create 3rd copy of rpool and have capability to boot from this 3rd drive
I've read the posts about having a 3rd copy taken weekly, nightly etc. this is common for us now using VXFS. We do a copy to the SAN weekly of our boot device. this works well and we can boot from the SAN without incident and do not have to boot cdrom -s and do a whole restore scenario. We simply drop to OBP and boot sandrive.
Now we want this same capability in ZFS but it appears that it is not available.
we have 2 requirements, root_copy to SAN and 3rd and 4th disk in local server. disk 1 & 2 are already the mirrored rpool.