When this network is configured on the WAN-side of your router/firewall. You can only use it there. But addresses of that /29 can be used with NAT to point to any internal system. That could be in different internal networks.
You would reduce you valuable public address-space from five usable addresses to two addresses. If your plan is to separate servers, you could also put them all into one subnet and do the separation on the switch-level with port-ACLs, private VLANs or private VLAN Edge.