6. jason phippen - veritas
TRANSCRIPT
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VERITAS Confidential
Disaster Recovery – Beyond
Backup
Jason Phippen – Director Product and
Solutions Marketing, EMEA
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VERITAS Confidential
Agenda
• Disaster Recovery Concepts• Backup – Last Line of Defence
• Enhancing Backup with Replication
• Remote Site Replication and Mirroring• Clustering for Disaster Recovery
• Questions
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• Recovery Point Objective (RPO) –
Point in time to which applications data must be recovered to resumebusiness transactions
• Recovery Time Objective (RTO) –
Maximum elapsed time allowed before lack of business function severelyimpacts an organization
Disaster Recovery Concepts
Days MinsHrsWks Secs
Recovery Point
Mins DaysHrsSecs Wks
Recovery Time
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• How much data loss can you endure?
Recovery Point Objective (RPO)
Tape Backup w/
Offsite Vaulting
Replication
Mins DaysHrsSecs WksDays MinsHrsWks Secs
Recovery Point Recovery Time
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• How much downtime can you endure?
Recovery Time Objective (RTO)
Recovery from Tape
Geographic Clustering
Mins DaysHrsSecs WksDays MinsHrsWks Secs
Recovery Point Recovery Time
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• “Far Enough” away
– How far away from the main site? – What resources should it have?
• Site Strategies (Hot, Warm, Cold)
• Considerations
– Fault zones – Flood plains
– Power grids
– Climate zones
– Locality relative to other sites
(e.g., airport) – Remote customers and employees
Choosing a Recovery Site
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Backup – Your last line of Defense
• Redundant systems replicate user errors, virusesand data corruption
• System or component redundancy (RAID,
mirroring) cannot replace backup
• Backup tapes may represent the last valid copy
of data
• Backups are your last line of defense against
total data loss
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Enhancing Backup with
Replication
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• Replicating the Backup Catalog server
– Shave hours off a tape restore strategy
– No need to re-catalog tapes
– No need to rebuild the backup/restore server
– Tape restores can begin immediately
Backup Tape Copies
Sent to Offsite
Site A Site B
Backup
Clients
Backup
Master/Media
Server
Replicate Backup Catalogs
Replication-enhanced Backup
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Remote Site Replication and
Mirroring
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Replication and Mirroring
Key Requirements… • Must be “far enough” away
• No windows of datacorruption at secondary
Synchronous
Asynchronous
Recovery Point
MinutesDays Hours SecondsWeeks
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4
1
2
3
Strengths
• Maximum data currency (RPO)
• Data available immediately at secondary (RTO)
Weaknesses
• Potential to impact application performance
• Data writes lag by network latency
• Write commit latency across nodes
Primary Site Secondary Site
Synchronous Replication
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Strengths
• Maximum performance
• May have less application impact
• Data available immediately at secondary (RTO)
Weaknesses
• Secondary may lag primary (RPO)
• Potential for data corruption
(not a weakness for VERITAS)
2
1
3
4
Primary Site Secondary Site
Asynchronous Replication
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Secondary Site
Application
Volume Manager
SAN Fabric
• Lower hardware costs
– Groups physical disks into logical volumes
– Hardware Independence,
• Greater IT productivity
– Simplified administration of heterogeneousenvironments
– Proactive management of applications• Increased application ROI
• Can mirror over SAN distances
Primary Site
Logical Volume ManagementRemote Mirroring
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Clustering for Disaster
Recovery
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Campus / MAN Disaster Recovery WAN Disaster Recovery
Clustering for Disaster Recovery
WAN
Clustering, Replication, Global Clustering
MAN
Clustering ,
Replication
Clustering,
Remote Mirroring
OR
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Campus / MAN Disaster RecoverySt-r-e-t-c-h Cluster Over A SAN
* Distance may varydepending upon
infrastructure
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Global Clustering
• Geographically dispersed sites linked by public carrier wide areanetwork
• Each site aware of the configuration and state of all of the sites
• Direct site level migration in event of catastrophe
• Global Availability Management
• Single point of monitoring and administration
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Replication
Site Migration
Wide Area Availability
Application
ClusteringGlobal
Clustering
Application
ClusteringGlobal
Clustering
Application
ClusteringGlobal
Clustering
Failover
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VERITAS
Cluster Server
Volume Manager/
Foundation Suite
NetBackup/
Backup Exec
VERITAS Global
Cluster Manager
VERITAS Volume
Replicator
- NetBackup Vault
- BMR / IDR
Local Multi-site
A v a i l a
b i l i t y R e q u i r e
m e n t s
VERITAS: Uniquely Qualified (HA and DR)
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Questions