How to use the previous LUNs after replacing a host?

To use the previous LUNs after replacing a host, do as follows:
1. After the OS is reinstalled, install corresponding drivers and HBAs for the host.
2. (Optional) For the Ethernet networking, install and configure an iSCSI initiator.
3. Connect cables according to the planned networking mode.
4. Map the previous LUNs to the host, and scan the LUNs on the host.

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