AVS doesn't know anything about ZFS, so it can't tie to a pool per se. That was 
a design decision to make AVS more flexible. But the "g zfs-pool" parameter" 
has the effect of tying the devices of the pool into an AVS group. That has 
meaning. It ensures that data written to the devices of the pool are written on 
the AVS secondary node's devices in the same order they were written on the 
primary.

By using ZFS mirroring through iSCSI, you are in effect creating a network 
mirror. That's not really the same thing as replication. Replication is more of 
a one-way deal.
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