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.


Launch the vSphere Client and log in to a vCenter Server system.


  1. In the vSphere Client, select a host and click the Configuration tab.
  2. Select a rescan option.
    Option Description
    Storage In the Hardware panel, click Storage, and click Rescan All above the Datastores or Devices panel.
    Storage Adapters In the Hardware panel, click Storage Adapters, and click Rescan All above the Storage Adapters panel.
    Note: You can also right-click an individual adapter and select Rescan to rescan just that adapter.
  3. Specify extent of rescan.
    Option Description
    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.