ST230c-EN: Performance Administration on ONTAP

Agenda:

• Structure of a NetApp™ cluster
  • Layers of the operating system
  • Data flow in the cluster
  • Troubleshooting configuration errors (hardware and software)
    
    
• Presentation of the challenges
  • Physical limits and additional effort for error prevention and correction: run and response times, fragmentation, misalignment, small IOs, reconstructs, silent data corruption
  • Fairness brakes in the NAS and SAN protocols and the ONTAP management layers: TCP windowsize, buffer credits, quality of service, CMD queue limits
  • How can we recognise them?
  • How big are their impacts?
    
    
• Presentation of countermeasures by NetApp™
  • Lost write protection, DIF/DIX=PI, WAFL Write Optimation, RAID-DP/TEC, Free Space Reallocate, Read Reallocate, Read Ahead, Dedupe, Compression, Compaction, VAAI, ODX, Thin Provisioning, Quality of Service, Volume Move, FlexGroups, InodePath
    
    
• The mathematical foundations
  • Queuing theory and its concrete application in storage and network performance analysis
  • Recognising open and closed load / single threaded and parallel workloads
  • Criteria for identifying and differentiating between bullies and victims
    
    
• Presentation of the commands for identifying the
  • highest latencies
  • highest IO loads
  • highest data throughputs
  • largest queues
    
    
• Performance-Tuning
  • HDD + PAM = Flash Cache
  • HDD + SSD = Flash Pool (Hybrid Aggregate)
  • All Flash FAS (AFF)
  • FlexGroup
  • Optimizations: Which ones are compatible? Which ones cancel each other out?
    
    
• Sizing
  • Adequate consideration of client IO workloads
  • Estimation of the additional housekeeping and metadata IOs
  • Size of the metadata and the working set
    
    
• Overview of other external monitoring tools
  • System Manager
  • Active IQ Unified Manager
  • Harvest, Graphite, Grafana, NABox
    
    
• All topics of the official NetApp™ training “ONTAP Performance Administration” are covered and deepened:
  • Describe how to use NetApp™ tools for performance measurement
  • Explain the benefits of using Active IQ for performance analysis
  • Use Active IQ Unified Manager to monitor the performance of cluster objects
  • Describe the layers of ONTAP software architecture
  • Diagram the flow of read and write requests through the ONTAP network and protocol layers
  • Use performance analysis tools to identify WAFL-related performance bottlenecks
  • Discuss how storage quality of service (QoS) operates in an ONTAP environment
  • Explain how to monitor and manage workload performance
  • Use performance analysis tools to identify NAS performance bottlenecks
  • Identify the actions that you can take to resolve SAN performance issues
    
    

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