Paul: More on this. Sorry to break it up. The SCSI card you choose is an issue with Linux. You must use one that is supported by the distribution. If you don't get some good input on this them call me and I'll give you some suggestions. I understand a good one (a bit costly) is Adaptec 2940 UW PCI SCSI Card which will allow you to run fast hard drives. Hope that helps. Bye-thanks_TED
Paul Brown wrote: > > Mark, > > > I have been searching for the hardware compatibility list, but I > > think that it's not up to date yet. My question is that Does readhat > > 6.2 support Ultra 3 160M/s scsi card and scsi hard drive? if yes, which > > brand should I use ? How about Apaptec 19160 or 29260 U3W scsi Card ? > > The U2W works because it *is* in the compatibility list. U3W? Unknown. > > > Also, I am not able to receive any messages back from all of the redhat > > list, even my own messages for over one week. I have been tried > > to subscribe several times, but still doesn't work. Do you know what > > the problem is. > > There are mail routing issues on the net these days. Be patient, the > mail admin will sort it out. > > Paul > > --------------------------------------------------------------------------- > Paul B. Brown [EMAIL PROTECTED] > President > Brown Technologies Network, Inc. http://www.btechnet.com/ > > Systems and Applications Design, Development, Deployment, and Maintenance > --------------------------------------------------------------------------- > > -- > To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" > as the Subject. Paul: UDMA33 and UDMA66 (as I undertand it) are DMA transfer protocols. A Hard Drive will we either IDE traditional (pio I thik it is called) DMA transfer. UDMA (Ultra DMA) 33 is faster, and UDMA66 is even faster again. For big Hard Drives one needs fast spin rates like 7200 and I understand that in order to keep that data transfer efficient then UDMA66 is a good compliment. Apparently, UDMA66 was for some time associated with SCSI operation but now it appears to be common with IDE hard drives. I understand that the IDE controller chips are responsible (at least some part of the traditional CPU board chip set) for facilitating standard/traditional IDE DMA transfer rates, UDMA33 and UDMA66 transfer rates. Apparently, it has nothing to do with Linux and more to do with the hardware. For example, If I have a UDMA33 Hard drive to install on a Slackware Linux where the chipset does not support UDMA33, then DMA operation will automatically revert to the slower standard/traditional speed. Similarly, if I have a Red Hat 6.2 Linux OS that has a chipset on the CPU board that only supports UDMA33 then a Hard drive with UDMA66 will revert to UDMA33 operation. Or if that same board did not support either UDMA66 or UDMA33, DMA operation would revert to the slower standard/traditional transfer speed. If you are going to buy a CPU board buy one with UDMA66 chipset support and buy hard drives that support UDMA66 DMA protocol. The Linux that you install doesn't care. But it will know about the protocol and will tell you so in the boot up messages. I got this information from a guy that occasionally provide my network with support assistance when I'm over my head in problems. Bye-thanks_TED
