Is it practical to use Zone Manager to make a giant zone to cover the map and block building destruction?

I tried the following commands

• /zone_add
• /zone size "9000 500 9000"
• /zone autolights true nodecay true sleepgod true undestr true name "Whole Map"

Server console is displaying a pretty constant flow of the following message.
"NullReferenceException: Object reference not set to an instance of an object"
I was getting these messages when I had the zone only "500 300 500" but a lot less of them.

The server is a size of 4000.

EDIT: Errors were slowing down my server.
Removed Zone Manager.  :(

You could fashion something similar with TruePVE.  Just put something like "players can hurt players" into the default ruleset.

Thank you for the info.  I ended up using a mod called "DamageControl" which seems to reliably block damage to all building parts and deployables.