Question

(1) What is a potential advantage of array based replication over and above hypervisor and application based replication?

A. More tightly integrated with applications

B. Requires less hardware

C. Requires smaller replication links

D. Offloads replication work from the host

(2) What kind of scenarios does storage replication assist in recovery from?

A. Replication data corruption

B. Virus

C. User accidentally deleting data

D. Power failures and natural disasters

(3) Which of the following is being described here: This kind of replication is tightly integrated with the application and is ideal for quick and effective recovery?

A. Synchronous replication

B. Asynchronous replication

C. Hypervisor based replication

D. Application based replication

(4) Storage replication is commonly a major part of what business process?

A. Accounting

B. Business Continuity Planning

C. Financial forecasting

D. Data Mining

(5) Which of the following is not a drawback of synchronous replication?

A. Increased application I/O latency

B. limited distance between the source copy and replica copy

C. Have to spec network links for peak throughput

D. Data loss in the event that the replica volume has to be used

(6) Which of the following replication technologies offer guaranteed zero data loss if recovering from a replica volume?

A. Synchronous replication

B. Asynchronous replication

C. Three site cascade topology

D. Application layer replication

(7) Which of the following is an advantage of asynchronous replication when compared with synchronous?

A. The remote site can be further away

B. Asynchronous replication replicates less data than synchronous

C. Asynchronous replication can work at the block level

D. The remote storage array can be a different model

(8) The amount of time it takes to recover a system is referred to as what?

A. Recovery Point Objective (RPO)

B. Recovery Time Objective (RTO)

C. Recovery Method Objective (RMO)

D. Recovery Objective (RO)

(9) Which of the following will cause a space efficient snapshot to use a lot of space?

A. High rate of change in the source volume

B. Having a RAID 5 protected snapshot volume

C. High read activity on the source volume

D. Making the snapshot copy read-only

(10) Which of the following is not commonly a trait of a snapshot?

A. Point in Time copy

B. full block copy

C. Space efficient

D. Pointer based

Answer 1

1) Answer  D

The work is offloaded from the servers to the storage device also Hosts (Servers) are not required at the second site or to be attached to the second SAN/NAS

2) Answer  D

Power failures and natural disasters

3) Answer  D

This captures and tracks all data changes and can re-create virtualized snapshots at any point in time — also known as continuous data protection (CDP). The time-stamped data is then replicated to one or more sites which makes it fast.

4) Answer  A

Accounting as it requires a managed service in which stored or archived data is duplicated in real time.

5) Answer  D

Data loss in the event that the replica volume has to be used.In the context of synchronous replication, this means that the write is considered finished only when both local and remote storages acknowledge its completion. Hence, zero data loss is guaranteed, but overall performance is slowed down.

6) Answer  A

Synchronous replication,in this the write is considered finished only when both local and remote storages acknowledge its completion. Hence, zero data loss is guaranteed, but overall performance is slowed down.

7) Answer  A

The remote site can be further away. Data is replicated only in predetermined time periods (this could be hourly, daily, or weekly). The replica can be stored in a remote DR location, as the replica does not have to be synchronized with the primary location in real time.

8) Answer  B

Recovery Time Objective (RTO)

9) Answer  A

 High rate of change in the source volume

10) Answer  B

Full block copy.

Because snapshots are not full copies of the original data, they should not be relied upon as complete backup.