You can review the storage array type policy (SATP) and path selection policy (PSP) that the ESXi host uses for a specific storage device. You can also display the status of all available paths for this storage device.
You can access the path information from both the Datastores and Devices views. For datastores, you review the paths that connect to the device the datastore is deployed on.
The path information includes the SATP assigned to manage the device, the PSP, a list of paths, and the status of each path. The following path status information can appear:
- Paths available for issuing I/O to a LUN. A single or multiple working paths, currently used for transferring data, are marked as Active (I/O).
- If active paths fail, the path can quickly become operational and can be used for I/O.
- The path is disabled and no data can be transferred.
- The software cannot connect to the disk through this path.
If you are using the Fixed path policy, you can see which path is the preferred path. The preferred path is marked with an asterisk (*) in the Preferred column.
For each path you can also display the path's name. The name includes parameters that describe the path: adapter ID, target ID, and device ID. Usually, the path's name has the format similar to the following: