JD Edwards & Peoplesoft 2 _ Mark Elley _ Real word experiences disaster recovery.pdf

The most comprehensive Oracle applications & technology content under one roof The most comprehensive Oracle applications & technology content under one roof

Real World Disaster Recovery

Mark Elley

The most comprehensive Oracle applications & technology content under one roof

What is a Disaster? Definition: dis·as·ter noun /diˈzastər/ disasters, plural

•  A sudden event, such as an accident or a natural catastrophe, that causes great damage or loss of life- 159 people died in the disaster

•  - disaster struck within minutes of takeoff •  An event or fact that has unfortunate

consequences- a string of personal disasters •  - reduced legal aid could spell financial disaster •  A person, act, or thing that is a failure- my perm is

a total disaster


Disaster

Bad Perm


Types of Disaster •  Natural Disaster

– Earthquake – Tsunami – LiquefacEon

•  Other Disaster – Fire – Flood –  Infrastructure failure


SENDAI Japan

March 2011


Japan -‐ Earthquake & Tsunami


Building Damage


Infrastructure Damage


Tsunami


Christchurch New Zealand

September 2010

& February 2011


Christchurch -‐ Earthquakes


Building Damage


DestrucEon & Human Tragedy


Infrastructure Damage


Brisbane Australia

January 2011


Inundated


Stock Recovery


Server Recovery


All of the Disasters above have occurred in the last

12 Months


What about Localised Disasters?


Disaster -‐ FIRE


Disaster FLOOD


Infrastructure Failure

1998 Auckland CBD Three Week Outage Container Ships plugged into the grid to provide some supply…


Could Your Business Survive A Disaster


Disaster Recovery

•  Focussed Overview of Recent Experience •  Predominantly with JD Edwards in mind

– Purpose •  Lessons learned from the field • What works best / What doesn’t? • What fits your business expectaEons for:

–  Return to OperaEon (RTO) ? –  How long can the business survive without this core system

•  Is distance a factor?


Business ConsideraEons •  Human Resource Issues

–  Staff dealing with personal & family issues –  Key staff oeen have to step up beyond the call!

•  Site Access – Days to get an engineer to give the OK to site access –  Building irreparably damaged –  Servers & server room destroyed –  Physical constraints – i.e Roading – And Many More!!!


Provoking Thought •  What is in place today if a disaster occurred •  Do you have a true DR strategy or HA only? •  Could you be confident that your business would conEnue to operate in the event of a disaster?

•  Can you put a cost to each hour of outage for your business?

•  Can you keep doing business with system users in other ciEes?

•  Does your business need up to the Nano-‐second data or point in Eme?


Typical Infrastructure Test / DR Produc6on


Scenario One •  Earthquake – city wide impact – huge destrucEon – server room within the cordon – liquefacEon in the server room – building structurally unsound.

•  Decision made early to switch to DR soluEon in another city.

•  But!!!


Scenario One -‐ LiquefacEon


Scenario Two •  Earthquake – city wide impact – huge destrucEon – server room within the cordon – no power to server room – limited access.

•  DR site was in the midst of change – switching to DR might be painful.

•  Generator onsite within 24 hours •  Decision made to stay with the producEon system located on the customer site.

•  But!!!


Scenario Two – No Electricity

Do you have access to one of these?


Scenario Three •  Earthquake – city wide impact – huge destrucEon – server room within purpose built data centre – limited outage.

•  Cross city DR site did not need to be invoked •  Within an hour all other sites were working as normal.

•  Local staff could focus on family and conEnue to access systems remotely as infrastructure allowed


Lessons Learned •  Do you have split ProducEon & Test / DR infrastructures? –  Test / DR ensures that your DR is ready for acEon!

•  Network & Infrastructure are constantly used (tested) •  Do you have a DR strategy? – GREAT!

– Have you tested it recently? – Did you deploy a JDE full package?

•  A ‘Purpose Built’ data centre is best for ProducEon -‐ Why?

•  Test your DR strategy regularly


What Worked – What Didn’t? •  Data ReplicaEon – sorted J •  Server images or backups in hand?

– Where is the last full backup of this machine? – What do you mean you backed up the structures ONLY!!!

– Where are the JDE installaEon CDs? •  Don’t neglect your deployment server •  Ensure your client technologies are covered •  Any business criEcal 3rd party systems?


Is Distance a Factor? •  Absolutely – you don’t want your DR too close – RIGHT?

•  Too far apart – shipping consideraEons – Comms costs consideraEons for ANZ

•  Too close and both instances are affected

•  20km+ = Ideal minimum separaEon


In Summary

The solu6on that I have seen work best is as follows.

•  Split ProducEon and Non ProducEon (Test/DR) infrastructures •  ProducEon hosted in a purpose built hosted facility where security,

power circuit redundancy, generators and diesel fuel stocks are available to ensure 24x7 security and electricity supply.

•  Non producEon either hosted in an alternate facility or on site at the customer’s premises 20+ kms from the producEon data centre.

•  100Mb metropolitan LAN or equivalent available to service communicaEons requirements between the two sites

•  Test the soluEon regularly & ensure your backups are appropriate


Build Your DR SoluEon to match your

Business ExpectaEons

No CEO/CIO/CFO affected by the Christchurch earthquakes has wanted to reduce their disaster

recovery protecEon aeer recent events.

Most have requested a full DR review Many have implemented stronger soluEons.


Disaster Recovery ARE YOU READY

JD Edwards & Peoplesoft 2 _ Mark Elley _ Real word experiences disaster recovery.pdf

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