5 - 4: Disaster Recovery

Question 1

Disaster Recovery

Answer 1

Designed to restore a business as quickly as possible

Question 2

Disaster types

Answer 2

Environmental or human

Question 3

Disaster sources

Answer 3

Internal or external

Question 4

Communication

Answer 4

Initial activation, status updates, tactical

Question 5

Basic steps

Answer 5

Contain, recover, triage

Question 6

Recovery time objective

Answer 6

Target time to restore a service to operation

Question 7

Recovery point objective

Answer 7

Maximum time period from which data may be lost

Question 8

Recovery service level

Answer 8

Percentage of a service that must be available

Question 9

When does recovery end?

Answer 9

When operations are restored to %100

Question 10

Backup media

Answer 10

Tape, disk-to-disk, write to cloud

Question 11

Backup types

Answer 11

Full, snapshot, differential, incremental

Question 12

Full backup

Answer 12

Complete copy of the data

Question 13

Snapshot backups

Answer 13

Quickly created point-in-time

Question 14

Differential

Answer 14

Backups of data that changed since the last full backup

Question 15

Incremental

Answer 15

Changes since last full OR incremental

Question 16

Backups are most commonly restored because of….

Answer 16

Human or technical error

Question 17

Non-persistence

Answer 17

Back up only unique data

Question 18

Live boot media

Answer 18

Using a device to run software, able to recover data from a device with a corrupted operating system

Question 19

Disaster recovery site

Answer 19

Alternate data processing facility

Question 20

Hot sites

Answer 20

Fully operational data centers with continuous operation and equipment and data present. Can activate at a moment’s notice

Question 21

Cold sites

Answer 21

Stacked with core equipment, networks, and environment, but takes a long time to activate for resumed use

Question 22

Warm sites

Answer 22

Stacked with all needed equipment and data, not maintained in parallel

Question 23

Offsite storage

Answer 23

Keep geographically distant to avoid the same risks, manual transfer or site replication to maintain data (SAN or VM)

Question 24

Testing goals

Answer 24

1) Validate that the plan functions correctly

2) Identify necessary updates

Question 25

Types of testing

Answer 25

Read-through, walk-through, simulation, parallel test, full-interruption test

Question 26

Read-through

Answer 26

Ask each team member to read the plan and provide feedback/review procedures

Question 27

Walkthroughs

Answer 27

Everyone reads through the plan at the same time AKA tabletops

Question 28

Simulation

Answer 28

Uses a practice scenario with the entire recovery team

Question 29

Parallel test

Answer 29

A simulation including activation of the DR plan itself, activating the recovery environment but not switching operations

Question 30

Full-interruption

Answer 30

Switching operations to the alternate environment and attempt to recover from it

Question 31

After action report

Answer 31

A formal review of every BC/DR event. Should be written after every event, even if successful

Question 32

Executive summary

Answer 32

Written in an AAR assuming the reader will only read that section

Question 33

AAR components

Answer 33

Versions, external factors, other variables, summary of facts leading into the event, 5 W questions, lessons learned section, conclude with clear next steps