Refer to Exhibit:

Which type of replication is represented in the exhibit?

A.
Cascade/multihop, synchronous + disk buffered

B.
Cascade/multihop, synchronous + asynchronous

C.
Triangle/multitarget, synchronous + disk buffered

D.
Triangle/multitarget, synchronous + differential resync

Explanation:
Three-site Replication: Cascade/Multiphop (Synchronous + Disk Buffered)
In the cascade/multihop three-site replication, data flows from the source to the intermediate
storage array, known as a bunker, in the first hop, and then, from a bunker to a storage array at a
remote site in the second hop. Replication can be performed in two ways, synchronous+ diskbuffered or synchronous + asynchronous.
Synchronous + Disk Buffered: This method employs a combination of local and remote replication
technologies. Synchronous replication occurs between the source and the bunker; a consistent
PIT local replica is created at the bunker. Data is transmitted from the local replica at the bunker to
the remote replica at the remote site. Optionally, a local replica can be created at the remote site
after data is received from the bunker. In this method, a minimum of 4 storage volumes are
required (including the source) to replicate one storage device. RPO at the remote site is usually in
the order of hours for this implementation.
EMC E10-001 Student Resource Guide. Module 12: Remote Replication