Multiple CD writer taking long to burn

I have installed 6 DVD writers in Tower case.

I am using Alcohol Software to burn multiple CDS.

I have seen that about 4 dvd/cd writer finish recording early but some take long time finish and their speed is around 7x. Its not that those are the only writers doing that, some times other writer write slowly. But there are always 1 or 2 writer which takes about 25 min to write the 700Mb cd and some finish in 5 mins

Why is that. All writers can write upto 40px speed. Which thing determines the speed

Mirage

Posted 2010-01-22T00:02:48.660

Reputation: 2 893

are you burning multiple CDs simultaneously? or one at a time? – quack quixote – 2010-01-22T05:43:28.583

Answers

Sometimes optical drives revert to the slow PIO mode instead of DMA, typically because they encountered a scratched or damaged disc at some point. See this page for more information and a VB Script to correct the problem.

coneslayer

Posted 2010-01-22T00:02:48.660

Reputation: 7 494

There is probably a data transfer bottleneck somewhere along the chain. Could be the bus, the HD, etc. Assuming that you're using Windows, you can use perfmon to set some performance counters and see what you can figure out.

phoebus

Posted 2010-01-22T00:02:48.660

Reputation: 3 811

What is that perfmon , how can i use it – Mirage – 2010-01-22T00:43:05.323

Windows > Run > perfmon. It's not on Windows XP or ealier however. (Full name is the Reliability and Performance monitor) – Macha – 2010-02-15T20:13:08.527