NFS is a method of sharing disk files between UNIX operating systems. NFS is also a file system protocol that allows applications on a client to store and obtain data from server disks through a network.

Where cannot the data replication technology used for disaster recovery be implemented?

The object storage services provided by OceanStor9000 (compatible with Amazon S3 and OpenStack Swift) all provide a unified RESTful API. Clients can access storage nodes through STfulAPI to achieve data storage.

For performance reasons it is often necessary to buy a lot of smaller capacity disk drives.

N8000 provides fencing function to avoid split brain. Which of the following descriptions of fencing function is wrong?