A reliable data backup solution should be a crucial component of any organizations computer network. Although many newer technically innovative backup solutions have emerged over the last few(5) years, tape backup solutions will still a viable option in today's computing environments. Tape backup provides the convenience of being readily available and portable. It also stores well long term in a controlled climate environment. Cartridge rotation is a key element of any comprehensive tape backup solution.
There are a few factors to consider before implementing a rotation schedule:
What is an acceptable restore and recovery time frame? Can you afford a day's worth of downtime or is the smallest recovery window possible a must. If the shortest time frame possible is required then consider running a full backup of all data at a minimum Monday through Friday schedule. If some leeway in the recovery time frame is acceptable then consider a combination full backup with corresponding differential or incremental backup jobs. An incremental backup will backup only the changed files since the last backup whereas the differential will backup all the files that have changed since the last full backup. Incremental provides shorter backup times but requires the full backup tape plus all the subsequent incremental tapes in the proper order to be able to complete a restore. The differential method only requires the full backup and the last differential.
If data retention needs are minimal then consider running a simple two week tape rotation utilizing ten to fourteen tapes. Ten tapes in a "Week One" and "Week Two" configuration would cover Monday through Friday if no one is available to swap out tapes on the weekend. To provide a more comprehensive coverage over a greater length of time consider implementing the following tape rotation.
* Two sets of Monday through Thursday tapes
* First through Fifth Friday designated tapes
* A month end or quarterly tape
* Year end tape
This rotation scheduled provides greater coverage and allows for recovery of data from throughout an entire years worth of backups. The year end tape could also be cycled out with a new tape every year for archiving. Off site rotation of the tapes in a safe and secure location should also be implemented in any tape backup strategy as a precaution to fire, natural disaster or other unexpected calamity.
Email is very important for your, many people can be used your email for fraud. so this tips to safety your email.
1."Gone Phishing?" Do not give your life away!
If you are not aware of what "phishing" is, the name should give you a hint. Except the "phish" that ends up taking the bait has to spend countless hours restoring their identity. The more bait they email out, the better their chances. It's a numbers game. The more people they spam, the better their chances are for collecting personal and credit card information. This is especially true with the eBay community.
2.Protect yourself against trojan "phishing". This phrase comes from a time of war where trojan warriors would send a large gift to their enemies in the form of a horse. Inside the horse would contain Trojan warriors. Once they were on the inside of the enemies walls, they would attack. With trojan "phishing" when you download an unsafe file or spyware, the trojan will install keylogging software. Key logging software records your every keystroke and sends it back to the hacker. Once it's on your computer, your antivirus software or firewalls become useless. Only download from trusted sites.
3. Do not respond to emails that ask you to go to their website and update your account information. These websites and emails will appear to be your real bank, PayPal, eBay accounts...etc. If you aren't sure on whether it's real or not, then go to the URL in your browser and actually type the website's address. Whatever you do, do not click the link and enter your information!
4. Be aware of the "feeling out" email that a fraudster first sends you.
This email has a simple subject describing their interest in purchasing any products or services you might be selling. In this email, they want to know if you accept certain types of credit cards and they want to know if you ship internationally.
5.Be cautious of emails that ask you to shop at their online stores if you've never heard of the company. Scammers are known to set up phony websites, collect orders and credit card information, and then disappear. Once again, if you are not sure, type the url of a known e-commerce website and look for similar products. You can also type the name of the business in Google and if they have scammed others, someone will have written about them.
6.If you are not sure on whether the email is a scam, you can always check the Ip Address in the email header for a perfect match. This will verify the country the email was sent from. To find the email header and the ip address of the sender, right click on the title of the spam email and select "options". The real ip address is usually listed at the bottom of the email header. Most of the time the information provided at the top of the email header is fake. When you locate the ip address enter it into one of the following internet registries:
APNIC (Asia Pacific network)
RIPE (European)
ARIN (American Registry)
LACNIC (South America & Caribbean)
If there are any discrepancies, then you can be pretty certain it is a scam
7. Be extremely cautious if the email involves the following scams: lottery scams, the 419, "Nigerian scams, multimedia piracy, investment and securities scams, chain letters, and illegally selling prescription drugs. These are on the rise on the internet.
JavaScript Support Comment ?
JavaScript supports a one-line comment with the double slash (//) marker so you can add comment to you javascript, which means that JavaScript doesn’t read anything on a line after // javascript can't not be run or progress. if you want to add comments for people to read throughout your code, and they won’t interrupt how your JavaScript runs. See the comment line added in bold in the following code:
A First Script
I want to add several line comment ?
In fact, JavaScript also supports a second type of comment or several comment, which you can
use for multiple lines. This comment starts with /* and ends with */. When
JavaScript sees /*, it ignores everything else until it sees */. Here’s an
example:
A First ScriptA First Script
now you can add comment in your javascript!!!
What Is SOAP ?
If you using ajax programing for devlop your application i recomendation are you using SOAP, SOAP is a simple XML (Extensible Markup Languagebased) protocol to let applications exchange information over HTTP.
Why Using SOAP ?
It is Very important for application develop to allow Internet communication between programs or client and server.
Ajax applications communicate using Remote Procedure Calls (RPC) between objects like DCOM and CORBA, but Hypertext Transfer Protocol HTTP was not designed for this. RPC represents a compatibility and security problem, firewalls and proxy servers will normally block this kind on your traffic.
SOAP is a better way to communicate between applications is over HTTP, because HTTP is supported by all Internet browsers and servers like firefox, IE, Opera etc. SOAP was created to accomplish this.
SOAP provides a way to communicate between applications running on different operating systems like windows and linux, with different platform and programming languages.
About SOAP ?
this web services stuff sounds pretty cool, but how does it work? Well, interestingly enough, it works in a similar fashion to your typical client/server relationship. You’re used to using a web browser to interact with a server in order to retrieve requested web pages. Web services works in quite a similar way; the only thing that changes is what constitutes a client and a server.
When a developer creates a web service, what he is actually doing is creating a set of functions that can be called remotely. The client code then connects to this URL and invokes one or more methods. Additionally, the client code can also get a list of the available functions (including details of the input parameters and returned data). For example, the PayPal SOAP (Simple Object Access Protocol) API provides a method you can execute called DoDirectPayment. If you ran a website that used PayPal to process customer transactions, you might call this method, passing in the customer’s details and credit card number. The PayPal web server would then return data, indicating the status of the transaction (such as whether it succeeded or failed).
SOAP is a protocol that allows remote procedures to be executed. All requests to and responses from a SOAP web service use XML. By using the SOAP library built into PHP, the requests can easily be generated and responses can easily be interpreted.
Although in this example the developer connects directly to a third-party API (i.e., PayPal’s API), in this chapter we are going to look at creating our own web service, as well as connecting to this service to use that data in a small Ajax application. There are several different standards available that can be used for web services—such as SOAP and REST (Representational State Transfer). We will be using SOAP in this chapter, and we will be using the SOAP library that comes with PHP 5.
Do you have Laptop hard disk drives are considered for smaller form factor, high performance and various reliability characteristics. The popular 2.5” hard disk drives come available with 9.5 mm height and most often with a blue circuit board. With such minimized size parameters, these hard disks perform a major role in Laptop computing. But if exposed to factors like external shocks, extensive heat, wear and tear and others, these hard drives can get damaged and might prevent you from accessing stored information. You should replace such damaged Toshiba hard drives and restore from the recent data backup available. Data backup might not offer required data restoration in some cases (for instance, if data backup is not updated). Thus, to recover from such situations, you will need to call Laptop Data Recovery service for extracting lost data from physically crashed Laptop hard disk.
Laptop hard disk drive might exhibit following symptoms if get failed:
1)Before your power up the system, you observe that unexpected whining and clicking sounds from Laptop casing, which is otherwise not audible
2)You observe sounds as if motor is attempting to spin up many times
3)A failing Laptop hard disk drive shows peculiar performance degradation
4)You observe Laptop hard disk drive completely dead with no sound and movement
Note: You are recommended to immediately power off your Laptop and not to open its casing, freezing or kicking the hard disk drive. Performing such activities might introduce more damages to the hard drive and data.
Laptop hard drive failed due to physical crashes are required to be dealt using professional Laptop Recovery techniques, provided through Data Recovery Services. These failed hard drives are opened in safe Clean Rooms surroundings to prevent entering dust particles. Laptop Data Recovery service is provided by different data recovery companies, equipped with suitable inventory, recovery technicians, advanced tools and most importantly, Clean Rooms. The recovery technicians carry out steps, like replacing damaged Laptop hard disk internals, disk imaging, shifting hard disk platters and more.