XGD3 XGD3 Disc Quality


Senior Member
Nov 1, 2011
Trinidad, West Indies.
My question is about the quality standard for XGD3 discs. I know it's a tired topic, but still.

Here's what I know, the gold standard for XGD3 discs is:
Make sure KProbe2 is set to 4x CLV Scanning

PI MAX should be 100 or less & PI Average should be 5 or less
PIF MAX should be 4 or less & PIF Average should be 0.20 or less
Nero Score should be no less than 90
Here's where there may be some grey area:

PI = Parity Inner
PIF = Parity Inner Failures

Basically PI errors can be as high as 200, and still have a readable disc, but to achieve a good XGD3 burn you need to be around 100, whereas PO errors over 8 are not good. In actuality, you look at the average PI/PO, but you still don't want any spikes in PI that run high, or in PO that are above say 8 or 9.

If you use NERO CDSPEED as a disc quality test, all you have to worry about is the disc quality score which is shown in a box. As long as your disk quality score is over 93 it should be fine.
For a disc such as the one I attached having superb values in all but one area and only slightly going over that area, do we re-burn or use the disc? What are the implications of using the disc?

Here's the KProbe2 and Nero data:

Date : 2/15/2012 7:55:23 AM
Model : 1-0-0-0 G:ATAPI iHAS524 B AL2A
Disc : DVD+R DL , MKM003 [Mitsubishi Chemical Corporation]
Speed : 4x
ECC blocks sum (PI/PIF) : 8/1
Scanned range : 0 - 4267020
Sampling count : 250631
Errors : 0
PI Max : 19
PI Average : 0.88
PI Total : 27566
PIF Max : 5
PIF Average : 0.06
PIF Total : 1980

Nero DiscSpeed - Disc Quality
General Information
Drive: ATAPI iHAS524 B
Firmware: AL2A
Disc: DVD+R DL (n/a)
Selected speed: 4 X
PI Errors
Maximum: 17
Average: 0.82
Total: 27436
PI failures
Maximum: 6
Average: 0.01
Total: 1985
PO failures: -
Jitter: -
Scanning Statistics
Elapsed time: 26:20
Number of samples: 250843
Average scanning interval: 1.06 ECC
Glitches removed: 0
Quality Score: 77

As you can see, excellent PI Max, PI Avg and PIF Avg, but failed PIF Max by 1 in KProbe2 and by 2 in Nero. If looked at closely looks like 2 fails close together.

From a numerical standpoint also, 1/4 = 25% and 2/4 = 50%, so that makes it look horrid.

I would like to have the opinion of you gurus.
Thank you.