Disaster prevention and recovery methods

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Become a Certified IT Support Technician
:

In this course we will look at the basics of disaster prevention and recovery methods in an IT infrastructure.

We will cover the methods used to
protect data and prevent loss
when catastrophic
catastrophic events
events occur.

Backup and Restore:

Within the framework of disaster prevention, an important point concerns the procedures
and restoration procedures
.

The company must secure and protect the data, using well-known and reliable backup procedures.

In the event of a disasterIn the event of a disaster, restoration procedures must be implemented in order to return to normal operation as quickly as possible.

Indeed, the term disaster reduction is somewhat misleading.
is a bit misleading,
because there is no 100% guaranteed way to prevent a disaster.

On most OS, there are different backup media:

.

There are three levels of data backups :

.

.

.

.

Keep in mind that protecting data involves a choice between cost, effort, ease of implementation and risk of loss associated with that data.

Backup test:

Now let’s move on to the
backup test
.

The
backup test
is to test in a controlled environment the ability of technicians to restore a system after a
disaster
.

You must perform
restoration simulation exercises
to be ready when these skills are needed most.

Indeed, you can easily invest a lot of time, money and energy to perform
daily backups
but if a
disaster
you can’t recover files or restore systems successfully, it defeats your investment!

.

It is therefore necessary to put in place
strategies for data retrieval exercises on a regular basis.
on a regular basis.

Uninterruptible power supplies (UPS)

Let’s see now how to
protect the power supply of an IT system in case of power cuts or fluctuations of the electrical network.

Computer equipment needs adequate and regular
and regular electricity for their
for their continuous operation.

It is therefore important to provide a
emergency power supply system
in case of power failure. It is at this level that the
inverters
s, also known as
UPS
.

An inverter is in fact an electrical
electrical device that provides backup power to a computer when
to a computer when the power source fails.

It should be noted that an inverter differs from an
auxiliary or backup power

or backup power system,
because it does not generate electricity by itself. With its battery, it provides near-instantaneous protection against input power interruptions for a relative duration.

The operating time of the UPS is generally
short
but sufficient to start a backup power source or to properly shut down equipment.

A UPS is generally used to
protect computer equipment
such as computers computers, servers, network equipment, etc.. A power failure could cause severe service interruptions or data loss.

Companies need to secure electronic components with an inverter as best as possible. This includes personal computers, network equipment, etc.

And so, for disaster prevention purposes, each server must run on its own UPS to
protect the valuable contents of the disks.

Disaster prevention: the surge protector:

Let us pass this time the
protection of the devices against overvoltages
.

.

Electricity companies provide alternating current to businesses and residences.

And sometimes, this alternating current can vary due to changes in the electrical distribution network or due to weather. It can therefore undergo dips, dips or surges.

These power surges can
cause fires
Therefore, it is important to
protect the connected devices.

This is the role of the
surge protector
!

A
surge protector
is indeed a device intended to
protect electrical appliances
against voltage peaks in alternating current circuits.

If there is a power surge or spike, a
surge protector
simply breaks the circuit and the device loses power.

Protecting data: Local storage

Disaster prevention asks us about the differences between storing
between storing backups in the cloud and storing them locally!

.

Let’s start with
local storage!

Local storage consists of
backing up data
workstations on an external drive such as a hard drive, a USB key or a storage server on a local network.

In this case, you do not need the Internet to access the backups, but only a connection to local storage media.

However, local storage has several disadvantages that can be listed:

Protecting data: Cloud storage

Cloud storage is a model of computer data storage in which digital data is stored and managed by a provider. Services are usually customized and available immediately.

.

Indeed, the
cloud storage
is gradually replacing local backups!

Cloud backups are available everywhere. As long as you are connected to the Internet and have access rights to the service, you can access this data.

There are several cloud storage service providers today
cloud storage
.

We can name the most popular ones as :

To have a cloud storage space, you just need to take a subscription package from a
subscription package with a provider
provider and you access your backups anywhere in the world!

It should be noted that cloud storage also has its drawbacks! These include:

Disaster Prevention: Account Recovery Options

Let’s move on to the last point which is the
Recovering an account
!

.

The
account recovery
provides you with options to recover an old password or reset the account with a temporary password.

What do you do when you can’t remember a username or password?

Usually, there are different ways to
recover an account
such as :

.

.

.

.

.

.

In the case of a domain environment
environment, the domain administrator
will manage all the settings for
password or account recovery
.

On the
Microsoft OS
it is possible to create a password recovery disk.

This allows the recovery of the account in case you forget your password.

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Cette publication est également disponible en : FRANÇAIS