Multipathing is a technique that lets you efficiently and reliably use more than one physical path to transfer data between the host and an external storage array.
VMware supports different types of storage architectures as follows:
- Active-active storage system: All controllers (or all ports) are active; that means all the paths are active unless a path fails. In this storage, it is possible to access a LUN simultaneously through all the storage paths that are available without significant performance degradation.
- Active-passive storage system: Usually one controller is active (on a specific LUN) and the second is passive (but could be active on another LUN). If access through the active storage port fails, one of the passive ...