[QUOTE=bart_uk;1954871]I have burned close to 500 of these disks from the 25 spindles and they have been perfect. Two months ago I went to re-order and the supplier only had 50-packs.
The first two disks failed to verify after burning successfully. Since then I have verified every disk and scanned about 25% of them. The results are not great, at best PIF total is around 3000 with a max of 3.
After 40 disks there have been no further fail-to-verify disks, however, the disks I have re-scanned concern me greatly.
The following three scans are of the same disk. The first was taken immediately after burning it, the second a month later and the third today.
Correct me if I am wrong, but these disk are deteriating so badly that they will be unreadable in a few months.
The batch number is GH000172. The disks were written at 16X on a Plextor 716SA, Liteon LH-20A1P, [B]Pioneer DVR-112D[/B] and a Liteon LH-20A1S.[/QUOTE]
[QUOTE=terminalvelocd;1954997]TYG03 is variable quality media. You need a drive with good OPC capabilities to burn it well. Try burning them in a [B]Pioneer[/B] or Optiarc drive.
I think he already has
I’m mostly concerned about the degradation more than anything.
To be honest, 3000 PIF is totally acceptable so long as:
- It’s spread out very evenly (not in clumps)
- The disc is stable and does not degrade
Seems like you got some bad discs there. As I said, the degrading really worries me the most. Please keep a close eye on those discs, isolate a handful of them that you suspect to be degrading and please scan them weekly and post here so we can see if they’re getting worse week by week. I’ve never actually seen or heard of TYG03 degrading so this would be the first case and it would be very useful to document it.
I’ve personally used about 100 TYG03 under the Verbatim brand and they were in 50 packs. They never scanned very well - some discs had around 800 total PIF and others had 3000-5000 PIF total. I believe TY has without a doubt made B grade discs for Verbatim. I’ve seen them fail transfer rate tests (which is like a verify) and I’ve had trouble burning above 8x.
I would strongly suggest to never burn Verbatim branded TYG03 @ 12x or higher. Always go 8x or lower. I have never seen a “nice” scan of Verb branded TYG03. They always have more errors than the so called premium TYG03. I don’t trust scanning 100% but there’s some un-deniable factors with these discs that leads me to think they just aren’t the top stuff we’re all used to.