[Gllug] Production system - Linux 2.4.24, LVM and cciss

[Mike Brodbelt]

On Mon, 2004-01-12 at 08:48, Martin A. Brooks wrote:
> On Mon, 2004-01-12 at 08:41, Dale Gallagher wrote:
> > > RAID5 buys you more space, RAID10 a little more redundancy. There was
> > 
> > I _specifically_ want the added redundancy of RAID 1+0. 
> 
> Actually, I fail to see why 0+1 on its own offers you more redundancy. 
> If you want more redundancy, you need to add some hot spares.

4 disks as RAID 10 can survive simultaneous failure of two disks, as
long as the right two disks fail :-). 4 disks as RAID 5 can't. In the
real world, I'm less than convinced it matters - hot spares are, as you
say, more useful.

Mike.

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