I have got many big jobs and need to burn hundreds o discs.
There must be a limit for normal internal burners.
How do a burner act when they reach that limit?
Does it burn bad or not at all?
Where is the limit - 500 discs?
Is an external burner better in the long run?
Anyone who knows?
/Aje
External burners are the same mechanism as internal burners. They are simply put in a separate enclosure that has its own power supply, interface circuitry and (hopefully) cooling fan. No difference in how long the device will last. In fact, for hard drives, the external enclosures run so hot that the drives actually die prematurely.
As to the number, I have no idea, but I've been to duplicator shops where they are churning out discs all day long, day after day, and if the limit were 500 discs, they would be throwing their drives out every two weeks.
I have lost very few hard drives, but I've lost LOTS of CD and DVD drives. Near as I can tell, the failures had little to do with usage, and mostly with age, probably from the lubrication on the rails drying out. Hard drives are sealed, but all the horizontal movement in a CD or DVD drive is exposed to the air, and by design, air is moving through the enclosure. Thus, I would guess that if you burned lots of discs, you'll probably be just fine.
Others that have duplication towers can probably give you better statistics based on actual experience.
At a very rough guess, i'm at somewhere between 2000 and 3000 in my current burner, which i've had for less than 2 years. The other burner in my PC is probably at around 1000 to 2000, and is 5 years old. The only reasons it gets less use are because it's slower and only does +R. Neither drive works any worse for wear now than when they were new.
When i pound on them with non-stop burning i do notice that each successive disc comes out of the tray a little warmer than the previous one, up to about 6 or so. After that they don't get any hotter. I don't think this is an indication of any problem. It just shows at which point the temperature gets high enough for radiation to cool it down as fast as it generates heat. I'm merely pointing it out so that in case you notice it you won't get too worried.
Thanks a lot for your answers!
Yes I´ve noticed that discs get warmer
and wormer when burning in a row.
Another question to you experienced guys:
I use to burn 4x speed for safety even if my burner
and discs (verbatim+R printable)can handle 16X.
I´ve read somewhere in this forum that its more secure
not to burn with max speed.
But today somebody told me that certain burners and/or
disc brands don´t burn so well when burning
in too low speed (much lower than they are built for).
Is this true?
Is it more accurate to burn with 8X on a 16X burner/disc
than 4X.
Thanks a lot once again!
/Aje
use to burn 4x speed for safety even if my burner and discs (verbatim+R printable)can handle 16X. I´ve read somewhere in this forum that its more secure
Man, the urban legends that get spread around the Internet.
Back in the early days of DVD recordable discs, Ralph LaBarge published the results of one of the few scientific studies every publicly released (lots of them have been conducted privately for companies in the industry). This study showed which brands of DVDs produced the most compatible results. One sentence out of that report stated:
"If you choose to use off-brand media, record them at the lowest speed possible-1x for DVD-R and DVD-RW, and 2.4x for DVD+RW. Using slower recording speeds increases the overall compatibility rating of off-brand media."
However, this was done at a time when 2x speeds were the maximum available. Also note that it refers to "off-brand" media. The "name-brand" media showed no improvement at slower speeds.
A lot has happened to both the recorders and to the media since then.
I cannot give you a link to any scientific study that either proves or disproves the notion that slower is better. However, I can tell you, from very limited tests I have performed myself, that I cannot detect any correlation between burn speeds and measured error rates. Therefore, it is my belief, based on these tests, that you are unnecessarily wasting a lot of time for zero gain, by burning at slow speed.
Fortunately, you can easily do this test yourself.
If you have to make multiple copies of the same disk for clients, using the identical media for all burns, burn the first one at the lowest speed, the next at the next highest speed, and so on. Then, download the Nero CD-DVD Speed V4.50 from this page:
Use it to measure the actual error rates on each of the discs. This will tell you pretty accurately for your burner and for the media you are using, whether there is a difference between burn speeds. If you have LOTS of discs, then burn two or three at each speed. This is a scientific test, based on real measurements, not on urban legend. You might see a slight increase in error rate at the absolute highest speed, because of vibration, which is usually a bigger issue than the complexities of the shortened time for the laser to heat the dye when the disc is rotating faster.
For more information, you might want to click on this link and look at an older, but almost identical thread in this forum:
I confirm also that the high speed doesn't decrease the burned DVD quality when tested with nero cd speed. Tests with Verbatim DVD-R X16.
Enjoy high speed burns !
There are many other programs that do this, and some actually can provide far more information, although only if your DVD reader/write supports it. Often you can get a wider range of results from a DVD reader (i.e., a drive that doesn't write, but only reads DVDs). Also, Pioneer and Sony drives provide less information than some other drives.
Found this excellent test program (freeware for personal use))
"CD Check " by Mitja Perkos (takes dvd too)
You can find it on
www.elpros.si/CDCheck/
/Aje