When you make changes in your ESXi host or SAN configuration, you might need to rescan your storage adapters. You can rescan all adapters on your host. If the changes you make are isolated to a specific adapter, rescan only this adapter.

Use this procedure if you want to limit the rescan to a particular host or an adapter on the host. If you want to rescan adapters on 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.


On ESXi, it is not possible to rescan a single storage adapter. If you rescan a single adapter, all adapters are rescanned.


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.