Rachel explains the best methods of backing up and sharing your data.
USB flash drive
Also known as a USB stick or a flash drive, this small device plugs into one of the USB ports on your computer. They are small (some are only half the length of an adult’s thumb) and are rewriteable. You can add and delete files without writing over all the data on the drive as many times as you like. USB drives have become so affordable that they can now be used to share data with friends, as you can buy packets of three 4Mb flash drives for as little as $6. The largest publically available flash drive in the world at the moment holds 1Tb of data – 1000 Gb, or twice the capacity of the average laptop. They do, however, come in more reasonable sizes. You can find an 8Gb flash drive (enough to hold quite a bit of video) at any computer or stationary store for less than $10.
According to SanDisk, one of the more reputable manufacturers of USB flash drives, the life of a flash drive should be 10 years if you put data on it once and then leave it alone somewhere it is unlikely to be damaged. If you write data onto it over and over again the lifespan will decrease.
External hard disk drive
The ‘external’ part of the name ‘external hard disk drive’ refers to the fact that your computer has a hard disk drive inside it. External hard disk drives, or external HDDs, are similar to what you would find inside your computer, except that they have their own casing and connect to your computer via a USB cable. Of all the readily available data-storage options, external HDDs hold the most information. It is easy to get a 1Tb or two 2Tb external HDD (although they’re not cheap), and they are the best option if you wish to back up a lot of information, or even your whole computer. There are two types of external HDD.
Portable external hard drives do not require an external power source – instead they draw power from your computer via the USB cable. They are often more compact, which is a plus. The downside is they can take longer to transfer files to or from. Because you tend to carry them around they can also be less reliable, as they are more likely to get knocked around in your bag. These are useful if you want to back your computer up while travelling, or to store photos separately to your computer.
Standard external hard drives come with both a USB cable and power cable. These external HDDs need to be plugged into a power point as well as your computer, as they need an external power source. They run faster than a portable HDD, but they are often bulkier and are better left in one place.
- CDs – Good for sharing photos with friends. Have multiple backup copies if storing important information, and replace every five to ten years.
- DVDs – Good for storing and sharing video. Have multiple backup copies if storing important information, such as family home videos.
- USB flash drives – Good for keeping on your key ring to transfer files between computers on the go. Can store large files quite cheaply. Keep multiple copies and only use sparingly if intending to store information for long periods of time.
- External HDDs – Good for backing up your whole computer, or storing many large files. Portable HDDs are easier to carry around, but less reliable.
What do you use to back up your data? Have you had problems or success with any of the methods we have talked about?
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