Is ZCS NFS-Safe? Can it run entirely with it's data store entirely on an NFS-mounted volume?
If it is, can it recover from server failure with a separate host starting the application from the same datastore, and recover from the transaction logs it keeps?
Has anyone deployed this on NetApp filers?
Does the filesystem support file locking reliably?
Is it performant?
As for the recovery, that will work, as long as the recovery host is set up correctly (same user names/ids, /etc/sudoers /etc/ld.so.conf /etc/syslog set up right)