The most valuable items on your computer are your personal documents, photographs, music, videos and e-mails. Software can be reloaded and hardware can be replaced, but your personal files are irreplaceable. All of your data is stored on your computer hard disk and hard disks are prone to failure, so it is essential that you back-up your data on a regular basis.The safest method of protecting your data is to back-up your files regularly and store a copy of the data off-site. |
Types of back-up devices |
USB memory stick Advantages: Small light, easily transportable and can be stored off-site. Disadvantages: Limited capacity and you have to remember to back-up. |
External hard disk Advantages: Very large capacity and can be stored off-site. Disadvantages: May need external power supply, must be handled with care and you have to remember to back-up. |
On-line back-up Advantages: Very large capacity and data is stored off-site. Disadvantages: You will usually have to pay a third-party for this facility and because the data is backed-up via your broadband it is very slow. |
Internal RAID type 1 disks Advantages: Very large capacity, fast, data is backed-up automatically so you don't have to manually back-up and this method also creates a copy of your software and operating system. Disadvantages: You need a minimum of 2 hard disks in your computer. |
Internal secondary hard disk Advantages: Very large capacity, fast, you can choose to back-up manually or use a third-party back-up or synchronisation software to automatically back-up your data. Disadvantages: You need a minimum of 2 hard disks in your computer. |