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

Use this procedure if you want to limit the rescan to storage available to a particular host or accessed through a particular adapter on the host. If you want to rescan storage available to all hosts managed by your vCenter Server system, you can do so by right-clicking a datacenter, cluster, or folder that contains the hosts and selecting Rescan for Datastores.


In the vSphere Client, select a host and click the Configuration tab.


In the Hardware panel, select Storage Adapters, and click Rescan above the Storage Adapters panel.

You can also right-click an individual adapter and click Rescan to rescan just that adapter.


To discover new disks or LUNs, select Scan for New Storage Devices.

If new LUNs are discovered, they appear in the device list.


To discover new datastores or update a datastore after its configuration has been changed, select Scan for New VMFS Volumes.

If new datastores or VMFS volumes are discovered, they appear in the datastore list.