private vlan on trunks

Hi guys,

i want a layer 2 isolation for some webservers. The webservers are virtualised on a physical server that is connected over a lacp trunk to a cisco sg500 switch.

On that switch is also a pfSense with a lacp trunk connected.

Now what i want to achive is a primary vlan 300 and seperate isolated vlans from 301-310 that only can communicate with vlan 300.

Is that possible with my cisco sg500 switch? I know that switch has Private Vlans but i can only configure it for a access port.

Best Regards Dave