Cosi   V Mware
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Cosi V Mware

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VMware presentation given at the CODI 2009 Conference

VMware presentation given at the CODI 2009 Conference

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    Cosi   V Mware Cosi V Mware Presentation Transcript

    • 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 – 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
    • Background • Horizon 7.3.4 (UK) • Sun Fire V240 • Solaris 8 • Sybase database held on Storage Area Network (SAN)
    • 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! – IT Policy now mandates that (unless there is a strong technical reason) all new and replacement servers should be virtual
    • 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
    • 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 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!!!
    • 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
    • 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/