5. Disaster Recovery Planning

Question 1

Disaster Recovery Planning ( DRP)

Answer 1

Is undertaken to reduce risks related to the onset of disasters and other events. It’s closely related to business continuity planning.

Question 2

Groundwork for DRP

Answer 2

Begins in BCRP activities such as the business impact analysis, critically analysis, establishment of recovery objectives, and testing.

Question 3

The business impact analysis and critically analysis

Answer 3

Help to prioritize which business processes (and, therefore, which IT systems) are the most important

Question 4

Key Recovery Target

Answer 4

Specify how quickly IT applications are to be recovered.

Question 5

Testing of DRP plans

Answer 5

Can be performed in coordination with tests of BCP plans to more accurately simulate real disasters and disaster response.

Question 6

Recovery Time Objective (RTO)

Answer 6

The period from the onset of an outage until the resumption of service. RTO does not mean that the system /process has been recovered to 100 % of its former capacity,

Question 7

Recovery Point Objective (RPO)

Answer 7

RPO is the period for which recent data will be irretrievably lost in a disaster.

Question 8

Pricing RTO and RPO capabilities

Answer 8

The shorter the RTO or RPO for a given system, the more expensive it will be to achieve the target.

Question 9

Recovery Objective Development

Answer 9

• Conduct BIA
• Establish RTO, RPO recovery targets
• Develop technical architecture and process to support recovery targets
• Implement technologies

Question 10

Hot Sites

Answer 10

An alternate processing center where backup systems are already running and in some state of near-readiness to assume production workload.

Question 11

When hot site is the best choice

Answer 11

For systems whose RTO targets range from 0 to several hours, perhaps as long as 24 hours.

Question 12

Warm Sites

Answer 12

An alternate processing center where recovery systems are present, but at a lower state of readiness than recovery systems at a hot site

Question 13

When warm site is appropriate

Answer 13

For organization whose RTO figures range from roughly one to seven days.

Question 14

Cold sites

Answer 14

An alternate processing center where the degree of readiness for recovery system is low.

Question 15

When is the cold site appropriate

Answer 15

When outage exceed 7 to 14 days. The advantage of a cold site is its low cost.

Question 16

Mobile site

Answer 16

A portable recovery center that can be delivered to almost any location in the world

Question 17

Cloud sites

Answer 17

Organizations are using cloud hosting services as their recovery sites

Question 18

Reciprocal Sites

Answer 18

A data center that is operated by another company

Question 19

Recovery and Resilience technologies

Answer 19

Once targets have been established, the next major task is the survey and selection of technologies to enable recovery time and recovery point objectives to be meet.

Question 20

Replication

Answer 20

Activity where data is written to a storage system us also copied over a network to another storage system

Question 21

Synchronous replication

Answer 21

writing data to a local and to a remote storage system is performed as a single operation, guaranteeing that data are identical.

Question 22

Asynchronous replication

Answer 22

writing data to the remote storage system is NOT kept in sync with updates