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VMware vRealize Operations Performance and Capacity Management by Iwan 'e1' Rahabok

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Chapter 7. Storage Counters

We will complete our exploration of counters by covering the storage counters in this chapter. We will take the same approach we did with CPU, RAM, and network. We will cover the following topics in this chapter:

  • The layers in the storage subsystem
  • VM storage counters
  • ESXi storage counters
  • Cluster storage counters
  • Datastore storage counters
  • Storage counters at high-level objects, such as data center, vCenter, and World

The multilayer storage

Virtualization increases the complexity in troubleshooting storage performance. Just like memory, where we have more than one level, we have three levels for storage. At the highest level we have VMs. A VM typically has two to three virtual disks (or RDMs), such as OS drive, paging file ...

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