Blue-Ray disc version ?

[doctor-z]

I found this article in wikipedia: http://en.wikipedia.org/wiki/Blu-ray_Disc_recordable but I cannot understand, version 1 of BD-RE is single layer, version 2 is dual layer? Version 4 is definitely BD-RE X layer but the first 3 versions what type are they? In other words what version is BD-RE dual layer? Is it version 2 or 3? Single layer what version?

[LIGHTNING UK!]

BD Disc Information (L0):

Disc ID: MEI-T01-001

Disc Type: BD-RE

Disc Size: 120mm

Disc Class: 0

Disc Version: 2

Disc Time Stamp: 12/2005

Number of Layers: 2

Layer Type: Rewritable

DVD Layer Present: No

CD Layer Present: No

Channel Bit Length: 74.5nm (25GB Per Layer)

BCA Present: Yes

Maximum Transfer Rate: Not Specified

First PAA of Data Zone: 131,072

Last PAA of Data Zone: 1,658,494

[doctor-z]

What exactly your post means? You have a version 2 BD-RE DL disc but are all BD-RE DL discs version 2?

[Adrianvdh]

To my understanding (AFAIK), Blu-ray Discs have 4 versions and can have up to 4 layers.

 

Version 1 = 25GB Single layer disc.

Version 3 = 25GB x2 Double layer disc.

Version 1 = 20GB~ x3 Triple layer disc.

Version 1 = 20-30GB~ x4 Quadruple layer disc.

 

But I could be wrong

[doctor-z]

To my understanding (AFAIK), Blu-ray Discs have 4 versions and can have up to 4 layers.

 

Version 1 = 25GB Single layer disc.

Version 3 = 25GB x2 Double layer disc.

Version 1 = 20GB~ x3 Triple layer disc.

Version 1 = 20-30GB~ x4 Quadruple layer disc.

 

But I could be wrong

Do you want to say:

Version 1 = 25GB Single layer disc.

Version 2 = 25GB x2 Double layer disc.

Version 3 = 20GB~ x3 Triple layer disc.

Version 4 = 20-30GB~ x4 Quadruple layer disc.  ????

Do not forget that version 1 of BD-RE was not computer compatible, so version 2 and later are for computer use. The same happens with BD-R, it has 3 versions, all for pc. So, will I be right if I say:

 

For BD-RE:

Version 2 = single layer disc

Version 3 = dual layer disc

Version 4 = multi-layered disc

 

For BD-R:

Version 1 = single layer disc

Version 2 = dual layer disc

Version 3 = multi-layered disc ???????????????

 

For BD-RE version 4 and BD-R version 3 things are easy, we have multi-layered discs (XL), as wikipedia mentions. But what is going on with BD-RE version 2 and 3 and BD-R version 1 and 2;

[Adrianvdh]

Ahh, Ok so currently now we have Blue-ray movies on SL and DL Blu-ray discs, if you look at a older disc and a modern disc.

This is no fact AFAIK, correct me if I am wrong, but I believe that 4K media will go on XL discs, but yet again, the XL discs can be used for data backup, Multiple movies re authored to fit on one disc. There are a number of reasons.