im collecting mp3s now for awhile allready and i now have ALOT of them on cds
because in this last years i used also ALOT of different brands of cds, i decided to test what cds where still ok and which ones should be backupped...
thats why i used nero's cd speed scandisc function to test them
now i know that a few damaged sectors aint bad as long as it aint to much of them (or as long as theyre not bad)
but the problem is:
WHAT IS TOO MUCH?
im now testing my mp3 cds (beginning with the oldest)
mmore gave 0.12% damaged sectors (the file test was no problem) and its read at 15x avarage
the basf gave 3.45% damaged (file test was ok too --> but for how long will that last? is this still trustable?) and its read at 15x avarage
the first nashua gave 0.11% and its read at 15x avarage
strange: the second nashua i test tests about 1/3 slower then the previous (10x) BUT has 0% damaged sectors? i dont really get that... can anyone explain? (is the speed that the cd is read also a factor to the quality of the media?)
the 3th nashua 0.46% and its read at 12x avarage
then comes an unknown cd (printed cd) which gets 4.76%damaged sectors and its read at 5x avarage
then a basf which has a few damages (little) which has 5.13% damaged sectors and 0.80% unreadable sectors and its read at 3x avarage
btw: im reading them in my old aopen 20x4x4x writer (so my cdrom and new liteon dont wear of :p) so 15x is ok
im makin a table of it
ill post that one when its done (it might be usefull in choosing a brand)
so can anyone tell me from how much % i should think of backupping them?
a little second question --> does it matter what drive i use to test this? (as long as it supports error detection)
i allready know my little question...
i just read that cd with unreadable sectors in my liteon 40x24x10x and the result is 0.11% damaged sectors, 0%unreadable :), and at 28x (ill still copy this cd though :p)
but ill keep on using my old aopen cause that gives me a better view of what is wearing of (perhaps ill do the recent cds in both to get an idea about media support (my liteone didnt read all cds i put in him, and sometimes my cdrom does read them)