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Computer Maintenance
Disaster Recovery and
Preventative Maintenance
Course Objectives
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6 C Define computer disaster recovery plan
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6 C Design and implement a disaster recovery
plan
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6 C Define preventative maintenance
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6 C Understand the reasoning behind
preventative maintenance
Recovery Plan
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6 C Plans emerged in the mid-1970s and grew as
businesses became more reliant on IT
(Information Technology) and computers in
the workplace
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6 C Today, businesses spend upwards of 5% of
their IT budgets on disaster recovery
planning
Recovery Plan
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6 C What can happen when there is no computer
disaster recovery plan?
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6 C company/customer data is lost
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6 C company operations may become disrupted
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6 C operations may never return to the pre-disaster
state
F 0 6 CStatistics: Businesses that encounter a computer disaster
without a recovery plan
F 0 A 7Half never reopen or close the business within 2 years
F 0 A 7Less than 10% of businesses survive without a recovery plan
Recovery Plan
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6 C What can happen when there is no computer
disaster recovery plan?
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6 C Hardware Failure^ - computers fail in varying
degrees of severity. The worst failures impact the
ability for the computer to function at all
F 0 A 7F 0 2 0Hard drive failure - The computer is unable to load
the operating system
F 0 A 7Video card failure - The screen will be black with no signal.
F 0 A 7F 0 2 0Other component failure - Software can affect hardware by
corrupting its firmware and causing the hardware to
overheat and fail.
Recovery Plan
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6 C Preventative strategies :
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6 C data backup
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6 C redundant hardware setups
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6 C security software
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6 C defragmentation
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6 C proper cooling
Recovery Plan
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6 C Off-Site Backup : Utilizes servers or cloud-based
systems for backup locations
Recovery Plan
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6 C Security software : software applications are
designed to protect the computer and its systems
F 0 6 CF 0 2 0Antivirus, Firewall, and other security software suites allow
for better protection of a computer’s files and systems
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6 C Defragmentation : the process where files on the
hard drive are put back into their proper order,
increasing performance and proper file management
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6 C Proper cooling : heat causes hardware failures.
Proper cooling is necessary for a computer to
operate correctly
Recovery Plan: Detection
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6 C Software notifications :^ Operating systems
today incorporate some form of software or
hardware diagnostic tool to aid the user in
troubleshooting the computer
F 0 6 CF 0 2 0They are designed to notify the user of a potential
malfunction or to run a check for a fault
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6 C System performance test :^ Looking at the
activity log is helpful in troubleshooting the computer
Recovery Plan: Detection
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6 C User Detection : The user generally knows
what is supposed to happen with a particular
software package or operating system. When
things don’t work the way they are supposed
to, a user detects the problem
Recovery Plan:
Corrective
Strategy
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6 C Identify the problem^ : Is the problem software or
hardware related?
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6 C What is affected:^ diagnose hardware failures
using the utility that comes pre-installed with the
operating system. Replace any hardware that might
be faulty. Software is usually diagnosed by the user
or with the appearance of error messages
Recovery Plan:
Corrective
Strategy
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6 C Repair/Replace
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6 C Software:^ repair/restore/reinstall software when
it fails to function correctly.
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6 C Hardware:^ Replace faulty hardware and
reinstall drivers as necessary
F 0 6 CConfirm through testing that the problem has
been resolved
Computer Preventative
Maintenance
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6 C Hardware
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6 C Listen -^ while the computer is running, listen for odd
sounds such as clicking or other abnormal noises
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6 C Clean dust out^ -^ using a vacuum, place suction at
both the exhaust and intake vents on the computer
where buildup is visible
F 0 A 7F 0 2 0This returns airflow to components that generate heat and
allows the machine to run more efficiently while
decreasing the likelihood of failure
F 0 A 7F 0 2 0Canned air is also an option for blowing dust from
a computer. Open the case for best results
Computer Preventative
Maintenance
F 0 6 C Look at computer specs: make note of the hardware
in the machine
F 0 A 7F 0 2 0As a computer ages, it has trouble keeping up with newer software
requirements
