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#31
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CD writer and DVD/CD rom can't be shared in workgroup
Sorry, from my experience on a 100 mb LAN (and this is at NASA, so it's not
idle!). Have never had a coaster burning from the network at top speed. Mike "Nathan McNulty" wrote in message ... It is important to note that most CD and DVD Writers can operate in DMA Mode 2. This is 33 MegaBytes Per Second for the max throughput. The only way you are going to be able to burn a DVD at anthing higher than 8x over a network is if the network is capable of transfering that amount of data which would require a Gigabit Network. Also important to note is that most of these hardware components only operate at about 80% efficiency. This means with DMA Mode 2 (33 MB/s), you really only get around 25 MB/s. Burning 16x DVD's requires about 22 MB/s. One way to make sure that your DVD's and CD's are properly burned over the network would be to limit the speed of writing to handle the amount of data that can be transfered (and allow room for error as well). Here are my suggestions for writing to a CD over a network: For 10 MBit Networks: CD Burn speed of 4x (Though 8x may be possible, I wouldn't recommend it) DVD Burning will not work on a 10 MBit network For 100 MBit Networks: CD Burn speed of 52x (Full speed should be supported) DVD Burn speed of 8x (May lower to 4x on high traffic networks) ---- Nathan McNulty Steve Winograd [MVP] wrote: In article , "Mike Matheny" mikematheny@swbelldotnet wrote: When you share a CD or DVD writer over a network, it's shared as a read-only device, even if you've specified write access. It isn't possible to write to it from another computer. An Ethernet network connection can't supply data fast enough to support CD or DVD burning. Well, you're correct about not writing to the CD writer, but wrong about not being able to supply data fast enough through a network - even the fastest IDE subsystem cannot perform as fast as even a 10mb network. Are you sure about that, Mike? Here are the rated transfer speeds of some systems: Ultra ATA/33 IDE drive interface: 33 megabytes/second Ultra ATA/66 IDE drive interface 66 megabytes/second Ultra ATA/100 IDE drive interface 100 megabytes/second 10BaseT Ethernet: 10 megabits/second = 1.25 megabytes/second 100BaseTx (Fast) Ethernet 100 megabits/second = 12.5 megabytes/second As I interpret those numbers, the slowest IDE disk is almost three times faster than Fast Ethernet. Is that right? I've measured actual speeds for disk copies over a Fast Ethernet network, and the result is typically 50-70 megabits/second. That involves reading one computer's disk and writing the other computer's disk, and it's much faster than a 10 megabit/second network. |
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#32
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CD writer and DVD/CD rom can't be shared in workgroup
Sorry, from my experience on a 100 mb LAN (and this is at NASA, so it's not
idle!). Have never had a coaster burning from the network at top speed. Mike "Nathan McNulty" wrote in message ... It is important to note that most CD and DVD Writers can operate in DMA Mode 2. This is 33 MegaBytes Per Second for the max throughput. The only way you are going to be able to burn a DVD at anthing higher than 8x over a network is if the network is capable of transfering that amount of data which would require a Gigabit Network. Also important to note is that most of these hardware components only operate at about 80% efficiency. This means with DMA Mode 2 (33 MB/s), you really only get around 25 MB/s. Burning 16x DVD's requires about 22 MB/s. One way to make sure that your DVD's and CD's are properly burned over the network would be to limit the speed of writing to handle the amount of data that can be transfered (and allow room for error as well). Here are my suggestions for writing to a CD over a network: For 10 MBit Networks: CD Burn speed of 4x (Though 8x may be possible, I wouldn't recommend it) DVD Burning will not work on a 10 MBit network For 100 MBit Networks: CD Burn speed of 52x (Full speed should be supported) DVD Burn speed of 8x (May lower to 4x on high traffic networks) ---- Nathan McNulty Steve Winograd [MVP] wrote: In article , "Mike Matheny" mikematheny@swbelldotnet wrote: When you share a CD or DVD writer over a network, it's shared as a read-only device, even if you've specified write access. It isn't possible to write to it from another computer. An Ethernet network connection can't supply data fast enough to support CD or DVD burning. Well, you're correct about not writing to the CD writer, but wrong about not being able to supply data fast enough through a network - even the fastest IDE subsystem cannot perform as fast as even a 10mb network. Are you sure about that, Mike? Here are the rated transfer speeds of some systems: Ultra ATA/33 IDE drive interface: 33 megabytes/second Ultra ATA/66 IDE drive interface 66 megabytes/second Ultra ATA/100 IDE drive interface 100 megabytes/second 10BaseT Ethernet: 10 megabits/second = 1.25 megabytes/second 100BaseTx (Fast) Ethernet 100 megabits/second = 12.5 megabytes/second As I interpret those numbers, the slowest IDE disk is almost three times faster than Fast Ethernet. Is that right? I've measured actual speeds for disk copies over a Fast Ethernet network, and the result is typically 50-70 megabits/second. That involves reading one computer's disk and writing the other computer's disk, and it's much faster than a 10 megabit/second network. |
#33
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CD writer and DVD/CD rom can't be shared in workgroup
Sorry, from my experience on a 100 mb LAN (and this is at NASA, so it's not
idle!). Have never had a coaster burning from the network at top speed. Mike "Nathan McNulty" wrote in message ... It is important to note that most CD and DVD Writers can operate in DMA Mode 2. This is 33 MegaBytes Per Second for the max throughput. The only way you are going to be able to burn a DVD at anthing higher than 8x over a network is if the network is capable of transfering that amount of data which would require a Gigabit Network. Also important to note is that most of these hardware components only operate at about 80% efficiency. This means with DMA Mode 2 (33 MB/s), you really only get around 25 MB/s. Burning 16x DVD's requires about 22 MB/s. One way to make sure that your DVD's and CD's are properly burned over the network would be to limit the speed of writing to handle the amount of data that can be transfered (and allow room for error as well). Here are my suggestions for writing to a CD over a network: For 10 MBit Networks: CD Burn speed of 4x (Though 8x may be possible, I wouldn't recommend it) DVD Burning will not work on a 10 MBit network For 100 MBit Networks: CD Burn speed of 52x (Full speed should be supported) DVD Burn speed of 8x (May lower to 4x on high traffic networks) ---- Nathan McNulty Steve Winograd [MVP] wrote: In article , "Mike Matheny" mikematheny@swbelldotnet wrote: When you share a CD or DVD writer over a network, it's shared as a read-only device, even if you've specified write access. It isn't possible to write to it from another computer. An Ethernet network connection can't supply data fast enough to support CD or DVD burning. Well, you're correct about not writing to the CD writer, but wrong about not being able to supply data fast enough through a network - even the fastest IDE subsystem cannot perform as fast as even a 10mb network. Are you sure about that, Mike? Here are the rated transfer speeds of some systems: Ultra ATA/33 IDE drive interface: 33 megabytes/second Ultra ATA/66 IDE drive interface 66 megabytes/second Ultra ATA/100 IDE drive interface 100 megabytes/second 10BaseT Ethernet: 10 megabits/second = 1.25 megabytes/second 100BaseTx (Fast) Ethernet 100 megabits/second = 12.5 megabytes/second As I interpret those numbers, the slowest IDE disk is almost three times faster than Fast Ethernet. Is that right? I've measured actual speeds for disk copies over a Fast Ethernet network, and the result is typically 50-70 megabits/second. That involves reading one computer's disk and writing the other computer's disk, and it's much faster than a 10 megabit/second network. |
#34
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CD writer and DVD/CD rom can't be shared in workgroup
Kelly, I have run the program downloaded on the computer with CD writer and DVD rom drives but the result remains unchanged. Is there any other way to fix it? Or please let me know where I should check and/or modify the registry. Thanks, Ray "Kelly" wrote in message ... Hi Ray, The former. -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... Kelly, Should I apply it to the pc with CD-ROM drive or the pc to access the CD-ROM drive. Thanks for your further advice. Ray "Kelly" wrote in message ... Hi Ray, Try the edit on line 264 (right hand side) http://www.kellys-korner-xp.com/xp_tweaks.htm -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... I configured the CD writer and DVD/CD rom to be shared in workgroup on my desktop running Windows XP Pro. All the users in workgroup can see the drives but not allow to access. I have given the write access to everyone Can someone advise the possible causes and fixes. Thanks, Ray |
#35
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CD writer and DVD/CD rom can't be shared in workgroup
Kelly, I have run the program downloaded on the computer with CD writer and DVD rom drives but the result remains unchanged. Is there any other way to fix it? Or please let me know where I should check and/or modify the registry. Thanks, Ray "Kelly" wrote in message ... Hi Ray, The former. -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... Kelly, Should I apply it to the pc with CD-ROM drive or the pc to access the CD-ROM drive. Thanks for your further advice. Ray "Kelly" wrote in message ... Hi Ray, Try the edit on line 264 (right hand side) http://www.kellys-korner-xp.com/xp_tweaks.htm -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... I configured the CD writer and DVD/CD rom to be shared in workgroup on my desktop running Windows XP Pro. All the users in workgroup can see the drives but not allow to access. I have given the write access to everyone Can someone advise the possible causes and fixes. Thanks, Ray |
#36
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CD writer and DVD/CD rom can't be shared in workgroup
Kelly, I have run the program downloaded on the computer with CD writer and DVD rom drives but the result remains unchanged. Is there any other way to fix it? Or please let me know where I should check and/or modify the registry. Thanks, Ray "Kelly" wrote in message ... Hi Ray, The former. -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... Kelly, Should I apply it to the pc with CD-ROM drive or the pc to access the CD-ROM drive. Thanks for your further advice. Ray "Kelly" wrote in message ... Hi Ray, Try the edit on line 264 (right hand side) http://www.kellys-korner-xp.com/xp_tweaks.htm -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... I configured the CD writer and DVD/CD rom to be shared in workgroup on my desktop running Windows XP Pro. All the users in workgroup can see the drives but not allow to access. I have given the write access to everyone Can someone advise the possible causes and fixes. Thanks, Ray |
#37
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CD writer and DVD/CD rom can't be shared in workgroup
Kelly, I have run the program downloaded on the computer with CD writer and DVD rom drives but the result remains unchanged. Is there any other way to fix it? Or please let me know where I should check and/or modify the registry. Thanks, Ray "Kelly" wrote in message ... Hi Ray, The former. -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... Kelly, Should I apply it to the pc with CD-ROM drive or the pc to access the CD-ROM drive. Thanks for your further advice. Ray "Kelly" wrote in message ... Hi Ray, Try the edit on line 264 (right hand side) http://www.kellys-korner-xp.com/xp_tweaks.htm -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... I configured the CD writer and DVD/CD rom to be shared in workgroup on my desktop running Windows XP Pro. All the users in workgroup can see the drives but not allow to access. I have given the write access to everyone Can someone advise the possible causes and fixes. Thanks, Ray |
#38
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CD writer and DVD/CD rom can't be shared in workgroup
They need read access to be able to see drive contents, also check if firewall is on it may be
keeping them from seeing. I don't think they will be able to write to it over the network, I think only the local computer can right to CD burner. -- Dave Vair CNE, CNA, MCP, A+, N+ Computer Education Services Corp. (CESC) "Ray" wrote in message ... Kelly, I have run the program downloaded on the computer with CD writer and DVD rom drives but the result remains unchanged. Is there any other way to fix it? Or please let me know where I should check and/or modify the registry. Thanks, Ray "Kelly" wrote in message ... Hi Ray, The former. -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... Kelly, Should I apply it to the pc with CD-ROM drive or the pc to access the CD-ROM drive. Thanks for your further advice. Ray "Kelly" wrote in message ... Hi Ray, Try the edit on line 264 (right hand side) http://www.kellys-korner-xp.com/xp_tweaks.htm -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... I configured the CD writer and DVD/CD rom to be shared in workgroup on my desktop running Windows XP Pro. All the users in workgroup can see the drives but not allow to access. I have given the write access to everyone Can someone advise the possible causes and fixes. Thanks, Ray |
#39
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CD writer and DVD/CD rom can't be shared in workgroup
They need read access to be able to see drive contents, also check if firewall is on it may be
keeping them from seeing. I don't think they will be able to write to it over the network, I think only the local computer can right to CD burner. -- Dave Vair CNE, CNA, MCP, A+, N+ Computer Education Services Corp. (CESC) "Ray" wrote in message ... Kelly, I have run the program downloaded on the computer with CD writer and DVD rom drives but the result remains unchanged. Is there any other way to fix it? Or please let me know where I should check and/or modify the registry. Thanks, Ray "Kelly" wrote in message ... Hi Ray, The former. -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... Kelly, Should I apply it to the pc with CD-ROM drive or the pc to access the CD-ROM drive. Thanks for your further advice. Ray "Kelly" wrote in message ... Hi Ray, Try the edit on line 264 (right hand side) http://www.kellys-korner-xp.com/xp_tweaks.htm -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... I configured the CD writer and DVD/CD rom to be shared in workgroup on my desktop running Windows XP Pro. All the users in workgroup can see the drives but not allow to access. I have given the write access to everyone Can someone advise the possible causes and fixes. Thanks, Ray |
#40
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CD writer and DVD/CD rom can't be shared in workgroup
They need read access to be able to see drive contents, also check if firewall is on it may be
keeping them from seeing. I don't think they will be able to write to it over the network, I think only the local computer can right to CD burner. -- Dave Vair CNE, CNA, MCP, A+, N+ Computer Education Services Corp. (CESC) "Ray" wrote in message ... Kelly, I have run the program downloaded on the computer with CD writer and DVD rom drives but the result remains unchanged. Is there any other way to fix it? Or please let me know where I should check and/or modify the registry. Thanks, Ray "Kelly" wrote in message ... Hi Ray, The former. -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... Kelly, Should I apply it to the pc with CD-ROM drive or the pc to access the CD-ROM drive. Thanks for your further advice. Ray "Kelly" wrote in message ... Hi Ray, Try the edit on line 264 (right hand side) http://www.kellys-korner-xp.com/xp_tweaks.htm -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... I configured the CD writer and DVD/CD rom to be shared in workgroup on my desktop running Windows XP Pro. All the users in workgroup can see the drives but not allow to access. I have given the write access to everyone Can someone advise the possible causes and fixes. Thanks, Ray |
#41
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CD writer and DVD/CD rom can't be shared in workgroup
They need read access to be able to see drive contents, also check if firewall is on it may be
keeping them from seeing. I don't think they will be able to write to it over the network, I think only the local computer can right to CD burner. -- Dave Vair CNE, CNA, MCP, A+, N+ Computer Education Services Corp. (CESC) "Ray" wrote in message ... Kelly, I have run the program downloaded on the computer with CD writer and DVD rom drives but the result remains unchanged. Is there any other way to fix it? Or please let me know where I should check and/or modify the registry. Thanks, Ray "Kelly" wrote in message ... Hi Ray, The former. -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... Kelly, Should I apply it to the pc with CD-ROM drive or the pc to access the CD-ROM drive. Thanks for your further advice. Ray "Kelly" wrote in message ... Hi Ray, Try the edit on line 264 (right hand side) http://www.kellys-korner-xp.com/xp_tweaks.htm -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... I configured the CD writer and DVD/CD rom to be shared in workgroup on my desktop running Windows XP Pro. All the users in workgroup can see the drives but not allow to access. I have given the write access to everyone Can someone advise the possible causes and fixes. Thanks, Ray |
#42
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CD writer and DVD/CD rom can't be shared in workgroup
Kelly, I have run the program downloaded on the computer with CD writer and DVD rom drives but the result remains unchanged. Is there any other way to fix it? Or please let me know where I should check and/or modify the registry. Thanks, Ray "Kelly" wrote in message ... Hi Ray, The former. -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... Kelly, Should I apply it to the pc with CD-ROM drive or the pc to access the CD-ROM drive. Thanks for your further advice. Ray "Kelly" wrote in message ... Hi Ray, Try the edit on line 264 (right hand side) http://www.kellys-korner-xp.com/xp_tweaks.htm -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... I configured the CD writer and DVD/CD rom to be shared in workgroup on my desktop running Windows XP Pro. All the users in workgroup can see the drives but not allow to access. I have given the write access to everyone Can someone advise the possible causes and fixes. Thanks, Ray |
#43
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CD writer and DVD/CD rom can't be shared in workgroup
Kelly, I have run the program downloaded on the computer with CD writer and DVD rom drives but the result remains unchanged. Is there any other way to fix it? Or please let me know where I should check and/or modify the registry. Thanks, Ray "Kelly" wrote in message ... Hi Ray, The former. -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... Kelly, Should I apply it to the pc with CD-ROM drive or the pc to access the CD-ROM drive. Thanks for your further advice. Ray "Kelly" wrote in message ... Hi Ray, Try the edit on line 264 (right hand side) http://www.kellys-korner-xp.com/xp_tweaks.htm -- All the Best, Kelly Microsoft-MVP Windows® XP 2004 Windows MVP "Winny" Award Troubleshooting Windows XP http://www.kellys-korner-xp.com http://www.kellys-korner-xp.com/xp_tweaks.htm Taskbar Repair Tool Plus! http://www.kellys-korner-xp.com/taskbarplus!.htm "Ray" wrote in message ... I configured the CD writer and DVD/CD rom to be shared in workgroup on my desktop running Windows XP Pro. All the users in workgroup can see the drives but not allow to access. I have given the write access to everyone Can someone advise the possible causes and fixes. Thanks, Ray |
#44
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CD writer and DVD/CD rom can't be shared in workgroup
I agree that on a high traffic network such as that, the burning speeds
should be lowered considerably. It is possible to allocate a percentage of the network to allow for a dedicated transfer of this data, but that would reduce the amount of bandwidth available to the rest of the network. I am still unsure as to whether or not Windows will natively supports buring a CD over a network. I do know that such programs exist as I have tested them out. Take a look at Nero NET: http://www.nero.com/us/631934399251526.html ---- Nathan McNulty Mike Matheny wrote: Sorry, from my experience on a 100 mb LAN (and this is at NASA, so it's not idle!). Have never had a coaster burning from the network at top speed. Mike "Nathan McNulty" wrote in message ... It is important to note that most CD and DVD Writers can operate in DMA Mode 2. This is 33 MegaBytes Per Second for the max throughput. The only way you are going to be able to burn a DVD at anthing higher than 8x over a network is if the network is capable of transfering that amount of data which would require a Gigabit Network. Also important to note is that most of these hardware components only operate at about 80% efficiency. This means with DMA Mode 2 (33 MB/s), you really only get around 25 MB/s. Burning 16x DVD's requires about 22 MB/s. One way to make sure that your DVD's and CD's are properly burned over the network would be to limit the speed of writing to handle the amount of data that can be transfered (and allow room for error as well). Here are my suggestions for writing to a CD over a network: For 10 MBit Networks: CD Burn speed of 4x (Though 8x may be possible, I wouldn't recommend it) DVD Burning will not work on a 10 MBit network For 100 MBit Networks: CD Burn speed of 52x (Full speed should be supported) DVD Burn speed of 8x (May lower to 4x on high traffic networks) ---- Nathan McNulty Steve Winograd [MVP] wrote: In article , "Mike Matheny" mikematheny@swbelldotnet wrote: When you share a CD or DVD writer over a network, it's shared as a read-only device, even if you've specified write access. It isn't possible to write to it from another computer. An Ethernet network connection can't supply data fast enough to support CD or DVD burning. Well, you're correct about not writing to the CD writer, but wrong about not being able to supply data fast enough through a network - even the fastest IDE subsystem cannot perform as fast as even a 10mb network. Are you sure about that, Mike? Here are the rated transfer speeds of some systems: Ultra ATA/33 IDE drive interface: 33 megabytes/second Ultra ATA/66 IDE drive interface 66 megabytes/second Ultra ATA/100 IDE drive interface 100 megabytes/second 10BaseT Ethernet: 10 megabits/second = 1.25 megabytes/second 100BaseTx (Fast) Ethernet 100 megabits/second = 12.5 megabytes/second As I interpret those numbers, the slowest IDE disk is almost three times faster than Fast Ethernet. Is that right? I've measured actual speeds for disk copies over a Fast Ethernet network, and the result is typically 50-70 megabits/second. That involves reading one computer's disk and writing the other computer's disk, and it's much faster than a 10 megabit/second network. |
#45
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CD writer and DVD/CD rom can't be shared in workgroup
I agree that on a high traffic network such as that, the burning speeds
should be lowered considerably. It is possible to allocate a percentage of the network to allow for a dedicated transfer of this data, but that would reduce the amount of bandwidth available to the rest of the network. I am still unsure as to whether or not Windows will natively supports buring a CD over a network. I do know that such programs exist as I have tested them out. Take a look at Nero NET: http://www.nero.com/us/631934399251526.html ---- Nathan McNulty Mike Matheny wrote: Sorry, from my experience on a 100 mb LAN (and this is at NASA, so it's not idle!). Have never had a coaster burning from the network at top speed. Mike "Nathan McNulty" wrote in message ... It is important to note that most CD and DVD Writers can operate in DMA Mode 2. This is 33 MegaBytes Per Second for the max throughput. The only way you are going to be able to burn a DVD at anthing higher than 8x over a network is if the network is capable of transfering that amount of data which would require a Gigabit Network. Also important to note is that most of these hardware components only operate at about 80% efficiency. This means with DMA Mode 2 (33 MB/s), you really only get around 25 MB/s. Burning 16x DVD's requires about 22 MB/s. One way to make sure that your DVD's and CD's are properly burned over the network would be to limit the speed of writing to handle the amount of data that can be transfered (and allow room for error as well). Here are my suggestions for writing to a CD over a network: For 10 MBit Networks: CD Burn speed of 4x (Though 8x may be possible, I wouldn't recommend it) DVD Burning will not work on a 10 MBit network For 100 MBit Networks: CD Burn speed of 52x (Full speed should be supported) DVD Burn speed of 8x (May lower to 4x on high traffic networks) ---- Nathan McNulty Steve Winograd [MVP] wrote: In article , "Mike Matheny" mikematheny@swbelldotnet wrote: When you share a CD or DVD writer over a network, it's shared as a read-only device, even if you've specified write access. It isn't possible to write to it from another computer. An Ethernet network connection can't supply data fast enough to support CD or DVD burning. Well, you're correct about not writing to the CD writer, but wrong about not being able to supply data fast enough through a network - even the fastest IDE subsystem cannot perform as fast as even a 10mb network. Are you sure about that, Mike? Here are the rated transfer speeds of some systems: Ultra ATA/33 IDE drive interface: 33 megabytes/second Ultra ATA/66 IDE drive interface 66 megabytes/second Ultra ATA/100 IDE drive interface 100 megabytes/second 10BaseT Ethernet: 10 megabits/second = 1.25 megabytes/second 100BaseTx (Fast) Ethernet 100 megabits/second = 12.5 megabytes/second As I interpret those numbers, the slowest IDE disk is almost three times faster than Fast Ethernet. Is that right? I've measured actual speeds for disk copies over a Fast Ethernet network, and the result is typically 50-70 megabits/second. That involves reading one computer's disk and writing the other computer's disk, and it's much faster than a 10 megabit/second network. |
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