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Bill Wilson wrote:
from bill@xxxxxxxx IDE drives are fast but can't carry the load of SCSI disks. An analogy is cars a porche is fast util you stick 10 ton in the back Then a ten ton truck is quicker. Use IDE for up to 4 users and SCSI above. As an example we have customers using older style SCSI drives running at 20 Mb / sec 12 of them in a RAID 10 which support large data base apps running up to 200 users.
There was a guy building IDE RAID arrays on uk.comp.os.linux (I think), probably find the discussion on groups.google.com. I'd always understood IDE couldn't hack big loads, but it has been refined and at the time he made a reasonable case for the price performance favouring IDE, at least for his purposes. He got shouted down a lot, but clearly knew more about the innards of ATA and such than most of his detractors. (Anyone who can get more than 3 or 4 IDE devices working at the same time on PC hardware earns my respect ;-) I'd still take some convincing to build a big database on IDE disks, but my mind isn't totally closed on the issue. Heck I've seen enough Oracle databases running of one disk servers to know not many people need the old fashioned techniques to scale to moderate size. Anyway worth a read if you can find it, at an idle moment. -- The Mailing List for the Devon & Cornwall LUG Mail majordomo@xxxxxxxxxxxx with "unsubscribe list" in the message body to unsubscribe.