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Disaster Recovery 101 Brent Ozar, Quest Software
Brent Ozar SQL Server Expert for Quest Software Former SQL DBA for $7b company inHurricane Alley Managed >80tb SAN, VMware
Today’s Agenda HA vs DR HA Options DR Options Backup Best Practices Learned the Hard Way Resources
Common Backup Schedules Daily fulls Daily fulls, frequent t-logs Weekly fulls, daily diffs, frequent t-logs “What backups?”
High Availability is for: Disaster Recovery is for: Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/melancon/280076809/ Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/meltedplastic/2854777253/
High Availability: Disaster Recovery: ,[object Object]
Asynchronous Mirroring
Log Shipping
SAN Replication
Virtualization Replication
Clustering
Synchronous Mirroring
ReplicationPhoto licensed with Creative Commons, used from:http://www.flickr.com/photos/melancon/280076809/ Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/meltedplastic/2854777253/
HA: Clustering
HA: Synchronous Mirroring
Both HA, DR: Replication
DR: Asynchronous Mirroring
DR: Log Shipping
DR: SAN Replication
DR: Virtualization Replication
Brent’s Personal Favorites High Availability: Disaster Recovery: ,[object Object]
Asynchronous Mirroring
Log Shipping
SAN Replication
Virtualization Replication
Clustering
Synchronous Mirroring
ReplicationPhoto licensed with Creative Commons, used from:http://www.flickr.com/photos/melancon/280076809/ Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/meltedplastic/2854777253/
Backup Best Practices Never back up directly to local disk Back up to file share Back up to different SAN Back flat files up to tape Get the tapes offsite fast If it’s really critical, mirror the backups Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/darwinbell/465459020/
Avoid Agents Lose schedule control Can’t gauge success Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/practicalowl/314989744/
Do Fire Drills Ahead Of Time Build a standalone restore testbed Document how long a restore will take for managers Update it quarterly Trust no one Photo licensed with Creative Commons, used from:http://www.flickr.com/photos/millzero/705902956/
Tale of Two Bookmark Services
http://delicious.com/brento
Worst Case Scenario

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Disaster Recovery 101