.8 Ghz since each core runs at 1.8 GHz * 2 = 3.6?
Then again no, because the rate varies by giving different orders to each processor and the p4 must receive all on a single processor.
I hope the guide helps someone according to their needs to allow to use your money more wisely and remember as a council do not spend all your money on the processor to change to neglect the other components of the PC because it will get little benefit.
The Best 5 USB Flash Drive Uses
The most common use for a USB jump drive is the transferring of files. However, there are hundreds of additional tasks for these handy little devices. I have listed 5 of my favorite, and in many cases, unknown tasks for my USB flash drives.
Take Your Programs With You
Guaranteed, flash drives are great for storing files, but did you know you can run portable applications from flash drives as well? A free business suite, OpenOffice includes a word processing program, a PowerPoint application, a spreadsheet program and even a database... and there is a portable version. Firefox, Opera and Thunderbird all have portable versions of their web browsers that can be downloaded and run from your flash drive. With the combination of programs like OpenOffice and Firefox, you have the ability to work, write, create, and surf the web all in the pocket of your pants.
You should also search for Portable Apps for other applications that you can install on your USB drive. Packages are available to download and install that include such things as audio players, games, and antivirus - all with a handy menu system.
Transfer your Files and Use it as an MP3 Player
Well, we just couldn't write an article about flash drives and not mention the obvious. The most common use for your flash drive is for the transferring of files. Wouldn't you like to also use your flash drive as an MP3 player? Have your built-in multimedia program(Windows Media Play or iTunes) play your MP3 files that you store on your jump drive.You can take advantage of Windows Media Player's playback features to customize your experience. And with using your computer, you don't have to be concerned with your MP3 battery going dead.
Boot Up Your Operating System
Want to do some really cool stuff with your flash drive, try booting an entire OS from your jump drive. While Linux is more commonly used for this type of adventure, you can also boot Windows.
Luckily, there are plenty of tutorials on how to boot an OS from your USB thumb drive online.
Use Your USB to Connect to a Wireless Network
You have a wireless network right? You can store your wireless network settings on your flash drive so you never have to remember them or pass your login credentials around when you want to temporarily add a computer to your network. With the information, you can use your USB drive to quickly and effortlessly connect another computer or WCN-compatible device to your internet. Find more information about WCN by going to the help and support located in the start menu.
Always Use Protection
Use your USB thumb drive as a password reset disk; a handy tool if you forget the password to a user account that is not part of a domain. A tough situation to be in, but not if you have your flash drive with the info, reset your password, and can get back to work. Windows Vista will allow you to use a USB thumb drive rather than a floppy disk as a password reset disk.
Since you like to stay protected, use your USB thumb drive to transport sensitive data - one like the Rohos Mini Drive that can safeguard your data. With this type of device, you can create a secret partition on the drive, password protect it and any documents you copy to that partition using the file manager.
Take Your Programs With You
Guaranteed, flash drives are great for storing files, but did you know you can run portable applications from flash drives as well? A free business suite, OpenOffice includes a word processing program, a PowerPoint application, a spreadsheet program and even a database... and there is a portable version. Firefox, Opera and Thunderbird all have portable versions of their web browsers that can be downloaded and run from your flash drive. With the combination of programs like OpenOffice and Firefox, you have the ability to work, write, create, and surf the web all in the pocket of your pants.
You should also search for Portable Apps for other applications that you can install on your USB drive. Packages are available to download and install that include such things as audio players, games, and antivirus - all with a handy menu system.
Transfer your Files and Use it as an MP3 Player
Well, we just couldn't write an article about flash drives and not mention the obvious. The most common use for your flash drive is for the transferring of files. Wouldn't you like to also use your flash drive as an MP3 player? Have your built-in multimedia program(Windows Media Play or iTunes) play your MP3 files that you store on your jump drive.You can take advantage of Windows Media Player's playback features to customize your experience. And with using your computer, you don't have to be concerned with your MP3 battery going dead.
Boot Up Your Operating System
Want to do some really cool stuff with your flash drive, try booting an entire OS from your jump drive. While Linux is more commonly used for this type of adventure, you can also boot Windows.
Luckily, there are plenty of tutorials on how to boot an OS from your USB thumb drive online.
Use Your USB to Connect to a Wireless Network
You have a wireless network right? You can store your wireless network settings on your flash drive so you never have to remember them or pass your login credentials around when you want to temporarily add a computer to your network. With the information, you can use your USB drive to quickly and effortlessly connect another computer or WCN-compatible device to your internet. Find more information about WCN by going to the help and support located in the start menu.
Always Use Protection
Use your USB thumb drive as a password reset disk; a handy tool if you forget the password to a user account that is not part of a domain. A tough situation to be in, but not if you have your flash drive with the info, reset your password, and can get back to work. Windows Vista will allow you to use a USB thumb drive rather than a floppy disk as a password reset disk.
Since you like to stay protected, use your USB thumb drive to transport sensitive data - one like the Rohos Mini Drive that can safeguard your data. With this type of device, you can create a secret partition on the drive, password protect it and any documents you copy to that partition using the file manager.
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