Whether a T series unified storage system supports the mapping of one LUN to two or more hosts for use

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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.

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

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.

Method used to map LUNs in OceanStor T Series unified storage
You can map LUNs in OceanStor T Series unified storage as follows: 1. The storage system provides two mapping modes: array port mapping type and initiator mapping type. Select a proper mapping mode based on the service requirements and networking. For more details, go to the Setting a Mapping Mode page. 2. If the connection is an iSCSI connection, the mapping can be added through the initiator. For more details, go to the Initiator Mapping Mode (for Fibre Channel Connections and iSCSI connections) page. 3. If the connection is a Fibre Channel connection, the mapping can be added through the initiator or array port. For more details, go to the Initiator Mapping Mode (for Fibre Channel Connections and iSCSI connections) page or the Array port Mapping Mode (for Fibre Channle Connections) page.

Method used to detect new LUNs on the host of OceanStor T/V3 storage systems
If Huawei UltraPath is installed on the host, run the hot_add command to scan for disks. The existing services will not be affected. If the multipathing software is not installed, use the iSCSI network and restart the iSCSI service. If the Fibre Channel network is used, restart the server.

RAID levels supported by OceanStor T Series unified storage systems
OceanStor T Series V100R005 unified storage systems support RAID 0, RAID 1, RAID 3, RAID 5, RAID 6, RAID 10, and RAID 50.

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