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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Notebooks > Liimit of burnt CDs with the SuperDrive

Liimit of burnt CDs with the SuperDrive
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ARENA
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Mar 14, 2003, 12:58 PM
 
I have to do a project which requires me to burn about 300 cds with a QuickTime presentation. The only burner i have is the SuperDrive in my TiBook, so i wonder how many discs can i burn without causing any harm to the drive...Is there a known limit of burns to burners iun general, and specifically, to the SuperDrive?

Thanks in advance for the feedback.
     
morlium
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Mar 14, 2003, 01:01 PM
 
How many burns could a burner burn if a burner could burn burns?

Sorry, I couldn't resist. Anyway, I don't believe there is any cap on the amount of burning a CD-R drive can do.

You may encounter some coasters along the way, but all in all, you should be fine.
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bradoesch
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Mar 14, 2003, 05:10 PM
 
As long as it didn't get too hot you shouldn't get into trouble.
The way I see it though, say your drive will do 2000 discs before it dies, then you're 300 less on that number.

morlium: clever joke, I liked that
     
seanyepez
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Mar 14, 2003, 06:00 PM
 
Most drives are built to read and write thousands of disks.
( Last edited by seanyepez; Mar 14, 2003 at 06:15 PM. )
     
Karim
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Mar 15, 2003, 02:30 AM
 
This is actually a good question.

I couldn't find specs on the UJ815 in the PBG4 SD but here is a desktop version the DVR-104 (I imagine the portable version will have a worse failure rate)

MTBF 60,000 hours for just being "on"

MTBF 12,000 hours for reading (20% total)

MTBF 1,200 hours for writing (2% total)

So, 1200 hours before failure for writing is actually not that high.

If you write a full CD at 8x speed it would take almost 10 minutes. That's 6 discs an hour making the total number of CD's you could write at around 7,200 before you can expect your drive to go caput.

However with DVD-R's it's about 1,200 before its all over.

And this is assuming no other use of the drive, so their is definately a limit to the amount of burning a drive can take.

But, making 300 copies isn't going to hurt, your only burning up to 4% of the drive's lifespan.
     
ARENA  (op)
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Mar 16, 2003, 02:29 AM
 
That's the kind of answer i was expecting.
Thanks for the info.



Originally posted by Karim:
This is actually a good question.

I couldn't find specs on the UJ815 in the PBG4 SD but here is a desktop version the DVR-104 (I imagine the portable version will have a worse failure rate)

MTBF 60,000 hours for just being "on"

MTBF 12,000 hours for reading (20% total)

MTBF 1,200 hours for writing (2% total)

So, 1200 hours before failure for writing is actually not that high.

If you write a full CD at 8x speed it would take almost 10 minutes. That's 6 discs an hour making the total number of CD's you could write at around 7,200 before you can expect your drive to go caput.

However with DVD-R's it's about 1,200 before its all over.

And this is assuming no other use of the drive, so their is definately a limit to the amount of burning a drive can take.

But, making 300 copies isn't going to hurt, your only burning up to 4% of the drive's lifespan.
     
SplijinX
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Mar 16, 2003, 09:08 PM
 
I can't imagine the sheer fact of having to insert and eject 300 CDs, best of luck to you on the project.
Are those free-ranged animal crackers?
     
spiff41398
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Mar 16, 2003, 09:57 PM
 
Just make sure you burn in batches and to stop at regular intervals to allow the drive to cool off.

I just finished burning 100 CDs for a wedding giveaway and after the 90th disc, I consistently produced coasters. After experimentation, I found out that the CD-R laser was not functioning anymore (CD-RW still worked). It's a good thing I still had warranty and the store just replaced it with a brand new unit (LG 4320B combo drive).

You can also buy a fast IDE burner and plop it in an external Firewire case, so you don't risk shortening the life of your SuperDrive.
     
Dave Hagan
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Mar 16, 2003, 10:21 PM
 
I would think it would be cheaper to have them sent out to a duplicating facility where you could have the CDs pressed.
Dave Hagan | Apple Certified Technical Coordinator | iMac G5 1.9GHz | PowerBook G4 1.5GHz | Power Mac G4 933 MHz
     
romeosc
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Mar 16, 2003, 10:50 PM
 
Originally posted by Dave Hagan:
I would think it would be cheaper to have them sent out to a duplicating facility where you could have the CDs pressed.
..... $60 per thousand. One day delivery
     
Karim
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Mar 16, 2003, 10:55 PM
 
That seems like a good price. Who have you used to do mass duplication?
     
   
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