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DVD-RAM Performance
The Sony DRU-830A is a so-called Multi DVD Drive, meaning is also supports writing and reading the DVD-RAM format. Lets us look at the recording side of the disc, and as you can see it has differences from the other DVD+R/W/R9 DL and DVD-R/W discs.
On the data side, we can see a very fascinating pattern of lighter spots, supposedly these spots are used for calibration while writing and reading.
A DVD-RAM’s disc can be formatted in the following formats: FAT32, UDF 1.02, UDF 1.50, UDF 2.00, UDF 2.01, and UDF 2.50.

By formatting a DVD-RAM disc with FAT32 it will act like a removable hard drive and all writing will be done as “background processes”. Meaning you do not have to wait for it to finish, you can start or work with other applications while the DVD-RAM is working without noticing any “hangs” or CPU slowdowns.
Lets us take a look how the drive performs:


Maxell branded 12x media manufactured by Maxell.
Thanks to ExtremeMhz for providing this media.

Writing Maxell 12x without verification

Writing Maxell 12x with verification

Transfer Rate test
As we can see, the Sony DRU-830A writes 12x DVD-RAM without any problem, read back the disc at 12x speed in 5:47 minutes.


Maxell branded 5x media manufactured by Maxell.
Thanks to Maxell USA for providing this media.

Writing Maxell 5x without verification

Writing Maxell 5x with verification

Transfer Rate test
As we can see, the Sony DRU-830A writes 5x DVD-RAM without any problem, read back the disc at 5x speed in 10:57 minutes.
For those of you who are not familiar with DVD-RAM, you may probably think that something went wrong during the write process with the verification turned on, since the 3x and 5x media was written at 1.3x and 2x, respectively. But don’t worry, that is pretty normal for DVD-RAM discs. The reason for the lower writing speed is, the drive constantly reads back the data after writing it to verify that it’s written correctly. We can also call it a “bullet proof” writing/verify technique, with no data loss/errors.
Before we complete this review, let us run the drive through some advanced tests at next page…
37 Comments
. The laser of the drive open the hole in CD-RW and my DVD+RW discs?
, i´m investigating. _third, well, after this problems, the DRU-830 is bealtiful and record very well DVD+R till moment. Need improve with more discs registered to recognizes speed (DVDs+-R) and record quality, especially RWs
wots wrong?
wots wrong? " oops stupid mistake. 4got computer recognition is diiferent. pls ignore it.
my dvd riter sOny DRU-170C giving me same things. it isnt reading any of DVD s and saying that insereted disc is a blank cd (instead of a DVD ).all of my frnds having same problem . it s IC problem . The IC of sony dvd riter /cd riter is faulty ! and they arent taking pains to rectify the errOr! sony sucks!!!!
P.S http://sony.storagesupport.com/dvdrw/firmware.htm
I personally feel with most stores carring blank DVD's there is a large market for making back-up copies of your DVDs and Sony has missed the boot on this issue! The Lie-On DVD Burners is a better choice for those of use who have a need to make back-up copies of their DVDs and no drive that does not support BOOK TYPING should not be considdered! :g
This message was edited at: 16-03-2008 15:21
Dru 830 a is pure madness... Are you complaining about "complex" things like recording? Well let me tell you about the most shitty issue on this player/recorder... My dru 830 wouldn't play movie dvd's correctly... And I bought this unit to enjoy the capabilities of my computer to watch movies... At this moment I have no money to afford a new dvd-rw... I've tried everything... from the new firmware to the IDE device set up thingy. none of them worked... The error message when playback? "Css copy protection failed" I'm really pissed off... 