Data security week 7 blog
Why
is Backups important
The purpose of the backup is to create a copy of data that
can be recovered in the event of a system failure. System failures can be the
result of hardware or software failure, data corruption, a malicious attack
(virus or malware), or accidental deletion of data. Backup copies allow data to
be restored would provide the means of restoring to a previous point
after the incident has been dealt with.
Backups is a vital method of storing data and keeping it
safe, when you take your time and set up a good backup strategy you can ensure
that data can easily be recovered. Storing copies of data on a separate device for
example USB stick, an external hard drive, A disk ah storage system, cloud
storage or tape drive can protect you
against data loss or corruption. most of these devices need to be at the
location of your PC or laptop When trying to restore but you can store the
devices in a safe place until you need it of your choosing. With a cloud
storage you can use it anywhere as long as you got Internet because your data
is stored in the cloud.
Strategies
now we went over why it is important to back up your data and
the functions no we're going to talk about strategy. It is a good idea to get
into a routine on backing up your data either weekly or monthly basis.
There are many ways that you can make you are back up routine.
But there is four main ways that backup scan be divided into:
1.
Full backup - A full backup is exactly that – a
backup of every single file and folder stored on the system. No matter what
kind of tech trouble you run into, you’ll have access to the lost data. The
drawback? Full backups take longer and require more space.
2.
Incremental backup - Incremental backups work
like this: an initial full backup is made. Then, subsequent backups only store
the changes made since the previous backup. With this strategy, restoring data
is a little slower, but the backup process itself is much quicker and requires
less space than a full backup.
3.
Differential backup - Differential backup is
very similar to incremental backup. First, an initial full backup is made.
Subsequent backups only store the changes made. Differential backups require a
little more storage space than incremental backups, but they do offer faster
data recovery.
4.
Mirror backup - Mirror backup systems take an
exact copy of the data. The key benefit of mirror backups is that they don’t
store old, outdated files – when a file is deleted from the source, they
disappear from the backup, too. This means mirror backups don’t demand as much
storage space as full backup systems
The 3 -2-1 rule is a strategy that is States
that three copies of data should be made so for example one original copy and
two backups the two separate storage devices should be used and the one copy
should be kept a different location.
Cloud backup is a service in which the data and
applications on a business's servers are backed up and stored on a remote
server. Businesses opt to back up to the cloud to keep files and data readily
available in the event of a system failure, outage, or natural disaster. The
importance of testing backups lets you verify the necessary data is
available for recovery. Plus, testing helps you learn how to actually implement
recovery following a data loss. If a backup test fails, you can take the steps
needed to ensure you don't actually lose valuable information.
Data recovery
Data Recovery is the process of retrieving data from
damaged, failed, or corrupted storage. media. Data is being retrieved from
different storage devices such as hard disk drives, storage tapes, CDs, DVDs,
RAID, and many other electronic storage devices. So, when you delete something whether
it is on purpose or by accident the data is not actually deleted it works like it
will remove the data and free up space for more data to be stored on that
device so it's like essentially pretended to be deleted so the device thinks
that you've got more space to put more storage onto it.
The first thing I would do when trying to recover data is
check my recycling bin sometimes you accidentally delete file and it's just
hidden in your recycling bin. If the file that you were looking for was not
there I would Perform a backup from my last initial backup. This should recover
the deleted file.
Disk Drill is A programme available for Microsoft Windows
and Mac iOS, disk drill is a software programme that recovers data. It performs
a sophisticated scan to identify and rebuild hundreds of different file types
as works document, photos, videos and Music.
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