Bpp learning Media is an acca approved Content Provider

back-up
and 
archive
strategy should include: 

Regular back up of data (at least daily) 

Archive 
plans 

A 
disaster recovery
plan including off-site storage 
Back-up controls
aim to maintain system and data integrity. We have classified back-up controls as an 
integrity control rather than a contingency control (see later in this section) because back ups should be 
part of the day-to-day procedures of all computerised systems. 
Back up 
means to make a copy in anticipation of future failure or corruption. A back-up copy of a file is 
a duplicate copy kept separately from the main system and only used if the original fails. 
The 
purpose of backing up data
is to ensure that the most recent usable copy of the data can be 
recovered and restored in the event of loss or corruption on the primary storage media.
In a well-planned data back-up scheme, a copy of backed-up data is delivered (preferably daily) to a 
secure 
off-site
storage facility.
A tape 
rotation scheme
can provide a restorable history from one day to several years, depending on the 
needs of the business.
A well-planned 
back-up and archive strategy
should include:
(a) 
A plan and schedule for the 
regular back up of critical data
(b) 
Archive plans
(c) A 
disaster recovery plan
that includes off-site storage (including the cloud) 
BPP Tutor Toolkit Copy

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CHAPTER 9
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CONTROL, SECURITY AND AUDIT 
 
255 
Regular tests should be undertaken to 
verify that data backed up
can be successfully restored
.
The 
intervals
at which back ups are performed must be decided. Most organisations back up their data 
daily, but back ups may need to be performed more frequently, depending on the nature of the data and 
of the organisation.
Even with a well planned back-up strategy some re-inputting may be required. For example, if after three 
hours' work on a Wednesday a file becomes corrupt, the Tuesday version can be restored – but 
Wednesday's work will need to be re-input.
6.2.5 Archiving 
A related concept is that of 
archiving
. Archiving data is the process of moving data from primary storage, 
such as a hard disk, to tape or other portable media for long-term storage.
Archiving provides a legally acceptable