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Disaster Recovery 101
 

Disaster Recovery 101

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    Disaster Recovery 101 Disaster Recovery 101 Presentation Transcript

    • 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:
      • Replication
      • Asynchronous Mirroring
      • Log Shipping
      • SAN Replication
      • Virtualization Replication
      • Clustering
      • Synchronous Mirroring
      • Replication
      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/
    • 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:
      • Replication
      • Asynchronous Mirroring
      • Log Shipping
      • SAN Replication
      • Virtualization Replication
      • Clustering
      • Synchronous Mirroring
      • Replication
      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/
    • 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
    • Lessons Learned
      Test your backups
      Retain your backups
      Know business value of backups
    • Log Shipping Lesson Learned
      Production
      SQL Server
      High Availability
      SQL Server
      Log Shipping
      SAN #1
      SAN #2
      Production SQL Arrays
      HASQL Arrays
    • Surprise!
      Production
      SQL Server
      High Availability
      SQL Server
      File Server
      Log Shipping
      Log Shipping
      SAN #1
      SAN #2
      Production SQL Arrays
      HASQL Arrays
      File Server Arrays
    • Brent’s Role Swap of Doom
      Disaster Recovery
      Datacenter
      Production
      Datacenter
      100MB connection
      Data synced to DR
    • Brent’s Role Swap of Doom
      Disaster Recovery
      Datacenter
      Production
      Datacenter
      100MB connection
      Data synced back to production
    • Brent’s Role Swap of Doom
      Disaster Recovery
      Datacenter
      Production
      Datacenter
      100MB connection
      Data synced back to production
      PLUS
      Users running applications that query the database in DR
      1gb Ethernet
    • Brent’s Role Swap of Doom
      Disaster Recovery
      Datacenter
      Production
      Datacenter
      100MB connection
      Tape Jukeboxes w/10 Drives
      Tape Jukeboxes w/6 Drives
    • Building a Bug-Out Bag
      Photo Licensed with Creative Commons from http://www.flickr.com/photos/78256324@N00/394214262/
    • Photo Licensed with Creative Commons from http://www.flickr.com/photos/moflytier/45842386/
    • Personal Contents
      Power inverter
      Gadget chargers
      Clothes & toiletries
      Water & food
      Insurance papers
      Road atlas
      Flashlight
      Pillow
    • Work Contents
      Software installs
      License keys
      Cell data cardor Verizon MiFi
      Contact list(updated annually)
    • Contact Lists
      Family
      Coworkers
      Managers
      Alternate Offices
      HW Vendors
      SW Vendors
      ISP/Colo
      Photo Licensed with Creative Commons from http://www.flickr.com/photos/toastforbrekkie/1237898664/
    • Lessons Learned
      Trust, but verify
      Test, test, test
      Whiteboard your environment
      Look for single points of failure
      Get a bug-out bag
    • Resources
      • Visit our SQL Server technical resource blog at: www.sqlserverpedia.com - feel free to send your SQL Server related technical questions to:ask@sqlserverpedia.com
      • Visit our dedicated SQL Server community site at: http://sqlserver.quest.com
      • Check out our “Backstage” area with all of our collateral and upcoming events including our ‘Pain of the Week’ webcasts:
      • www.quest.com/backstage
      • www.quest.com/backstage/pow.aspx