Which describes cascade replication on a Dell Unity XT?

Which describes cascade replication on a Dell Unity XT?
A . Synchronous replication of a file resource from Sites A to B. then B to C then C to D
B . Asynchronous replication of a block resource from Sites A to B then B to C then C to D
C . Synchronous replication of a block resource from Sites A to B. then B to C. then C to D
D . Asynchronous replication of a file resource from Sites A to B then B to C. then C to D

View Answer

Answer: D

Explanation:

Cascade replication refers to the replication of data from one site to another, in a sequential or cascading manner. In the case of Dell Unity XT, cascade replication refers to the asynchronous replication of a file resource from one site (site A) to another (site B), then from site B to another site (site C) and so on. This means that data is replicated from one site to another in an orderly fashion, and each site functions as both a source and a target for replication. This allows for multiple copies of the data to be kept in different locations, providing increased data availability and disaster recovery capabilities. It’s important to note that cascade replication can also be used for block resources but is usually asynchronous.