FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The direct changeover method is the fastest way of switching from one system to another. This changeover method is risky because if the new system fails, there is no fallback. The changeover is very fast and that’s where the name ‘direct’ comes from. The fastest way of changing from one system to another.

Detailed explanation-2: -Direct changeover: There’s a single, fixed point where one system stops being used and the new one becomes live. This is the cheapest, quickest and easiest form of system changeover but is also the riskiest – if the system is broken or inefficient, the whole organisation suffers.

Detailed explanation-3: -In a parallel changeover, the new system runs simultaneously with the old for a given period of time. Of all the techniques, this tends to be the most popular, mainly because it carries the lowest risk.

Detailed explanation-4: -The main system changeover methods are the parallel, direct, pilot, and phased changeovers. They are implemented differently depending on the organization’s situation. Each strategy has its advantages and disadvantages.

Detailed explanation-5: -Direct Cutover The direct cutover approach causes the changeover from the old system to the new system to occur immediately when the new system becomes operational. Direct cutover usually is the least expensive changeover method because the IT group has to operate and maintain only one system at a time.