This software sets WWPN-based security settings on a device to form an access path. However, when the faulty part such as an adapter (controller) is replaced, the WWPN name may be changed because it is unique.
Devices whose WWPNs are changed when the faulty part such as an adapter (controller) is replaced: All HBAs and bridges such as the LT120, LT130, LT160 and LT230.
Devices whose WWPNs are not changed when the faulty part such as an adapter (controller) is replaced: The ETERNUS series, GR series, LT250, LT270, and Symmetrix, etc.
Operation can be performed as is if WWPNs are not changed. If WWPNs are changed because an adapter (controller) is replaced, security functions of the WWPNs constituting the access path must be changed to those of new WWPNs. This operation is defined as "access path inheritance" and it provides a function that automatically reconfigures the WWPN security settings managed by this software.
Note
When access path inheritance is executed, a host response of the ETERNUS Disk storage system is reset to the default configuration.Therefore, set the host response again by ETERNUSmgr after executed access path inheritance in the changed host response environment.
Although when a new host bus adapter is registered with ETERNUS Disk storage system and set a host response for the host bus adapter by ETERNUSmgr before executing access pass inheritance, the host response is used.
See
For Replacement of the parts of supported device and access path inheritance, refer to "8.3 Replacement of the Parts of Supported Device".
