DISASTER RECOVERY AND BUSINESS CONTINUITY Flashcards
Requirements of a good plan
A plan should allow the firm to:
Minimize the extent of disruption, damage and loss
Establish and alternate method for processing of
information
Resume normal operations quickly
Train and familiarize personnel to perform emergency operations
A plan should include:
Priorities - most critical
Insurance
Backup approaches
- batch system
- online database and master file systems
Specific assignments in case of disaster
Periodic testing and updating of the plan
Documentation of the plan
Batch system
Grandfather-father-son method
Online databases and master file systems
Checkpoint
Rollback
Back up facilities
Reciprocal agreement
Hot site
Cold site
Internal site
Mirrored web serverCheckpoint
similar to grandfather-father-son
checkpoints the system
makes a copy of the database at checkpoint date
checkpoint file is stored on a separate disk or tape
if problem occurs, the last checkpoint updated will be used to restart the system and updated with subsequent transactions
Rollblack
undo the changes made to a database to a point at which it was functioning properly
Backup facilities
reciprocal agreement hot site cold site internal site mirrored web server
Reciprocal agreement / Mutual aid pact
agrement between to organizations
with compatible computer facilities
to aid each other with their data processing
in the event of a disaster
Hot site
ROC recovery operations center Approach
a commercial disaster recovery service
that allows a business to continue operations
in the event of a disaster
the hot site has all the computer equipments needed
Cold site / Empty shell approach
similar to hot site
customer provides and installs all the equipments needed
less expensive
takes longer to start operating
Internal site
use company’s own site for backup in the event of disaster
Mirror web server
exact copy of the website
best way to back up
Specific assignments
arranging for new facilities computer operations installing software establishing data communication facilities recovering vital records arranging for forms and supplies
Flowcharting
procedure to graphically show
the sequential flow of data and operation
document preparation
authorization
storage
decision making
Types of flowchart
system flowchart program flowchart internal control (audit) flowchart or document flowchart
System flowchart
graphic representation of
data processing application
that depicts the interaction of
all computer programs in a system
