Teracopy utility is designed for a person that needs a quick, reliable, fast solution to copy a big sum of data. It has a buffer of between 1 - 20Mb in order to reduce time of the copy. It gives you the option to stop the whole procedure with one click and resume it later. Also describes in details every problem that occures and the stage that its in every moment. With this way the copy procedure doesnt fails and you have got the option to repeat it later on. You can replace the commands copy and move with this utility without changing your workspace.

I downloaded this utility that Codesector offers for free and try it in a new hard drive that i bought. I needed this reliability when i was infront of 500Gb that need transfer from a drive to another. You can see below that this utility is more simplier than i thought:

It offers as it points out in its website for free:

• Copy files faster. TeraCopy uses dynamically adjusted buffers to reduce seek times. Asynchronous copy speeds up file transfer between two physical hard drives.
• Pause and resume file transfers. Pause copy process at any time to free up system resources and continue with a single click.
• Error recovery. In case of copy error, TeraCopy will try several times and in the worse case just skips the file, not terminating the entire transfer.
• Interactive file list. TeraCopy shows failed file transfers and lets you fix the problem and recopy only problem files.
• Shell integration. TeraCopy can completely replace Explorer copy and move functions, allowing you work with files as usual.
• Full Unicode support.

I strongly recommended it if you need to copy a large sum of data. You can download it here.