[ceph-users] Strange Ceph architect with SAN storages

Hi Yesterday one of our customers asked us a strange request. He asked us to use SAN as the Ceph storage space to add the SAN storages it currently has to the cluster and reduce other disk purchase costs. Anybody know can we do this or not?! And if this is possible how we should start to architect this Strange Ceph?! Is it good or not?! Thanks for your help. Mohsen Mottaghi