On 6/19/07, Joe S <[EMAIL PROTECTED]> wrote:
Thanks for all the comments. Very helpful.
I have another question. The six disk raidz2 pool works, but I noticed in
Richard Elling's blog that a raidz/raidz2 pool has the read performance of a
single drive (unless I misread something). What if I crea
Joe S wrote:
> Thanks for all the comments. Very helpful.
>
> I have another question. The six disk raidz2 pool works, but I noticed
> in Richard Elling's blog that a raidz/raidz2 pool has the read
> performance of a single drive (unless I misread something). What if I
> create 2x three disk raidz
> > If you have the same type and columns, then you have the same
> > availability expectations. If instead you take a 5 disk raidz and add a
> > 2 disk stripe, you're dramatically changing the availability
> > expectations. So the force is required.
>
> Certainly, but adding a mirror doesn't de
On Mon, Jun 18, 2007 at 08:57:29AM -0700, Darren Dunham wrote:
>
> I think it's mainly to keep you from doing something silly without
> meaning to.
That's certainly a good reason. :)
> If you have the same type and columns, then you have the same
> availability expectations. If instead you take
> > The configuration of any vdev that you create does not constrain you
> > with any vdevs you want to add to the pool in the future. You can start
> > with any of your three choices above and then add any of the other three
> > to the same pool.
>
> 'zpool add' will complain if the number of di
On Sun, Jun 17, 2007 at 01:22:34PM -0700, Darren Dunham wrote:
>
> The configuration of any vdev that you create does not constrain you
> with any vdevs you want to add to the pool in the future. You can start
> with any of your three choices above and then add any of the other three
> to the sam
> After getting a few replies on this, I've realized the following:
>
> If I have 3 disks in a raidz vdev and I want to add more storage in the
> future, I would need add another 3 disk raidz vdev.
This is not a constraint that ZFS forces on you.
> If I have 4 disks in a raidz2 vdev and I want t
My understanding is that if I create a 6 disk raidz2,
# zpool create tank raidz2 disk0 disk1 disk2 disk3 disk4 disk5
I cannot add more disks to this set. I cannot expand this. I have to destroy
the raidz2 it and recreate it if I want to increase capacity.
Whereas with 2 way mirrors, i can just k
