Virtual Horizons


Dave Pattern, Library Systems Manager
      University of Huddersfield
       d.c.pattern@hud.ac.uk
Preamble
• Presentation available at:
  – www.slideshare.net/daveyp/
• Please remix and reuse this presentation
  – creati...
Background
•   Horizon 7.3.4 (UK)
•   Sun Fire V240
•   Solaris 8
•   Sybase database held on Storage Area
    Network (SA...
Jan 2009
• Planned Easter upgrade to SAN would end
  support for Solaris 8 connectivity




           
Plan #1
•   Prep replacement server with Solaris 10
•   Install Horizon
•   Copy database(?)
•   Ooops… epic fail!
    – I...
Plan #2
•   Prep new virtual server with Solaris 10
•   Install Horizon
•   Copy database(?)
•   Ooops… epic fail!
    – C...
Plan #3
• Prep new virtual server with Windows
  Server 2003
• Install Horizon
• Migrate database
What went right?
• Downtime during data migration was low
• Faster server and increased redundancy




              
What went wrong?
• At 4am prompt on the following Saturday
  morning, Horizon fell over dead




              
What went wrong?
• The only scheduled task at 4am was for
  “upstat” (update statistics)
• Disabled “upstat” scheduled tas...
So, what really happened?
• VMware server configured to take daily
  “snapshot” at 4am
• Reconfigured “snapshot” to exclud...
What else has gone wrong?
• Nothing! Niente! Gdzie tam!   пусте!




              
What next?
• The HIP server will need replacing soon,
  so we’d like to virtualise that too
Any questions?




www.slideshare.net/daveyp/
 www.daveyp.com/blog/
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Cosi V Mware

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VMware presentation given at the CODI 2009 Conference

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Cosi V Mware

  1. 1. Virtual Horizons Dave Pattern, Library Systems Manager University of Huddersfield d.c.pattern@hud.ac.uk
  2. 2. Preamble • Presentation available at: – www.slideshare.net/daveyp/ • Please remix and reuse this presentation – creativecommons.org/licenses/by-nc-sa/3.0 • Have you remembered to switch your phone on? – please feel free take photos, record audio, blog, tweet (@daveyp), etc
  3. 3. Background • Horizon 7.3.4 (UK) • Sun Fire V240 • Solaris 8 • Sybase database held on Storage Area Network (SAN)
  4. 4. Jan 2009 • Planned Easter upgrade to SAN would end support for Solaris 8 connectivity 
  5. 5. Plan #1 • Prep replacement server with Solaris 10 • Install Horizon • Copy database(?) • Ooops… epic fail! – IT Policy now mandates that (unless there is a strong technical reason) all new and replacement servers should be virtual
  6. 6. Plan #2 • Prep new virtual server with Solaris 10 • Install Horizon • Copy database(?) • Ooops… epic fail! – Current VMware setup only supports x86 version of Solaris – Sybase not available for x86 Solaris platform
  7. 7. Plan #3 • Prep new virtual server with Windows Server 2003 • Install Horizon • Migrate database
  8. 8. What went right? • Downtime during data migration was low • Faster server and increased redundancy 
  9. 9. What went wrong? • At 4am prompt on the following Saturday morning, Horizon fell over dead 
  10. 10. What went wrong? • The only scheduled task at 4am was for “upstat” (update statistics) • Disabled “upstat” scheduled task whilst SirsiDynix Support investigated • A few days later, Horizon died a death at 4am again… • …maybe going virtual wasn’t such a good idea, after all!!!
  11. 11. So, what really happened? • VMware server configured to take daily “snapshot” at 4am • Reconfigured “snapshot” to exclude Sybase data partition • Touch wood, it hasn’t happened again
  12. 12. What else has gone wrong? • Nothing! Niente! Gdzie tam! пусте! 
  13. 13. What next? • The HIP server will need replacing soon, so we’d like to virtualise that too
  14. 14. Any questions? www.slideshare.net/daveyp/ www.daveyp.com/blog/

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