Does a V3 series unified storage system support the mapping of one LUN to two or more hosts for use?

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Yes, one LUN of a V3 series unified storage system can be mapped to two or more hosts for use after you cluster multiple hosts and add the LUN mapping to the host group. After you map the LUN to the host group, the LUN will provide storage space for all hosts in the host group. For details, see Creating a Mapping View.

Other related questions:
Whether a T series unified storage system supports the mapping of one LUN to two or more hosts for use
Yes, one LUN of a T series unified storage system can be mapped to two or more hosts for use after you cluster multiple hosts and add the LUN mapping to the host group. After you map the LUN to the host group, the LUN will provide storage space for all hosts in the host group. For details, see Adding a Mapping.

Number of hosts and host groups that a LUN is mapped to in OceanStor T Series unified storage systems
One LUN in OceanStor T Series unified storage can be mapped to a maximum of eight hosts or host groups.

LUN mapping of OceanStor V3 storage systems
After a host group and a LUN group are added to a mapping view, the application server, host group, and LUN group are logically associated. Then the application server can detect the LUN in the LUN group. For details about creating a mapping view, click Creating a Mapping View .

For V3 series unified storage V300R001, how can I query the mapping relationship between LUNs and hosts?
For V3 series unified storage systems V300R001, you can obtain the information about LUNs and its mapped hosts from the mapping view. You can identify the corresponding relationship between storage systems' hosts and their connected application servers in the live network through parameters such as host names and host operating systems. You are advised to use a host name that is easy for you to recognize the host's corresponding application server. For details about how to view mapping views, see Viewing Mapping View Information.

RAID levels supported by unified storage systems
RAID policies (levels) supported by unified storage systems: 0, 1, 3, 5, 6, 10, 50

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