Storage area networks MDM infrastructure and environment mdm co-server

A storage area network (SAN) is a pool of storage systems that are interconnected to the servers in an enterprise. A SAN administrator is the person responsible for administering the various resources on the SAN.

If a SAN includes an IBM TotalStorage SAN Volume Controller, it must be divided into two distinct zones: a host zone and a disk zone.

Host zone

The host zone is that portion of the SAN that consists of the hosts and a SAN Volume Controller. Hosts can see and directly address the SAN Volume Controller. However, hosts cannot detect and directly address the disk controller systems that are connected to the SAN Volume Controller.

Disk zone

The disk zone is that portion of the SAN that consists of the SAN Volume Controller, the disk controller systems, and the devices attached to the disk controller systems. The SAN Volume Controller can detect and directly address the logical units presented by the disk controllers. The SAN Volume Controller also controls all the physical storage in the disk zone.

(C) Copyright International Business Machines Corporation 2004