A.Now NAS is geared towards unstructured data storage, such as many department employees for office files and centralized storage

B.DAS, NAS, SAN are all external storage, so storage resource sharing can be easily realized

C.SAN is more used in data scenarios to store structured

D.NAS is characterized by putting the server file system in the storage so that the server needs to share data through the network

A.Backup to solve the recovery of data loss

B.Backup cannot solve the recovery of data damage

C.Backup cannot solve the recovery of historical data

D.Backup can directly take over the business

A.True

B.False

A.4

B.3

C.1

D.2

A.False

B.True