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					Task 5: Design, implement and test backup and recovery
according to disaster recovery plan

            I’ve sent you a memo asking you to perform a group of
            tasks related to developing a design plan for
            performance, implementation and testing of a backup
            procedure.

 Task       Later on, you’ll be asked to perform the back up
 5          procedure that you design in this task.
            You can find my memo and a relevant section of our
            Disaster Recovery Contingency Plan under Tools.



                                                                    Your coach, Stephanie Melton, Network
                                                                    Administrator at Forth Management
                                                                    Associates



Deliverables
             1. Develop a backup procedure according to the Disaster Recovery
                Contingency Plan.
             2. Decide on appropriate alternative media according to the backup
                procedure.
             3. Develop a backup schedule, including a naming convention to be
                used.
             4. Perform a backup viability analysis.
This Learning Pack shows you how to develop an efficient, robust and timely
backup facility that covers backup schedule and restore procedures. The backup
facility is extremely important for any organisation, because to lose data can
mean the difference between a business remaining viable or going under.
Therefore, the data backup needs to be designed efficiently, the resources and
devices used for backup need to be appropriate and the backup schedule needs
to satisfy the organisational timeline.

Learning outcomes
After completing this topic you will be able to:
                 Create and/or review the organisational backup schedule.
                 Determine and test restore procedures according to the
                  organisational guidelines.

Before you start
You should already be able to carry out a basic backup procedure for data that is
saved on a stand-alone computer.

Check your understanding
Do you think you already have the knowledge covered in this topic? Try and
answer the following questions to check your understanding.



1) Efficient backup procedures:
        Have no standards



        Follow the child, parent, grandparent rule

        Depend upon the backup package being used

Correct. Efficient backup procedures follow the child, parent, grandparent rule.
2) Backup devices are:
     Immaterial to the backup performed



     Critical to the backup performed

     Selected based on data requirements

Correct. Backup devices are selected based on data requirements.

3) Backup schedules should
     Meet organisational and statutory guidelines



     Meet organisational guidelines

     Be developed according to disaster recovery plan which supports organisational guidelines

Correct. Backup schedules should be developed according to the disaster recovery plan which
supports organisational guidelines.

Activity 1: Choose a backup device
The reason for designing and implementing a backup is to attempt to prevent a disaster from occurring.
Within an organisation, system servers are critical devices to manage and provide functionality for a
network. Server configurations are complex and sophisticated. Data relating to the operating system
configuration of both server and client machines should not be overlooked.
4) Choose the appropriate backup media for this process of backing up a server
   configuration and explain the reasons for your choice.




  Feedback

  It is good practice to install the server operating system on a separate hard disk drive to the
  data being held on the server.

  In this case, the most appropriate media for such a backup is a recordable CD. The server file
  system configuration can be written and backed up to the CD. The CD is created as auto-
  bootable, and when the server disaster occurs the backup media is placed in the server CD
  drive. The machine is started and the configuration backup can be readily restored to the
  server hard disk drive.

Activity 2: Create a backup schedule
There are several types of backup procedures that can be used, but in order to create an efficient
schedule we need to know the considerations for backup and the implications for equipment, staff and
time.
5) List the considerations for developing a backup schedule.




  Feedback
  Some considerations for developing a backup schedule are:

              What is to be backed up? Eg local data, server data and users’ data
               such as ‘My Documents’.
              What is the backup media? Eg local data to CD, floppy disk; server
               data to tape, CD, DVD, hard drive.
              What is the critical nature of the data to be backed up?
              How frequently should it be backed up?
              Who is to perform the backup?
              How will backup media impact on the backup process?

Activity 3: Define a naming convention
You have data to be backed up every day from August 1 through to September 1 of the same year. On
Mondays, you do a full backup and every other day you perform a differential backup, except for Fridays
where you perform an incremental backup. You are using the child, parent, grandparent rule of backups.
6) Develop a naming convention and show the appearance of the backup files for
   Mondays, Wednesdays and Fridays backup.




Feedback

  Naming convention might be FUL for full backup, DIF for differential backup and INC for
  incremental backup, followed by the date in Japanese notation, followed by the data
  description being backed up.

  As an example, the backups for the first week of August, if the year is 2004, might look like:

  FUL040802_server

  DIF040804_server

  INC040806_server

  On Monday August 9 you would create a new full backup and then a decision would need to
  be made as to whether to alter the label of the backup of the FUL040802_server to identify
  that this backup was to become a parent such as FUL040802_server_PNT or whether to just
  keep track of the backup. Alternatively, a stamp could be used to display parent or
  grandparent on the backup label as it became this class of backup.

  Whatever the decision made at design time, it would be placed in the disaster recovery
  contingency plan documentation.

To find out more about backup and restore, follow links to ‘backup’ and ‘restore’
at the following websites:
              EMC website at: http://www.emc.com/
              DAX Archiving Solutions website at: http://www.daxarchiving.com/
Terms

Disaster recovery plan

       commonly known as DRP, describes recovery processes to get the
       business or organisation back in operation as soon as possible in the
       event of a particular disaster; it usually assumes the worst possible
       scenario and identifies how the organisation could get up and running in
       the least possible time
Master files

       files that are updated periodically, so they are protected by having
       successive versions (generations); the most recent version of the master
       file may then be recreated, if necessary, from a previous version
Statutory

       something like a rule or organisation that exists due to legislation (the
       law)
Transaction files

       files that are used to update master files
Utility programs

       programs used to configure or maintain systems, or to make changes to
       stored or transmitted data

				
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