Data backups are part of our digital lives (or at least they should be). The question is... "How long does it take to do a backup?" Before I answer this, a quick explanation - many backups are done via USB nowadays, as can be seen by the myriad of USB backup drives that are available and with sizes varying anywhere from 1GigaByte (1GB = 1000MB) up to 1 Terabyte (1TB = 1000GB). With USB there are 2 types USB1 and USB2. If you have a PC (or MAC) that has a USB1 connection, the maximum speed you can achieve, theoretically, is about 25MB/s. USB2 gives a better rate at 50MB/s. Though this is so, just like a car that accelerates from standing to max speed - it takes a little time for the speed to reach it's peak i.e. it does not start at 50MB/s straightaway, thats why an 3MB music or MP3 file still takes a few seconds to transfer to your USB device. Theoretically speaking, at 50MB/s you can transfer 3000MB/minute (2.9GB/Min) or 180000 MB/hour (175GB/hour). The reason wh