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Home > Hardware Reviews > Optical Storage > DVD Recorders Double Layer

Friday, September 17, 2004
Pioneer DVR-A08XLA

2. DVD Recording Tests

Pioneer DVR-A08XL DL Recorder - Page 2

DVD Recording Tests

- Writing Performance

The Pioneer DVR-A08XL supports 16X ± R (Z-CLV) writing speeds along with 4X CLV for DVD±RW, 4X CLV for DVD+R9 media. Nero Burning Rom reported speeds are shown below, after inserting a DVD-R media.

The Pioneer DVR-A08XL uses Zone-CLV recording strategy, meaning the disc area is divided into zones, where in each zone the speed is constant. In order to reach the 16X recording speed, the drive uses 4 zones (6X->8X->12X->16X).

As Pioneer explains "...ZoneCLV is a method for data writing in which the writing area within a disc is separated into "zones", between the inner, mid, & outer circumferences. Within each zone, writing speed is maintained at one fixed speed, this allows for the writing speed to be perfectly stable. Pioneer considers ZoneCLV writing as an important method for ensuring high quality writing and maintaining data integrity..."

The 16X speed is reached at the 4.00GB point, meaning that unless you are burning a full 4.36GB project, you will not benefit from the promised 16X speed. By using Nero CD-DVD Speed with DVD-R and DVD+R media, we are able to see the 12X/8X Z-CLV recording technology being used by the recorder.

  • DVD-R media @ 16X

Click to enlarge!

By using the TDK 8X DVD-R we can see the writing strategy graph for reaching the 16X writing speed. There are 4 zones, 6X from 0 to 0.8GB, 8X from 0.8GB to 1.8GB, 12X from 1.8GB to 4.0GB and 16X from 4.0GB to the end. The average writing speed reaches 10.34X.

By using a DVD+R media (create Data Disc), the average writing speed drops a little to 10.28X and the total recording time rises up to 6:48mins.

Click To Enlarge!

Below are the writing transfer tests for the 12X and 8X writing speeds:

  • DVD±R media @ 12X

Click To Enlarge!

  • DVD±R media @ 8X

Click To Enlarge!

- Burning Tests

We burned 4315MB of data on various DVD±R, DVD±RW media. We used the maximum allowed writing speed for each disc. All tests were carried out with the latest available firmware (v1.10) and we burned only ±R media supported at 8+X speeds and not at 4X.

- Writing Time Results

  • DVD-R media

  • The only media we had in our labs that allowed 16X burning was TDK 8X media with ID code TTH01. As far as we know, only two other media are supported at 16X, SONY 8X -R (SONY08D1) and Maxell 8X -R (MXL RG03). According to Nero, it took 6:54mins to finish the task at 16X. There is a big difference between the recording time that Nero needed to burn the project (not full disc) 6:54mins and what CDSpeed reported 6:24mins, where we noticed that Nero takes a long time during the LeadOut area...
  • The DVR-A08XLA supports more media at 12X. The recording times vary according to the used media, the worst results coming with TDK 8X -R (TTG02) since the drive lowered speed to 8X near the end.
  • At 8X the recording times are similiar since both DataWrite and MMore 8X -R are based on FuliFilm03 media.

Below are results after inserting several media in the drive. BenQ 16X -R and LeaData 8X -R are only supported at 4X, as were also TY and Verbatim 4X media which with some drives have allowed speeds of 8X. Future firmware upgrades hopefully will support more media at 8X.

8X DVD-R

12X DVD-R

16X DVD-R

  • DVD-RW media

The drive supports 4X writing with various 4X DVD-RW media we used. The burning times were from 14:35 ~ 14:48mins.

  • DVD+R media

  • The DVR-A08 supports more than one media at 16X. The lowest recording times came with CMC Magnetics 8X and Verbatim 16X, while the TY 8X needed a few more seconds to end the task.
  • Many 8X rated media will burn at 12X with recording times of 7:07~7:19mins
  • At 8X several media are supported, with recording times of 8:09~8:15mins. In general DVD+R/RW recording times are higher, by a few seconds, compared with the DVD-R/RW.

As we have seen with the DVD-R format, newer 16X DVD+R media is not supported at 16X, only at 4X. Hopefully Pioneer will fix this with new firmware.

8X DVD+R

12X DVD+R

16X DVD+R

  • DVD+RW media

The recording times with DVD+RW format were impressive at 13:43mins.

- DVD Overburning Tests

Using Nero CD-DVD Speed, we tested if the drive can overburn using DVD+R and DVD-R media. Unfortunately, the drive does not support overburning with either ±R media, returning an error message while trying to start the burning process.

- DVD+MRW Tests

The drive doesn't support the Mount Rainier feature.




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