We are writing a script to automate backup. We are using Acronis Backup 12.5. The program requests that you specify an optional split size in megabytes. I know that DVD (single layer) can hold 4.7GB. I could convert that to megabytes, however, I think that there are better recommendations for the size the optical media can hold. I am wondering if there is a chart or something that list the actual sizes Blu-ray, DVD, and CD can hold? I know for burning the size can be a little smaller than what the actual specification states. Any advice is very welcome. Thanks
CD: 702MB (there are also 800MB, 870MB, 900MB, but hard to get and not compatible to many Softwares and drives)
DVD+R DL: 8151MB
I would recommend to burn not to the limit because of reliability
Super helpful. I learned the hard way not to burn to the limit with Blu-rays. I just figured the software (Nero) would have my back. But I was wrong. Do you know the limit for BD-R DL? Thanks so much.
BD-R DL 46566MB
But I´m not a friend of DL-media
Why… is it not as reliable as other media? I was thinking Blu-ray DL is good media for data backup. I am even interested in the 100GB and 128GB. Thanks
“DVD+R: 4482MB” is what I’ve seen with all that +R media.
But “DVD-R: 4488MB” is not the real limit, without overburning I have had many discs which reported max. 4492MB.
For real it’s even not MB but MiB.
Personally I never used BD-R DL because the costs are higher than SL-media, slower burning and less quality.
Same with DVD+R DL, but I do Software-Testing at work and had movies/data which need DL.
I paid for BD-R SL made by CMC 11,29€/25 pcs, that´s cheaper than the prices here for standard DVD+R DL, so BD-R SL is the best bang for buck at optical media.
But I have made the worst experience in longevity with some BD-R-media from Ritek, which was unreadable after 3,5 years. Never had such bad experience with DVD-media.
Can you show me this? All DVD-R I ever used have 4488,xxMB? I know long time ago BeAll said their media have higher capacity than the standard DVD-R, but never tried it. So I don´t know which capacity it reported or if overburning is necessary.
I´ve experimented also with DVD-overburning but I wouldn´t recommend it. Less drives can do that, mine (Plextor, Benq) only with +R, but most drives can´t read these media to the end, e.g. Pioneer (original and QSI-based)
4492MB was it for sure and I think it has been discussed in this forum earlier…
But I’ll try to find some of these discs.
even 3MiB more. Real DVD5 capacity
You are the only one who see it
The answer from Dragemester looks similar to my experience.
CDSpeed show this
DVDIdentifier show 448,3MB with DVD-R, 4482,6MB with +R
Maybe it’s because that was with earlier DVD-R media (1x/2x & 1x-4x). Of course this only counts for WORM media.
But there was also the talk about DVD-R media with “expanded capacity” like it was with CD-R before (650MB usually to 700MB to 800MB to even more than 900MB, IIRC). See BeAll releases 4.85GB extended capacity DVD-R discs
If I remember it Ican take a look at some very old DVD-R-media like my Litetec 1x from Princo, but I doubt this capacity
I remember first DVD-R have a capacity of 3,95GB, not sure if it only was for authoring.
CD-R-specs are different, not easy to compare with DVD R. Started somewhere with 580MB or something, 650MB was standard. First CD-R-writers need to support overburn to burn 700MB CD-R
Even after 870/900MB were released, most writers wasn´t able to recognize it directly (maybe also depending on media and software), so overburn to 99 Min or higher should be supported.
However, CD-R was always a bit differnet with capacity. I remember some 700MB CD-R with only 701MB, others with almost 703MB (without overburning). My CD-Rs 650MB started with 650,xMB (Mitsui), something with 654MB and 660MB (Gigastorage)
Didn´t see such differences with DVD-media
No one doubted the existence of 3.95 GB DVD-R media, I have some for General and even for Authoring!
“DVD-R for Authoring” is v1 and “DVD-R for General usage” is DVD-R Revision v2.
You can think what you want - but I saw these DVD-R with data capacity of 4495MB by myself and I have used them of course. First CD-R burners could only burn to CD-R and only 1x and/or 2x with these speed rated media. And you had no wide selection to choose from - I remember Philips and Kodak media, they were superb quality! That was in early 1997.
Started with 4x CD-R-media in 2000, so I don´t know those older media, but I believe you in this case
Maybe those bigger DVD-R exist, but personally never seen it, and I had very much different DVD-media in my life
Maybe some ancient members also know it, but I never saw this
Yeah, the “usual” DVD-R SL media we know only have a data capacity of 4489 MB (approx 4.38GiB).
But maybe some tools “calculate” the data capacity wrong using either CDFS or UDF, … different revisions?! Or is the capacity from within the MID??
I guess it´s in the MID. CDSpeed shows 4488MB on a blank disc, so the FS isn´t available