Linstor Gateway iscsi use diskless node to provide iscsi targets

Dear all,
I am setting up linstor gateway on proxmox nodes as below:
node 2 & 3: disfull nodes
node 1: diskless
I have created iscsi target with:

linstor-gateway iscsi create iqn.2001-09.com.linbit:k8s-storage 172.49.172.199/24 512G --resource-group=k8s-storage

The diskless node is hosting iscsi target.

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Is there any setting to change this behaviour so that diskful nodes will host iscsi target? or this is by design?

Thanks for all advices in advance.