Abstract: In a method for partitioning SAS storage within a blade server chassis, where the blade server chassis may include one of a plurality (N) of server blades, the same plurality (N) of SAS storage blades or any combination thereof up to a total of N blades, in order for the plurality of SAS storage blades to be securely shared by the plurality of server blades, a pair-based zoning scheme may be implemented whereby if a server blade and a disk blade occupy neighboring slots in the blade server chassis, a pair of the server blade and the disk blade may be set to belong in the same zone. Partitioning of SAS expansion ports within the blade server chassis may be accomplished by providing exclusive access of a single SAS expansion port to a server blade located in an even slot.