Bill Hayden
Director, Data Services
Edward Jones
1
Data Virtualization
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Define data virtualization
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Data virtualization History
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The future of data
2
Definition
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Data exists at disparate sites
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Updates accepted at each site
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Capable of running independently
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Synchronized by replication technology
3
Data Replication History
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Backups taken daily
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Sent off site via PTAM
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Stored or sent to second site
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24-hour replication latency
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Really only good for disaster recovery
4
Replication Today
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Mix of technologies
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Database replication
File system replication
Disk based replication
Clustering
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Publisher/Subscriber model
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Remote copies read only or inaccessible
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Consistent points of time
5
The Vision
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Update anywhere on ALL data
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Sites can be geographically disbursed
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Data is synchronized in seconds
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Status is reported up the stack
6
Issues
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Distance
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Conflicts
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Race Conditions
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Split brain
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Database of record
7
Industry Status
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Databases—Almost there!
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File services—NFS and CIFS
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Best hope is file sharing appliances
They own the file system and the disk
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File systems
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Disk replication
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Needs to become logical
Read-only at the target site
8
Thank You
9
Questions
10