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#1
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HDD and CD-Rom on same channel?
I have my HDD and CD-RW as Master and Slave on the Primary channel and
no devices on the Secondary channel. I have read that this setup may cause a degradation of the data transfer rate of the faster device (the HDD) to that of the slower device (the CD-RW) since they're both on the same channel. Then again, I've also read that although this may have been true years ago with the older chipsets, it is no longer valid and that, in fact, two devices on the same channel will have data transfer rates independant of each other, i.e, the faster device is unaffected by the slower device. Anyone know the actual correct information on this? Thanks. |
#2
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On 24 Sep 2005 11:41:00 -0700, "Joker47" wrote:
I have my HDD and CD-RW as Master and Slave on the Primary channel and no devices on the Secondary channel. I have read that this setup may cause a degradation of the data transfer rate of the faster device (the HDD) to that of the slower device (the CD-RW) since they're both on the same channel. Then again, I've also read that although this may have been true years ago with the older chipsets, it is no longer valid and that, in fact, two devices on the same channel will have data transfer rates independant of each other, i.e, the faster device is unaffected by the slower device. Anyone know the actual correct information on this? Thanks. I found that I get better BIOS recognition if I make my NEC 3540 the secondary master. Before when I had it the secondary slave, with a removable hard drive bay on the secondary master, the BIOS had a difficult time recognizing it. Now it recognizes it every time regardless of what I do, like putting a disc in during POST. I have never seen any transfer speed issue but your setup may be different. The only way you will be able to convince yourself about the transfer issue is to perform an experiment transferring the same content with different configurations. -- Greatest Movie Line Ever http://home.houston.rr.com/rkba/MovieLine.wmv "What is history but the story of how politicians have squandered the blood and treasure of the human race?" --Thomas Sowell |
#3
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On 24 Sep 2005 11:41:00 -0700, "Joker47"
wrote: I have my HDD and CD-RW as Master and Slave on the Primary channel and no devices on the Secondary channel. I have read that this setup may cause a degradation of the data transfer rate of the faster device (the HDD) to that of the slower device (the CD-RW) since they're both on the same channel. No, completely untrue. Then again, I've also read that although this may have been true years ago with the older chipsets, it is no longer valid and that, in fact, two devices on the same channel will have data transfer rates independant of each other, i.e, the faster device is unaffected by the slower device. It has not been true for 10 years. Any (even remotely) modern technology including the board and drives have long since overcome this issue. Anyone know the actual correct information on this? Thanks. The other issue is that both devices on same IDE channel cannot do I/O simultaneously. For that reason, the optimal arrangement would be to put each alone on an IDE channel since you have another available. However, in many uses the potential performance benefit is not needed, it would typically require a fairly aggressive parallel use of the HDD for other tasks while simultaneously trying to burn data from same HDD. |
#4
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Kony,
Thanks for the info. Just for grins and giggles, I'm going to route the CD-RW to the secondary IDE channel and see if I can notice any improvement in my HDD access speed. My guess is that I probably won't, or that even if there is an improvement, it will be quite negligible. |
#5
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They DO affect each other's speeds. You should have the harddrive on the
primary IDE channel and the CD-ROM on the secondary IDE channel. -- DaveW __________ "Joker47" wrote in message ps.com... I have my HDD and CD-RW as Master and Slave on the Primary channel and no devices on the Secondary channel. I have read that this setup may cause a degradation of the data transfer rate of the faster device (the HDD) to that of the slower device (the CD-RW) since they're both on the same channel. Then again, I've also read that although this may have been true years ago with the older chipsets, it is no longer valid and that, in fact, two devices on the same channel will have data transfer rates independant of each other, i.e, the faster device is unaffected by the slower device. Anyone know the actual correct information on this? Thanks. |
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