First, some definitions
CD-Recordable, or CD-R
Using this method involving generating Compact disks utilizes a desktop recorder to place a pre-mastered picture on a dvd with a polymer bonded absorb dyes stratum, employing a laser to help burn off the information in the absorb dyes. Recorders are offered which just work at single velocity (76 minutes with regard to 650MB involving files or maybe 74 minutes involving audio/video which includes time and energy to record leadout), 2x, 4x in addition to 6x. 2x devices are usually the most prevalent, requiring 39 minutes to get a whole 650MB disc..
(tab CD replication}
This is the process of making a glass master from a pre-mastered image, creating stampers from the master, then pressing discs with the stamper using injection molding. Once the stamper is made and the machine is set up, a disc can be produced in a matter of seconds.
Duplication
Duplication produces many copies of a disc at once. Duplicators use CD-R media, and usually a bank of recorders controlled by a single processor. The number of recorders that can be in a single array is limited by SCSI protocols, and usually cannot exceed 17 plus one reader for the source material.
Replication requirements
Time
At least two days, usually more, up to weeks or even months is needed for creating master, stampers and scheduling press runs. Don't forget to include shipping time to and from the plant as well, and if they have to send the premaster to another facility to have the master made, that can add hours or even days to the turnaround time.
Coordination
Everything must be delivered to the replication plant together up front-label artwork, packaging, premaster.
Quantity
Mass replication is generally unavailable for short runs (less than 100-300, sometimes 500) because of the setup requirements. Every time an injection molding machine is stopped, some materials and time are lost, so manufacturers prefer to do large runs so the unit cost for small runs will be higher. Also, during a busy season many replicators do not like to schedule small runs at all because large runs are more profitable and less trouble for them. Some replicators will contract for a small number of discs, but actually charge for a minimum number and throw away the excess.
However, when large numbers of discs are required, replication is certainly the most cost-effective solution, with unit costs as low as $1.50 including mastering for large quantities on long turnaround times.