www.merge-emed.com ©2006 merge emed. all rights reserved. energize your workflow 2006 user group...

www.merge-emed.com©2006 Merge eMed. All Rights Reserved.

Energize Your Workflow2006 User Group Meeting

May 7-9, 2006

Disaster Recovery

Michael Leonard

Product Manager



May 7-9, 20062

Agenda

• Disaster Recovery – What it means to you• Disaster Recovery Planning• Disaster Recovery Strategies• Open Discussion



May 7-9, 20063

Where we are in the presentation

• Disaster Recovery – what it means to you• Disaster Recovery Planning• Disaster Recovery Strategies• Open Discussion



May 7-9, 20064

Disaster Recovery - What it means to you

• Disaster Recovery (DR) is the ability to recover from a major interruption in operations within an acceptable amount of time, with an acceptable amount of data loss.

• The focus should be on data protection and recovery.



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• The focus here is on your RIS/PACS system, not an enterprise wide disaster recovery plan.

• Your RIS/PACS disaster recovery plan should be a piece of your overall enterprise recovery plan.



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• Disaster Recovery does not mean the same thing to everyone.

• You need to assess your risk tolerance for downtime, data loss, and recovery time.

• As tolerance for loss goes down, costs go up



May 7-9, 20067


Reasons for not investing in DR – Gartner Dataquest Survey, ‘03

• Adoption Hurdles– Difficult to justify the cost– Costs more than primary storage – Difficult to show cost savings

• DR is usually a top down requirement– Current risks not understood– Perceived complexity

• Inertia– Continue old processes

even as business needs change



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• It is easy to look at the cost as a major hurdle• It should be looked as a financial investment

in your business• It comes down to protecting your patient

information and your business



May 7-9, 20069





May 7-9, 200610

Developing a DR Plan

• Conduct a Risk Assessment• Identify Recovery Strategies• Develop Recovery Procedures• Purchase Products and Services• Test and Maintain the Plan



May 7-9, 200611

Risk Assessment

• Identify critical processes– Viewing images– Distributing images– Archiving images

• Decide on tolerance for disruption• Determine alternate procedures



May 7-9, 200612

Risk Assessment• Identify threats

– Power– Fire– Flood

• Minimize Threats– UPS– Fire suppression– An Ark or alternate location– Redundant hardware

– Network interruption– Software problem– Hardware problem



May 7-9, 200613

Identify Recovery Strategies

• Define risks that can be eliminated• Define maximum recovery response time• Determine backup frequency• Define minimum emergency configurations



May 7-9, 200614

Develop Recovery Procedures

• Define recovery teams and their missions• Identify team members and recovery

procedures• Define the disaster recovery tasks for teams



May 7-9, 200615

Purchase products and Services• Based on risk tolerance define DR

requirements• Based on the costs of various strategies

select a DR solution that balances your mix of risk tolerance and affordability



May 7-9, 200616

Test and Maintain the Plan

• Establish a test plan• Perform the test• Document the results• Maintain and update the plan over time



May 7-9, 200617





May 7-9, 200618

Disaster Recovery Strategies

Symantec Corporation

“The Technology of Disaster Recovery”

October, 2003



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Common Disaster Recovery Strategies• Routine backup to removable media with off-

site storage• Remote mirroring of data to a second storage

device over a network• Redundant hardware



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Routine Backup• Backup Database to tape

– DB Tape taken off site daily

• Store STS images in NAS• Store LTA copy of images in

removable media jukebox– Removable media can be taken off

site as media fills or as copies are made

• This approach preserves data but only to the time the last backup was run or last removable media removed from site

• There can be data loss in a major site catastrophe

Server

Network Attached Storage

Main SiteTape Drive

RemovableMedia

Jukebox

LTA

STS

DB



May 7-9, 200621

Split Server Backup• Backup Database to tape

– DB tape taken off site daily• Store STS images in NAS• Store LTA copy of images in

removable media jukebox at a second site

– Removable media can be taken off site as media fills or as copies are made

• This approach can preserve data up until a few seconds prior to the disaster, but it requires extra work by service

• Limited potential loss of data

Satellite Site

Primary Server

Archive Server


Main Site

Tape Drive

RemovableMedia

Jukebox

STS

LTA

DB



May 7-9, 200622

Disk based backup• Backup Database to Disk on NAS• Store STS and LTA images in NAS• Mirror all data to second NAS offsite.

(Images and database backup)• This approach can preserve data up

until a few seconds prior to the disaster, but it requires extra work by service

• Less potential loss of data

Satellite Site

Primary Server

Mirrored Network Attached Storage


Main SiteNetwork Attached Storage

STS

LTA

DB

DB

STS

LTA



May 7-9, 200623

Database Replication

Satellite Site

Primary Server

Mirrored Network Attached Storage

Database Replication

Standby Server


Main Site• Backup Database to Disk on NAS• Store short term and long term

images in NAS• Mirror all data to second NAS

offsite. (Images and database backup)

• This approach preserves database to within a few seconds

• This approach requires high speed access between sites

• Failover hardware is available

• Much less potential loss of data


STSLTA

DB

DB

STS

LTA



May 7-9, 200624

RIS Disaster Recovery Options• The database is backed up to the

standby server• In the event of a disaster the

standby server is brought on line as the primary server

• The back up copy of the database is restored onto the standby server

• This approach preserves data but only to the time the last backup was run.

• There can be data loss in a major site catastrophe

Primary

Server

Main Site

Standby Server

Database backup



May 7-9, 200625

RIS Disaster Recovery Options• The database is stored on a NAS• The Primary server interacts with

the database on the NAS• If the primary server fails, the

secondary server can quickly be reconfigured to access the database on the NAS

• This approach minimizes potential downtime associated with server problems

Primary

Server

Main Site

Standby Server

NAS

storage

Data Base



May 7-9, 200626

Common Disaster Recovery Strategies• There is no one single way to protect data

and create a Disaster Recovery Solution

• Merge eMed can help design a solution that will assist you when you put together Disaster Recovery Plans



May 7-9, 200627





May 7-9, 200628

Open Discussion

• What types of DR planning is currently set up at your institution?

• How comfortable are you with your DR Plans?



May 7-9, 200629

Thank you



May 7-9, 200630

Michael LeonardProduct Manager

[email protected]

www.merge-emed.com ©2006 merge emed. all rights reserved. energize your workflow 2006 user group...

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