By registering all disk units connected to servers with GDS, it becomes possible to perform the centralized management of all operations on the disks from the GDS operation management interface.
Since disk units managed by GDS are virtualized as logical volumes, there is no need for the application to handle physical disks.
As to disk units, there are no limitations on physical configurations (single disks, disk arrays, multipath), connection configurations (local connection, shared connection), and intended use (system disks, local disks, cluster switch-over disks, cluster shared disks). Centralized management can be performed on any disk units.
Whether or not to mirror the managed disk can be determined as necessary. For example, a user may want to manage a disk array with sufficient availability, without carrying out mirroring.
Figure 1.18 Centralized Disk Management
