@s-pam i'd say use them, always use the. Only a few KB of space and could be every handy. We have 3 servers in the pool so overlooked requirement for full pool recovery. (p.s we didn't fail, it's during DR testing it was flagged)
we had the backups on already and if this had been a real issue, would have saved a lot of bacon!!
turn it on ! (and check you can get it without a running XOA for quicker restore in full meltdown.)