D1: case of a disaster. Disaster recovery is

D1: Discuss different ways of recovering from a disaster.



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In this assignment, I will be discussing different methods of
recovering data from a disaster. I will be also explaining the advantages of
having a backup and how can it help in the case of a disaster.


Disaster recovery is the method that is used in all organization
when a disaster occurs. This recovery prevents losing your important files from
natural and negative events. The negative events are malicious viruses attack
the network or the computer system, while natural events are such floods,
hurricanes, earthquakes etc. Therefore, a backup system is essential for the
organization, so they can trust it if any disasters happen. For instance, there
was an earthquake where the organization is based and it did not have a backup
this could lead to a massive loss of data.

A backup system consists of coping all the files and data that the
organization has on their system, this includes employer’s personal details and
their works, being transferred to a secure storage. Having the data backup, it
is a huge advantage for the company as they can recover all their files lost as
it was back up it. It is crucial to have a disaster backup, but also to keep up
to date the backup. The advantage of having a full backup is that when a user
asks for their files, it can be easily restored. Another advantage is by
backing all the companies’ documents and files, this will prevent the loss of
the files that could too many issues such as losing profits that could occur.
Backing up files it is also a cost saving as the software programs that have
been paid for and lost, having the backup means you would not have to buy the
software programs again.

Differential Backup

Another method to backup is called ‘Differential backup which is a
type of backup that copies all the data changed since the last backup was done.
For example, by doing a differential backup, it will store and backup all the
files that have been modified since the previous full backup. Benefits of a
differential backup are that the backup process is fast, and also when the user
wants to restore all their backed up files from this backup system, the
restoration time is shorter, overall meaning that the process of backing up and
restoring isn’t time-consuming. Having differential backups also doesn’t take
up a lot of disk space either as only recent files and being backed up.

Restore Point

Restore Points should be set all the time, this is basically the
same as a backup but it will not be on an external device, so basically if
something becomes corrupt or stopped working completely they would be able to
access the start-up menu and restore the computer either back to its original
factory settings or to the last time the computer was functioning properly. If
it was a small disaster this would be a good way to recover from it. Imaging is
when there is a clone hard drive and they literally copy the whole hard drive
from the main one to the clone one. This would stay within a set computer or
within the system somewhere and whenever a disaster was to occur as long as the
clone hard drive was not affected then they can use the clone hard drive as the
main one or restore the main hard drive with all the files from the main hard



Incremental backup

An incremental backup is another very useful backup as it backs up
only the recent modification that was done to the previous full backup. For
instance, in an incremental backup was done on Tuesday, and next was on
Thursday, the backup will only save the changes done form Tuesday to Thursday.
The benefit of having an incremental backup is that is a quick way to back up
your files instead of having done a full back up again. Another advantage is
also saving space, instead of doing full backups, this allows the user to
backup more frequently as it takes less time. Therefore, incremental backup is
saving the information that was only changed from the previous full backup, and
the user can choose if he wants to keep all the versions of increments.


Whole system replacements

Whole system replacement can be very costly and it is not
recommended, but if your network or computer system is badly damaged or not
functional then it is required to have the whole system replaced as soon as
possible. Therefore, the company doesn’t lose any money, some organization also
have direct contract with a company called Dark Site. This company will
duplicate the businesses system once it has failed.


Uploading to the cloud

Having a backup of the organization’s network cloud storage or
third party cloud storage it is essential as well as beneficial, because it can
be accessed anywhere in the world as long you have an active internet
connection. For instance, the employee can work from his home therefore if he
been sick or the company is close for any reason he can still finish the work.
But there is one disadvantage of using this method. You might find comfortable
to work at home but your work is unsecure as hackers can steal it easily
because you’re not using a protected network or essential program to protect
your computer.


Tiers of

There are 7 tiers of a system recovery:

1)      This means that there is no off site data
meaning if there is a failure all the data will be gone and there will be no
way of recovering it.

2)      Data backup with no darksite. Backups are
taken but there is no replacement if the system fails.

3)      Data backup with a darksite. Copies of the
data are made and there is a centre available to transfer the data to.

4)      Electronic vaulting. Mirrored copies of the
system start are continuously maintained.

5)      Point in time copies. This means that data
backups are the same as what is on the network at the same time.

6)      Transaction integrity. The backups are made as
soon as work is saved to make sure they are identical.

7)      Zero or near zero data loss. For very fast
systems where sudden fault could result in some minor data loss.

8)      Highly automated, business integrated
solution. Now the system will do all the thinking for you.



In my conclusion, I have talked about security policies and it
would benefit the business in the long run. Although there may be some
disagreements between employees regarding the policies it would all be put into
place in order to keep the system, employees, and customers safe. I have
explained different method on how to secure your system, and lastly, I have
explained the different method to back up your computer in case of disaster