When you make changes in your SAN configuration, you might need to rescan your storage. You can rescan all storage available to your host, cluster, or datacenter. If the changes you make are isolated to storage accessed through a specific host, perform rescan for only this host.


In the vSphere Web Client object navigator, select a host, a cluster, a datacenter, or a folder that contains hosts.


Select Actions > All vCenter Actions > Rescan Storage.


Specify extent of rescan.



Scan for New Storage Devices

Rescan all adapters to discover new storage devices. If new devices are discovered, they appear in the device list.

Scan for New VMFS Volumes

Rescan all storage devices to discover new datastores that have been added since the last scan. Any new datastores appear in the datastore list.