On Sunday 14 Sep 2003 7:14 pm, Jack Coates wrote: > On Sun, 2003-09-14 at 10:48, lorne wrote: > > ...> > > One thing everyone need to remember is that the IDE raid > > solutions that are available right now aren't really raid as most > > have come to expect raid. They use cpu processor power. This puts > > an extra load on the processor. The scsi raid systems have their > > own on board raid processing power. I currently use a mirrored > > system and was disappointed with performance. I'm happy to stay > > with it though, so if I lose a drive I haven't lost data. So if > > you are thinking pure peformance, you should probably not use the > > cheap typical ide raid. There are some more expensive ide raid > > controllers that do ues real hardware raid though. I just don't > > recall any off hand. > > ... > > and furthermore, I'm under the impression that many of the IDE > boards/chips are using their own interleaving strategy that renders > the volume unusable with another vendor's solution. Please correct > me if I'm wrong about that. IMHO, as long as you're taking the CPU > hit you might as well just use LVM and have soft RAID -- you know > you'll still be able to get to the data if the disk controller > barfs or if you have to move the drive to another computer.
Obviously a lot to think about. I'm not sure I'd be happy to use raid0 on my main box, though I can see that it might be an advantage for this purpose. I'll have to think about that. I've no intentions of buying a mobo with raid, though. If I go for it it will not be an on-board solution. Anne -- Registered Linux User No.293302 Have you visited http://twiki.mdklinuxfaq.org yet?
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