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vSphere High Performance Cookbook by Prasenjit Sarkar

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Using DRS algorithm guidelines

The Distributed Resources Scheduler (DRS) aligns resource usage with business priority by automatically load balancing across hosts. It continuously monitors utilization across vSphere ESXi servers and intelligently allocates available resources among virtual machines according to business needs.

It aggregates vSphere ESXi host resources into clusters and automatically distributes these resources to virtual machines by monitoring utilization and continuously optimizing virtual machine distribution across vSphere ESXi hosts. DRS operates on a continuous 60 minute cycle in a default configuration.

It also continuously balances computing capacity in resource pools to deliver a level of performance, scalability, and availability ...

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