Parity Group ID

Parity group numbers.

Priority

Priority of external paths.

Port ID

Port connected to the external storage system for the local storage system.

External WWN

External system port identification number.

LUN ID

When the external path is connected to the selected external volume, the LUN ID displays.

Status

Status of external paths.

• Unknown: The status of the mapping path is not known.

• Checking: The system is checking the mapping path status.

• Blockade: The mapping path is blocked.

• Normal: There are no problems, the system is usable.

• Disconnect: The external system or one of its mapped volumes has been intentionally disconnected.

• External Device Setting Changed: An external system setting has been changed. For example, the path definition was deleted, or the external system itself was replaced by another device.

• LDEV Size Reduced: The external volume’s capacity was reduced.

• Not Ready: The reply from the external system was NOT READY.

• Illegal Request: The reply from the external system was ILLEGAL REQUEST.

• Command Aborted: The reply from the external system was ABORTED COMMAND.

• Busy: The external system is busy.

• LDEV Reserved: The external system is reserved.

• Response Error: The external system is blocked because of an abnormal reply.

• Initiator Port: The port attribute of the external system has been changed to the initiator port.

• Unknown Port: The port attribute of the external system is not known.

• Cannot Detect Port: The path has been removed or the external system port cannot be found.

• Timeout: Processing was retried because an abnormal reply was returned; however, processing has timed out.

• Passive: The external system port is not active. Port status is normal but the port is not used for I/O.

• Standby: The external system port is standing by. The port status is normal but cannot receive I/O.

• Target Error: Port failures, such as controller blockade, are detected on the external system.

• Unavailable: The reply from the external system was Unavailable. The external system demands to change the connected port. Once the status becomes Unavailable, the primary path is changed to an alternate path in Standby status. When the primary path is available, the status changes to Normal.

• Backoff: The reply from the external system was Backoff. A temporary error has occurred in the external volume and the path is waiting for recovery. The primary path is not changed to the alternate path immediately. After recovery, the status changes to Normal.

• Destage Failed: The writing of data from cache memory to the volume has failed.

Target Port Asymmetric Access State

When the path mode is ALUA, the port state of the external storage system displays.

• Active/Optimized: The performance is in a good state.

• Active/Non-Optimized: Data can be sent and received, but the performance is inferior to Active/Optimized.

A space displays in one of the following cases:

• The path mode is other than ALUA.

• Mapping of an external volume is not completed.