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ITIL :: View topic - Ver 2 ITIL Availability vs Continuity
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Ver 2 ITIL Availability vs Continuity

 
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jayj
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Joined: Jun 18, 2008
Posts: 7

PostPosted: Tue Jul 15, 2008 5:14 am    Post subject: Ver 2 ITIL Availability vs Continuity Reply with quote

Hi guys,

Just to clarify , would it bepossible for someone to guide me thru' the main differences between Availability Management and Continuity Planning function please.

Much appreciated

J
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UKVIKING
Senior Itiler


Joined: Sep 16, 2006
Posts: 3307
Location: London, UK

PostPosted: Tue Jul 15, 2008 5:47 pm    Post subject: Reply with quote

Sure

It is real easy
AM is concerned with how available the service you are providing can be and is

for example

you provide web services to your customes

you have 10 web servers in a cluster - load shared and load balanced

you have 4 network switches in 2 redundant pairs where 5 of the 10 are cdistributed in due to dual NIC

You have a pair of routers connecting out to the world

You have 1 carrier who says that your network connections are divergent -(both not really - as they both go through one central point - further down the line)

Each of the items has an SLA associated with an expected uptime. You can figure the weakest one is the carrier

So how available are you possible ?

ContM is the ability to provide a service after a serious impact

in other words after a disaster, how quickly or slowly can you provide service

the devil is what do you define as a a disaster
what do you define as a service

So your servers in your datacenter are stolen by thief who break into the datacenter - which was owned by your hosting company.

How soon can you be up ?

Do you have an alternate site ?
Do you have all the data for your web site stored somewhere else
etc etc etc
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John Hardesty
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Change Management is POWER & CONTROL. /....evil laughter
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UKVIKING
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Joined: Sep 16, 2006
Posts: 3307
Location: London, UK

PostPosted: Tue Jul 15, 2008 5:49 pm    Post subject: Reply with quote

one more thign.. this should be in the discussion forum as it is not a certification question
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John Hardesty
ITSM Manager's Certificate (Red Badge)

Change Management is POWER & CONTROL. /....evil laughter
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jayj
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Joined: Jun 18, 2008
Posts: 7

PostPosted: Tue Jul 15, 2008 7:11 pm    Post subject: Reply with quote

oops Smile Sorry ...thanks for the assistance
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