Whether the WWN of the HBA changes after the board of a blade server is replaced

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Does the WWN of the HBA change after the board of a blade server is replaced? Yes. After the WWN changes, the Linux host cannot discover the mapped LUNs. Add the initiator for the host on the ISM again, and run the hot_add command to scan for mapped LUNs.

Other related questions:
Reinstall the HBA driver after replacing the HBA
If the driver of the original HBA in the server has been installed, you do not need to reinstall the driver after replacing the HBA with an HBA of the same model.

Method used to query the WWN of the HBA card on an application server
Method used to query the WWN of the HBA card on an application server: FAQ-How can I view the WWN of an application server HBA

Whether the HBA board can be used together with the SFIU board
No. The HBA board must be used together with the TN13FIU02 board.

Blade server
A server blade is a cost-effective High Availability High Density (HAHD) server designed for high-density computing. It is a server chassis housing multiple thin, module electronic circuit boards, known as server blades. Each blade functions as a system mainboard.

Do I need to change the ESN of the license after replacing the main control board of the U1900 voice gateway?
After replacing the main control board of the U1900 voice gateway, you do not need to change the ESN of the license. The ESN used to apply for the U1900 license is bound to the subrack. The ESN is changed only when the subrack is replaced.

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