Re: IDE expansion/RAID card
On Thu, 15 Aug 2002, nate wrote:
> Chris Jantzen said:
> > In RAID you can sustain a single drive failure and continue functioning.
Depends on the RAID scheme being used.
> > A master/slave drive relationship guarantees a two drive failure. So if
No, it does not. However, a controller or cable failure will kill both
drives at once, and some failure modes of one drive might cause data
corruption on the transfers of the other (effectively killing the entire
channel).
It also kills any RAID performance if both drivers are in the same RAID
array, since no fully-parallel transfers can be made.
> > you're in it for the redundancy at all, setting drives up on
> > master/slave with IDE is a recipe for disaster. Period.
I agree. If you want redundancy, do it right and use two different
channels at the very least.
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
Reply to: