Knowing the difference between CD / DVD-R + R RW

If we ever buy a CD / DVD blank (empty) or never to save data (burn) to CD / DVDs, we sometimes see there are several types of CD / DVDs that are different, such as CD / DVD-R + R or RW. What do you mean minus and plus signs and the differences of each type of these pieces? Then where should type when we want to use it?

Before discussing about the types of DVDs or CDs, however, here are some common terms related to this case that we should understand it well.

• Burning, namely the process of storing data to media / disk copies. Called the burning, because we burn (write bits of data) layer in the disk with laser light.
• Session, a period of time when something happens, here is the files were added on the disk in a single operation
• Single Session, All files on the disk is added in a single operation
• Multi-Session, a Session on the disk

In addition there is the term ROM (such as CD-ROMs), which stands for Read Only Memory (read only memory), means that information stored on the disk can only be read only.

What is the difference-R + R and RW?
As in almost all CD / DVD writer can write and read all kinds of DVD formats. It is characterized by the existence of a DVD ± RW logo. So if there is the logo, should have no problem when we select the type-R or + R. Regarding the explanation of this sign as follows:

• R: the 'R' stands for Recordable own. Here, the disk can be used to store data and vice versa if there is no sign of R, then could not save.
• -R: Minus sign either a CD / DVD disk is a single session. It means we can not add other data, if already in use, although there are still remaining storage. Sometimes there are storage media that can do Multi-session on the disk type R, but the results are not all the media is able to read, sometimes only the first session is unreadable or absent altogether.
• + R: Alert Plus is intended for Multisession, meaning we can use that empty space is still available on disk. Each new session can be added at an existing session or create a new session. As a bonus, when the new session is stored, can be ordered to "remove" the old session. Delete it means ordering a media player to disregard the contents of the data.
• RW: stands for rewritable, meaning that this disk using special material so that data can be deleted later used to store new data or can also be stacked with other data. There are certain restrictions on how much (time) data deletion can be done.

Also DVD + R has several advantages, such as more accurate at higher speeds than DVD-R, then also a better error management, and the results of burning (storage) data have smaller levels of damage.
See the difference above, then the DVD + R has advantages over DVD-R, so the price is usually more expensive and has several advantages. But since the first DVD-R is present (5 years) than the DVD + R, then this format is frequently used sometimes (more support to the older media player).