[storage-discuss] Concat'ed pool vs. striped pool

[Stephen Yum]

When creating a ZFS pool, it seems the default format is striping. But is there a way to create a pool of concatenated disks? That is, let's say I have 2 local disks (SATA, 100GB each) and 1 iscsi partition (from remote Solaris server, 80GB).

So, if I issue a command:
 
# zpool create -f mypool c0t1d0 c0t2d0 c2t010000E0815E35D500002A0049313F80d0 (for example)

I would get 'mypool' that is 280GB in size, right? But this would be in striped mode. As a stripe, if any one of the disks were to fail, mypool would be toast.

But, if mypool was a concatenation, things would get written onto the c0t1d0 first, and if any one of the subsequent disks were to fail, I should be able to recover everything off of mypool, as long as I have not filled up c0t1d0, since things were written sequentially, rather than across all disks like striping.

Is my understanding correct, or am I totally off the wall here?

And, if I AM correct, how do you create a concatenated zpool?

S