Kiyan Azarbar wrote:
>
> I would like to run RAID5 (3 disks in the array, maybe some room in the future
> for one spare disk). Right now I've got my linux root partition (well, pretty
> much everything is under /, it's meant to be a server) on /dev/hda (4 gig
> Quantum CR). I have 3 12 gig Quantum EX's: /dev/hdb, hdc, and hdd. I can set
> up RAID5 like this but in the HOWTO (and common sense) it states that running
> 2 disks on the same IDE channel is not a good idea. Slave mode is supposed to
> slow things (although if there aren't paraller reads or writes on one channel,
> what's the big deal?) <interrupted>
You _always_ read in parallel when using raid5. That's what makes it
fast.
> <continued> and also if a master drive goes down there's supposed to
> be a chance it'll bring down the whole channel, failing TWO disks which is an
> unrecoverable error.
>
> So my question is, should I get the Promise Ultra66?
>
You should have bought SCSI disks. They may would have been cheaper,
too, because you need only one controller for three disks. (Sorry -could
not resist :-)
<snipped rest>
Marc
--
Marc Mutz <[EMAIL PROTECTED]> http://marc.mutz.com/
University of Bielefeld, Dep. of Mathematics / Dep. of Physics
PGP-keyID's: 0xd46ce9ab (RSA), 0x7ae55b9e (DSS/DH)
