I-O DATA BRD-AM2B/U Blu-ray Disc Writer

CD Write and ReWrite Tests - Nero Burning Rom 6.6.0.12 andDLA 4.95:

For this test I randomly generated 650MB and 700MB of files and directories to test the time it takes the drive to write and close a CD. All of the files are between 1MB and 25MB in size and no more than 10 directories deep.

The BRD-AM2B/U uses Z-CLV, or Zone CLV, to reach its maximum writing speed. By looking at the screenshot above, you can see that it uses a total of three "zones" to reach 24x. The drive starts writing at 12x and jumps to 16x at about the 8 minute mark.The BRD-AM2B/U writes at this speed until about the 39 minute mark. When it reaches this point, its writing speed increases to 24x and stays there until the end of the session.

To test the drive's writing times, I wrote our test data to some Taiyo Yuden manufactured Fuji media rated at 48x. The results are below.

To test the drive's writing quality I used Lite-On IT's KProbe2. Written by Karr Wang, this utility can be used to test the number of C1 and C2 errors on a disc. For these tests I used a Lite-On LTR-52246S (firmware 6S0F) and read the discs at 32x.

Fuji 48x (Taiyo Yuden)

Memorex 52x (CMC)

Verbatim 52x

The BRD-AM2B/U's writing quality was very good. By looking at the KProbe screenshots, you can see that the discs burned by the drive had a low number of C1 errors. More importantly, there were no C2 errors at all.

For the rewriting tests I created 400MB of files on the hard drive and wrote them in DAO mode using Nero. To test the packet writing speeds I copied and pasted the same files off the hard drive onto a CD-RW disc using DLA from Sonic. Verbatim's 24x Ultra Speed CD-RW media was used for these tests.

The BRD-AM2B/U also uses Z-CLV when rewriting at 16x. The drive starts rewriting at 12x, and then jumps up to 16x at the 7 minute mark.

I-O DATA's new DVD writer did fairly well in our rewriting tests. The drive took 3:24 to write 400MB with Nero and 3:37 to do the same with DLA. The BRD-AM2B/U also took a mere 18 seconds to do a quick erase and 5:11 to fully erase the disc.