CIM2921 VMware vCenter Operations: Best Practices for Managing Virtual Capacity

Summary at the top =

  • 3 Pillars of vCenter Operations
    • Patented Performance Analytics
    • Purpose Built Capacity Planning and Analysis
    • Automated Configuration and Compliance
      • Automated Patching and Provisioning
      • Comprehensive Change Tracking to isolate root cause
  • Why is capacity management challenging in a virtual environment?
    • So many layers to optimize…
    • CPU (vSMP, Shares, Reservations, Limits)
    • Memory (Transparent Page Sharing, Memory Ballooning, Memory Compression)
    • Storage (Thin Provisioning, Linked Clones)
    • Clusters (DRS, HA, FT, vMotion , Storage vMotion)
    • Workload Flux
  • vSphere Admin is focused on the short-term and real-time needs.
    • Wen will I run out of capacity?
    • What resource if my capacity bottleneck?
    • What VMs should be right-sized?
  • IT Manager Director is more focused on the long-term.
    • How many more VMs will fit in my current VM?
    • What if I add, remove, reconfigure capacity?
    • Can I defer infrastructure investments?
  • Standard vs. Advanced
    • Standard = Capacity Dashboard, Time remaining for physical resources, Short-term capacity shortfalls in terms of physical resources, Troubleshooting Capacity
    • Advanced = VC Ops Standard + CapacityIQ. Additional capabilities are…
      • More dashboards – customizable
      • Time and Capacity Remaining for physical and virtual resources
      • Capacity Optimization
      • Capacity Modeling (“What If” Analysis)
      • Advanced is current a ‘soft’ bundle — two separate installs….changing in next release.
  • Standard Feature breakdown
    • Measure CPU, Storage I/O, Network I/O, Memory
    • Rest of the session is now focused on Advanced
  • Two scenarios — 1) Troubleshooting & Optimizing Capacity, 2) Capacity Planning for business growth.
    • Scenario 1
      • How to identify capacity problems
      • How to root cause a capacity problem
      • How to optimize resources and resolve capacity issue
    • Scenario 2
      • Modeling/”What-if” analysis for new projects and hardware purchases.
  • Using CapacityIQ
    • Start at the dashboard — will show the days to shortfall/running out of capacity for any given category.
    • Capacity Views gives the detailed analysis.
    • Global Settings — lots of tweaks.
    • To find the capacity bottleneck, head to Virtual Machine capacity Summary View.
    • Trend Views — nice charts showing where growing usage crosses capacity.
    • Can defined hard reserved capacity and/or buffers.
    • Can exclude Powered Off VMs and adjust based on % of time powered off.
  • Long screenshot walkthrough — not as many notes here..mainly config screens and sample scenarios.

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