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Phoenix VMUG Gotchas Session Advanced

Phoenix VMUG Gotchas Session Advanced. 12/10/09. Gotchas Session Advanced. SRM site recovery manager: Single subnet across both sites Managing changes on both app and infrastructure Templates to enable change control Dealing with app-level licensing as VMs proliferate

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Phoenix VMUG Gotchas Session Advanced

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  1. Phoenix VMUGGotchas Session Advanced 12/10/09

  2. Gotchas Session Advanced • SRM site recovery manager: • Single subnet across both sites • Managing changes on both app and infrastructure • Templates to enable change control • Dealing with app-level licensing as VMs proliferate • Spiceworks (?), Altiris (and other standard provisioning and license control, like LanDesk) • Or, go with some sort of “thin app provisioning tools” like AppStream (Symantec) or similar tools • Watch thin provisioning storage – DON’T RUN OUT!! (BSOD) • Thin provisioning gotcha when moving/copying VMs – you can end up with full provisioning. • Use “thin-aware” tools for copying

  3. Gotchas Session Advanced • Using diskpart (Windows) to expand volumes… any issues with VM use? • ?? Any issue with shrinking VMFS to sm • Use the VMware Converter to resize VMs smaller or larger • Using NFS storage – “thin” by default. Are there issues using SQL or Exchange in this scenario? • Command line VM creation has an option to force a thick provisioned VM to get around this issue. Google for a white paper on this. • Vmotion issues around moving between processor families or vendors? Compatibility charts, supportability? • Insoluble problem in certain cases, your mileage will vary… • If disk setting is “independent”, Vmotion will fail, but not say why…

  4. Gotchas Session Advanced • DNS resolution issues (ESXi) • possibly due to case sensitivity with hostnames • Common solution seems to be use local hosts file for static resolution • MSCS with one physical and one virtual? • It works, be careful with certificates with RPC/security and wildcards • Fault Tolerance issues – clearly early feature, don’t use for serious production yet… lots of limitations (single CPU, etc) • Network Neighborhood browsing disabled by default on Win Server 2008 and 2003 • ESX hosts just disappearing from Virtual Center – possibly needs manual intervention to restore control. • This seems to happen a lot – often they will just come back on their own • DMZ and advanced settings for networking can cause this (?) • “Unable to apply DRS settings” message: make just one service console network adapter active, not both/multiple

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