Bill Hayden

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• Bill Hayden
• Director, Data Services
• Edward Jones

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Data Virtualization

• Define data virtualization
• Data virtualization History
• The future of data

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Definition

• Data exists at disparate sites
• Updates accepted at each site
• Capable of running independently
• Synchronized by replication technology

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Data Replication History

• Backups taken daily
• Sent off site via PTAM
• Stored or sent to second site
• 24-hour replication latency
• Really only good for disaster recovery

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Replication Today

• Mix of technologies
• Database replication
• File system replication
• Disk based replication
• Clustering
• Publisher/Subscriber model
• Remote copies read only or inaccessible
• Consistent points of time

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The Vision

• Update anywhere on ALL data
• Sites can be geographically disbursed
• Data is synchronized in seconds
• Status is reported up the stack

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Issues

• Distance
• Conflicts
• Race Conditions
• Split brain
• Database of record

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Industry Status

• DatabasesAlmost there!
• File servicesNFS and CIFS
• Best hope is file sharing appliances
• They own the file system and the disk
• File systems
• Disk replication
• Needs to become logical
• Read-only at the target site

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Thank You
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• Questions