When configuring NFS shares in OceanStor 900O, which items can restrict the permissions of client users? (Multiple Choice)

A customer used Huawei hybrid flash storage to build a primary and backup disaster recovery system, and the production center and remote disaster recovery center adopted asynchronous remote replication technology. The business data, logs and other data in the customer database application are stored in different LUNs, and the remote replication pairs of all LUNs are added to the same consistency group. When the consistency group is synchronized, split or switched between master and slave. At the same time, the remote replication pair of all LUNs in the group also performs synchronization, splitting, or master-slave switchover operations.

Since the first three nodes of Huawei OceanStor 9000 form an ISM cluster, when connecting the equipment, the first three storage nodes NICO need to be connected to the management switch.

Which of the following schemes is usually used for file system level migration?

The FusionStorage software architecture can be divided into service systems and management systems. The ( ) layer of the service system is used for applications to access the standard access interface of the storage system, and supports the SCSI/iSCSI standard access interface protocol.