External device setting changed

• LU path settings might have been changed by LUN Manager. Either change the settings back to the values used when the volume was mapped, or perform the Delete LU and then Add LU operations using Universal Volume Manager.

• The volume’s access attribute might have been changed by Data Retention Utility. If the volume is protected by the access attribute, release the protection.

Illegal request or

Response error

• If the volume is a pair volume, it might be protected because of the pair status. If this is the case, change the pair status or delete the pair.

• The volume’s access attribute might have been changed by Data Retention Utility. If the volume is protected by the access attribute, release the protection.

Cannot detect port

• There is a problem with connection to the external storage system. The possible causes are:

- Fiber cable connection. Make sure the fiber cable is connected correctly.

- Fibre Channel port settings. The topology settings between the port connected to the external storage system and the target port might not match. Make sure that the Fibre Channel ports are set properly using LUN Manager.

- Switch settings. If the external storage system is connected through switches, make sure that the switch settings are correct.

• The host group LUN security might have been enabled by LUN Manager. If so, disable it.