At least once a week,but once a day isn't excessive.
never , internet can provide again data , of all kind
A separate disk drive is the easiest way for an individual to back data on a hard drive. However, it is also possible to use cloud services such as Dropbox, CrashPlan or Amazon S3 to back up your data, or Apple's Time Machine software if you are a Mac user.
There is always a risk for doing something to your Hard Drive, You should back up your Data!
External hard drives can use data from an internal hard drive as often as you'd like. To do this, you must have backup software installed on each drive that will allow you to back up the drive when necessary, even if you are not in front of your computer.
How often it changes, your ability to reconstruct data in case of a casualty, the cost of backups vs. rebuilding the data and the overall importance of the data.
well yes because it has a chip that fits
backing up an entire hard drive is difficult...so much data to back up...
Take the Back up from UPS and get the data
I hate to break it to you, but formatting a drive completely erases all data. There is a chance you can get your data back with a tool like http://www.ptdd.com/datarecovery/format-drive-recovery.htm
cd-roms
Storage back-up is where data stored on the computer is transferred to a disk or another drive, in case the data on the computer is lost.
hard drive head crash