Although all duplicators available on the market can do direct reader to writers duplication, there are disadvantages of doing so, namely, the reader will wear out faster and the data transfer is less reliable. Imaging if you had to burn 500 CDs from a 1-to-7 duplicator, the reader will have to read 72 times. The more the reader reads, the faster the optical head ages. As the laser head ages, it will be more difficult for the reader to read data from the CD master. One common problem found on desktop PC is that for the same CD it could be read on one computer but not on other. That is probably caused by the aging laser head that fails to read data. Although a CD-ROM reader is very inexpensive now but changing one can be a daunting job for non-technical personnel. The solution to this is to store the CD masters on an internal hard drive. This way the reader will only need to read once and the data transfer from a hard drive to the writer is much more reliable.One X for CD is 150KB per second. So for a fully loaded CD-ROM with 650MB, it will take about 87 seconds for a 52X writer to complete the burning. The formula is 650 x 1024 ÷ 150 ÷ 52 = 87. As far as DVD, one X represents 1380KB/sec. With this rate, a fully-loaded DVD master with 4.7GB will require about 893 seconds (about 15 minutes) for a 4X writer to complete the burning. Again, the formula is 4.7 x 1024 x 1024 ÷ 1380 ÷ 4 = 892.8. The actual time will be longer because of the lead-in and lead-out. On the other hand, most of the time the master is not fully loaded so the numbers above are the extreme cases. Your burning time will be the function of how full the master is and what type of media you are using. Some media, although advertised for certain speed, may not be able to attain the rates it was advertised and the duplicator will try to burn at lower speed to ensure the integrity.Although making a duplicator to crack the copyright protection scheme isn’t really difficult from the technical point of view, most duplicator manufacturers, including New Cyberian Systems, Inc. do respect the hard work of the content authors or owners. If you try to copy copyright protected CDs or DVD’s, the duplicator will most likely complain. Even there is no copyright protection on most masters, you should be aware of the consequence of potentially breaking the copyright laws.






